Maca Root vs Tongkat Ali For Testosterone: Which Is Better? [Complete Comparison Guide]

Introduction

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Maca root and tongkat ali are two of the most popular natural supplements marketed for testosterone support, but there is one critical distinction most comparison articles fail to make clearly: tongkat ali has clinical evidence for actually raising serum testosterone levels, while maca root does not increase testosterone in most human studies. That does not make maca useless. Far from it. But understanding this difference is the foundation for choosing the right supplement for your specific goals.

Both supplements have legitimate research behind them. Tongkat ali (Eurycoma longifolia), a Malaysian rainforest tree root, has been shown in a 2022 meta-analysis of clinical trials to significantly improve total testosterone in men. Maca root (Lepidium meyenii), a Peruvian cruciferous vegetable grown at high altitude, consistently improves libido, sexual function, energy, and fertility markers in clinical trials, but through mechanisms that are independent of testosterone elevation.

This guide breaks down every relevant study, explains the mechanisms behind each supplement, covers dosing protocols, side effects, drug interactions, and cost, and gives you a clear framework for deciding which one, or whether both, belong in your regimen. Whether you are a man over 40 dealing with declining testosterone, an athlete looking for a performance edge, or someone simply wanting to improve libido and energy, the answer depends entirely on what your body actually needs.

Watch Our Video Review

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What Is Maca Root?

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Origins and Traditional Use

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Maca (Lepidium meyenii, also classified as Lepidium peruvianum) is a cruciferous root vegetable native to the high Andes of Peru, growing at elevations between 3,800 and 4,500 meters. It has been cultivated and consumed as both a food and medicinal plant for at least 2,000 years. The Inca warriors reportedly consumed maca before battle for strength and endurance, and it has been a dietary staple in Peruvian highland communities where it is eaten boiled, roasted, or dried and ground into flour.

The root comes in several colors, each with slightly different bioactive profiles:

• Yellow maca accounts for roughly 60% of the Peruvian harvest and carries the bulk of human clinical research on libido and menopausal symptoms
• Red maca (about 25% of harvest) is particularly rich in phytochemicals and is associated with prostate health support and energy enhancement in animal studies
• Black maca is the rarest variety and shows the strongest effects on sperm production and cognitive function in preclinical research

Bioactive Compounds

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The unique compounds in maca that drive its biological effects include:

• Macamides: A unique class of non-polar, long-chain fatty acid N-benzylamides found exclusively in maca. These are the primary bioactive markers linked to fertility, neuroprotection, and anti-fatigue effects
• Macaenes: Unsaturated fatty acids that work alongside macamides to influence reproductive tract function
• Glucosinolates: Sulfur-containing compounds (also found in broccoli and other cruciferous vegetables) that support detoxification pathways
• Alkaloids: Including macaridine and lepidiline A and B, which may influence endocrine function
• Sterols: Beta-sitosterol, campesterol, and stigmasterol, which can modulate hormone receptor activity

Maca is also nutrient-dense. A 100-gram serving of dried maca root provides significant amounts of iron, copper, manganese, potassium, vitamin C, and B vitamins, along with approximately 10-14% protein with all essential amino acids.

Mechanism of Action: Why Maca Does NOT Directly Raise Testosterone

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This is the most important thing to understand about maca: multiple well-designed clinical trials have consistently found that maca does not significantly alter serum levels of testosterone, estradiol, LH (luteinizing hormone), or FSH (follicle-stimulating hormone).

A landmark 2002 study by Gonzales et al. published in Andrologia (PMID: 12472620) followed 56 healthy men taking 1,500 mg or 3,000 mg of maca daily for 12 weeks. Sexual desire improved significantly beginning at 8 weeks, but serum testosterone and estradiol levels were completely unchanged at all time points. Multiple regression analysis confirmed that maca treatment had no effect on reproductive hormone levels.

A follow-up study by the same group (PMID: 12525260) examined maca’s effect on serum reproductive hormones in adult healthy men over 12 weeks. Again, LH, FSH, prolactin, testosterone, and estradiol showed no statistically significant changes compared to placebo, despite improvements in subjective well-being and sexual function.

A 2021 systematic review examining the effects of herbs on testosterone concentrations in men (PMID: 34020699) evaluated three randomized controlled trials with a total of 126 male participants taking maca. None of the three trials found statistically significant increases in testosterone after 12 weeks of supplementation.

So how does maca improve libido and sexual function without changing hormones? The current scientific understanding points to several non-hormonal pathways:

1. Macamide activity on the endocannabinoid system: Macamides interact with fatty acid amide hydrolase (FAAH) and may modulate endocannabinoid signaling, which influences mood, stress response, and sexual arousal
2. Antioxidant protection of reproductive tissue: Maca regulates the balance between oxidant and antioxidant status in the testes, protecting sperm cells from oxidative damage
3. Neurotransmitter modulation: Some evidence suggests maca influences serotonin and dopamine pathways, which could explain its effects on mood, energy, and libido
4. Nutrient density: The rich mineral and amino acid profile supports overall endocrine system function without directly altering specific hormone levels

Clinical Evidence for Maca

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Libido and Sexual Function:

• Gonzales et al. (2002, PMID: 12472620): Significant improvement in sexual desire at 8 weeks with both 1,500 mg and 3,000 mg daily, independent of testosterone changes
• A double-blind pilot study on SSRI-induced sexual dysfunction (PMID: 30803024) found that maca root at 3,000 mg daily significantly improved sexual function in patients experiencing antidepressant-related sexual side effects

Fertility and Sperm Quality:

• Gonzales et al. (2001, PMID: 11753476): Maca treatment (1,500-3,000 mg daily) for 4 months increased seminal volume, sperm count per ejaculum, motile sperm count, and sperm motility
• A 2016 systematic review of maca and semen quality confirmed improvements in sperm concentration and motility, though the authors called for larger trials
• A 2021 randomized, double-blind, placebo-controlled trial (PMID: 33749918) found that maca improved sperm parameters in infertile men

Late-Onset Hypogonadism Symptoms:

• A 2023 randomized, double-blind, placebo-controlled trial (PMID: 37420743) found that maca significantly improved Aging Males’ Symptoms (AMS) scores, erectile function (IIEF scores), and urinary symptoms (IPSS scores) compared to placebo in men with late-onset hypogonadism symptoms. Notably, these improvements occurred without significant changes in serum testosterone.

Energy and Mood:

• A 2016 study of 175 participants showed that 3 grams of red or black maca daily for 12 weeks improved mood and energy scores compared to placebo, regardless of altitude

Menopause:

• Small randomized trials suggest maca may help with hot flashes, mood disturbances, and sleep quality in menopausal women, making it one of the few supplements in this comparison useful for both sexes

What Is Tongkat Ali?

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Origins and Traditional Use

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Tongkat ali (Eurycoma longifolia Jack), also known as longjack, Malaysian ginseng, or pasak bumi, is a flowering plant in the Simaroubaceae family native to the rainforests of Malaysia, Indonesia, Thailand, and Vietnam. The root has been used in traditional Southeast Asian medicine for centuries as a treatment for fever, malaria, erectile dysfunction, and male infertility. In Malaysian folk medicine, tongkat ali root is typically boiled into a bitter tea or decoction.

Unlike maca, which is a cultivated food crop, tongkat ali is a slow-growing rainforest tree that takes 10-15 years to mature. This makes sustainable sourcing a real consideration when choosing products. The root is the primary medicinal part, and it is extremely bitter, which is actually a marker of the active quassinoid content.

Bioactive Compounds

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The pharmacologically active compounds in tongkat ali include:

• Eurycomanone: The highest-concentration quassinoid in the root extract and the primary driver of testosterone-related effects. It inhibits aromatase (the enzyme that converts testosterone to estrogen) and may also inhibit phosphodiesterase activity
• Eurypeptides: Bioactive peptides that may influence the hypothalamic-pituitary-gonadal (HPG) axis
• Glycosaponins: Support testosterone production through pituitary and adrenal gland stimulation
• Alkaloids: Including beta-carboline alkaloids with potential anti-parasitic and anxiolytic properties

• Squalene and tirucallane-type triterpenes: Additional bioactive compounds with anti-inflammatory properties

Mechanism of Action: How Tongkat Ali Actually Raises Testosterone

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Unlike maca, tongkat ali has multiple identified mechanisms that directly influence testosterone production and bioavailability:

1. Aromatase inhibition: Eurycomanone inhibits the aromatase enzyme (CYP19), which converts testosterone to estrogen. By blocking this conversion, more testosterone remains in circulation. This is the same mechanism used by pharmaceutical aromatase inhibitors like anastrozole, though tongkat ali’s effect is milder (PMID: 23810842)

2. SHBG reduction: Tongkat ali appears to reduce Sex Hormone-Binding Globulin (SHBG), the protein that binds to testosterone and makes it unavailable for use. By lowering SHBG, more testosterone is freed into its biologically active form (free testosterone). This is significant because a man can have “normal” total testosterone but low free testosterone if his SHBG is elevated

3. Leydig cell stimulation: Eurycomanone enhances testosterone steroidogenesis directly at the testicular Leydig cells, the cells responsible for producing testosterone

4. HPG axis modulation: The eurypeptides and glycosaponins in tongkat ali appear to influence the hypothalamic-pituitary-gonadal axis, the hormonal feedback loop that regulates testosterone production

5. Cortisol reduction: Tongkat ali has demonstrated significant cortisol-lowering effects. Since cortisol and testosterone have an inverse relationship (high cortisol suppresses testosterone production), reducing cortisol creates a hormonal environment more favorable for testosterone synthesis

Clinical Evidence for Tongkat Ali

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Testosterone Elevation (Meta-Analysis):

• A 2022 systematic review and meta-analysis (PMID: 36013514) evaluated nine studies and performed a meta-analysis on five randomized controlled trials. The results showed a significant improvement in total testosterone levels after tongkat ali treatment in both healthy volunteers and men with hypogonadism. This is the strongest level of evidence available for any herbal testosterone supplement.

Testosterone in Aging Males:

• A 6-month, double-blind, placebo-controlled, randomized trial (PMID: 33541567) found that 200 mg of tongkat ali daily combined with concurrent training improved erectile function and increased total testosterone levels in nearly 50% of study participants with androgen deficiency of aging males (ADAM)

Testosterone and Body Composition in Seniors:

• A pilot study with physically active seniors aged 57-72 (PMID: 23754792) using 400 mg daily for 5 weeks found significant increases in total and free testosterone concentrations and muscular force:
  • Men: 15.1% increase in total testosterone, 61.1% increase in free testosterone, 16.6% increase in muscular force
  • Women: 48.6% increase in total testosterone, 122% increase in free testosterone, 13.7% increase in muscular force

Cortisol and Stress:

• Talbott et al. (2013, PMID: 23705671) gave 200 mg of tongkat ali daily to 63 moderately stressed adults for 4 weeks. Results showed:
  • 16% reduction in salivary cortisol compared to placebo
  • 37% increase in salivary testosterone compared to placebo
  • 36% improvement in the cortisol-to-testosterone ratio
  • Significant improvements in tension (-11%), anger (-12%), and confusion (-15%) on the Profile of Mood States questionnaire

Sexual Function:

• The Physta standardized extract (200 mg daily) has shown improvements in erectile function scores and sexual satisfaction in multiple trials spanning 4 weeks to 6 months

Fertility:

• Tongkat ali has been shown to increase spermatogenesis through eurycomanone’s inhibition of aromatase and phosphodiesterase in steroidogenesis pathways

Clues Your Body Tells You: Signs of Low Testosterone

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Before deciding between maca and tongkat ali, it helps to recognize whether low testosterone might actually be driving your symptoms. Here are the signals your body sends:

Physical Signs

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• Morning erections disappearing or becoming less frequent — this is one of the earliest and most reliable indicators of declining testosterone
• Unexplained fat gain around the midsection — testosterone plays a critical role in fat distribution, and low levels shift storage toward visceral belly fat
• Muscle loss despite maintaining your training — you may notice your arms and chest looking flatter even though your workouts have not changed
• Decreased grip strength — a subtle sign most people miss, but one that correlates strongly with testosterone levels in research
• Persistent fatigue that sleep does not fix — you sleep 7-8 hours and still wake up feeling drained
• Thinning body hair or slower beard growth — testosterone maintains hair follicle activity in androgen-dependent areas

Mental and Emotional Signs

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• Brain fog and difficulty concentrating — testosterone supports cognitive function, and declining levels often show up as mental sluggishness
• Irritability without clear cause — low testosterone can create a persistent low-grade irritability that is different from normal stress responses
• Loss of motivation or drive — tasks that used to excite you feel like chores, and your competitive edge has dulled
• Decreased confidence — subtle but real, often described as “not feeling like yourself”
• Depressive mood — not necessarily clinical depression, but a persistent flatness or lack of enthusiasm

Sexual Signs

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• Low libido — reduced interest in sex that does not match your relationship satisfaction or stress level
• Erectile difficulty — particularly trouble maintaining erections rather than just achieving them
• Reduced ejaculate volume — noticeable decrease in semen quantity
• Longer recovery between sexual encounters — refractory periods extending significantly

When to Get Tested

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If you are experiencing three or more of these signs, especially if you are over 35, get your testosterone levels checked. Request a comprehensive panel that includes:

• Total testosterone
• Free testosterone
• SHBG (Sex Hormone-Binding Globulin)
• Estradiol (E2)
• LH (Luteinizing Hormone)
• FSH (Follicle-Stimulating Hormone)
• Cortisol (morning draw)
• Thyroid panel (TSH, free T3, free T4)

Important: Get blood drawn between 7-10 AM when testosterone peaks. A single low reading should be confirmed with a second test. Normal total testosterone ranges from roughly 300-1,000 ng/dL, but symptoms can appear even within the “normal” range if free testosterone is low due to elevated SHBG.

Head-to-Head Comparison

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Quick Reference Table

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Detailed Comparison by Goal

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For Raising Testosterone Levels on a Blood Test

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Winner: Tongkat Ali

This is not close. Tongkat ali has a meta-analysis showing significant testosterone elevation. Maca has three RCTs with 126 participants showing zero change in serum testosterone. If your goal is to see higher numbers on your next lab panel, tongkat ali is the only rational choice between these two.

The magnitude of tongkat ali’s testosterone effect varies by study and population:

• Moderately stressed adults: +37% salivary testosterone over 4 weeks (200 mg daily)
• Active seniors: +15.1% total testosterone, +61.1% free testosterone over 5 weeks (400 mg daily)
• Men with ADAM: testosterone increased in nearly 50% of participants over 6 months (200 mg daily)

For Improving Libido

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Winner: Tie (different mechanisms)

Both supplements have legitimate evidence for improving libido, but they work through entirely different pathways. Maca improves libido through non-hormonal mechanisms (likely endocannabinoid system modulation and neurotransmitter effects), while tongkat ali improves libido at least partly through testosterone elevation and cortisol reduction.

In practice, this means:

• Choose maca if your libido is low but your testosterone is normal, if you are a woman, or if you cannot take a testosterone-altering supplement due to medication interactions
• Choose tongkat ali if your libido is low AND your testosterone is also low or borderline
• Consider combining both if you want to address libido through multiple pathways simultaneously

For Improving Fertility (Male)

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Winner: Maca (slight edge for sperm quality); Tongkat Ali (for hormonal fertility)

Maca has more extensive evidence for improving sperm parameters directly. The Gonzales studies showed increases in sperm count, sperm volume, and motility without altering hormones. Black maca specifically showed the strongest effects on daily sperm production in preclinical studies.

Tongkat ali improves fertility primarily through its testosterone and hormonal effects, with eurycomanone increasing spermatogenesis through the HPG axis.

For comprehensive male fertility support, combining both supplements makes scientific sense: maca for direct sperm quality improvement and tongkat ali for the hormonal optimization that supports overall reproductive function.

For Energy and Fatigue

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Winner: Tongkat Ali (slight edge)

Tongkat ali’s cortisol-lowering effect gives it an edge here. Chronic elevated cortisol is one of the primary drivers of persistent fatigue, and the 16% reduction seen in clinical trials translates to meaningful improvements in daily energy. The testosterone elevation also contributes to energy, motivation, and physical vitality.

Maca also has evidence for energy improvement. The 2016 study with 175 participants showed improved energy scores with 3 grams daily, and traditional Andean use centers heavily on endurance and vitality. However, the mechanism is less specific and the effects are generally more subtle.

For Mood and Stress

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Winner: Tongkat Ali

The Talbott et al. (2013) study showed significant improvements in tension, anger, and confusion scores alongside cortisol reduction. This makes physiological sense: cortisol is the primary stress hormone, and reducing it while increasing testosterone creates a neurochemical environment that favors confidence, calmness, and emotional resilience.

Maca has some evidence for mood improvement, particularly the 2016 altitude study, and it has traditional use for mood support. However, tongkat ali’s evidence is more robust and the mechanism (cortisol reduction) is more clearly established.

For Women

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Winner: Maca

Maca is the clear choice for women. It has research specifically in female populations (menopause symptoms, libido, mood) and does not alter testosterone levels, which is typically the desired outcome for women. Maca’s non-hormonal mechanism of action means it can support libido and energy without the masculinizing effects that come with testosterone elevation.

Tongkat ali did show impressive free testosterone increases in women in the pilot study with seniors (+122%), but this is based on very limited research, and most women do not want their testosterone increased to that degree. Women on hormone therapies, birth control, or with hormone-sensitive conditions should approach tongkat ali with particular caution.

Clues Your Body Tells You: Signs These Supplements Are Working

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If You Started Taking Tongkat Ali

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Week 1-2:

• Improved sleep quality (counterintuitive, given the insomnia risk, but cortisol reduction often improves sleep in stressed individuals)
• Slightly improved mood, less irritability
• Subtle increase in mental clarity and motivation

Week 2-4:

• Noticeable improvement in morning energy levels
• Increased sexual interest and more frequent morning erections
• Workouts feel slightly more productive; better mind-muscle connection
• Mood stabilization; you feel more even-keeled

Month 1-2:

• Measurable increases in testosterone on blood work (if you retest)
• Visible body composition changes if combined with resistance training (slightly leaner, slightly more muscular)
• Improved stress resilience; situations that previously agitated you feel more manageable
• Stronger erections and improved sexual performance
• Possible increase in body hair growth rate

Month 3-6:

• Full testosterone optimization effects established
• Noticeable improvements in body composition
• Sustained energy throughout the day without afternoon crashes
• Improved confidence and assertiveness (often reported but difficult to measure)
• Fertility markers improved if trying to conceive

If You Started Taking Maca

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Week 1-2:

• Mild energy increase, particularly in the morning
• Slight improvement in mood and well-being
• Some people notice improved digestion (maca is fiber-rich)

Week 4-6:

• Gradual increase in libido (the Gonzales study showed libido effects beginning around week 8, but some individuals respond sooner)
• Improved stamina during exercise
• Better overall sense of vitality and well-being

Week 8-12:

• Clear improvement in sexual desire and arousal
• Sustained energy improvements
• If trying to conceive: improvements in sperm parameters typically take 3-4 months (a full spermatogenesis cycle is approximately 74 days)
• Women may notice reduced menopause symptoms (hot flashes, mood)
• Improved exercise recovery

Warning Signs to Watch For

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Stop tongkat ali and consult a doctor if you experience:

• Persistent insomnia that does not resolve after reducing dose
• Significant irritability or aggression
• Yellowing of skin or eyes (jaundice, suggesting liver stress)
• Heart palpitations or rapid heartbeat
• Acne outbreak significantly worse than baseline (could indicate excessive testosterone conversion to DHT)

Stop maca and consult a doctor if you experience:

• Significant digestive upset (cramping, bloating, diarrhea)
• Thyroid symptoms worsening (maca contains goitrogens that can affect thyroid function)
• Hormonal acne or menstrual irregularities in women
• Headaches or insomnia (less common but reported)

Key Differences in Mechanism: Why This Distinction Matters

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Understanding that maca and tongkat ali work through fundamentally different mechanisms is not just academic. It has real-world implications for who should take which supplement:

Maca Works Through Non-Hormonal Pathways

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Maca’s bioactive macamides and macaenes appear to influence:

• The endocannabinoid system
• Antioxidant status in reproductive tissue
• Neurotransmitter balance (serotonin, dopamine)
• Overall nutritional status supporting endocrine function

This means maca is safe for people who need to avoid hormonal changes, including:

• Women (no testosterone increase means no virilization risk)
• Men on testosterone monitoring (maca will not confound blood test results)
• People with hormone-sensitive conditions (certain cancers, endometriosis)
• People taking SSRIs (maca may actually help with SSRI-induced sexual dysfunction)

Tongkat Ali Works Through Direct Hormonal Mechanisms

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Tongkat ali’s eurycomanone and other quassinoids directly alter:

• Testosterone production (Leydig cell stimulation)
• Testosterone bioavailability (SHBG reduction)
• Testosterone preservation (aromatase inhibition)
• Cortisol levels (HPA axis modulation)

This means tongkat ali has more therapeutic potential but also more interaction risk, including:

• Potential interactions with blood sugar medications (metformin, glipizide)
• Potential interactions with immunosuppressants
• Potential interactions with propranolol and other beta-blockers
• Not recommended for people with liver or kidney disease without medical supervision
• May need cycling (4-8 weeks on, 1-2 weeks off) to prevent receptor desensitization

Dosing Protocols

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Maca Root Dosing

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Standard Protocol:

• Starting dose: 1,500 mg daily (split into two 750 mg doses or taken as a single dose)
• Effective dose range: 1,500-3,000 mg daily (based on clinical trial dosing)
• Optimal form: Gelatinized maca powder or capsules (gelatinization removes starch, improving digestibility and concentrating bioactives)
• Timing: Morning and/or early afternoon with food (maca can be mildly stimulating)
• Cycling: Not strictly necessary due to non-hormonal mechanism, but some practitioners recommend 5 days on, 2 days off or 3 months on, 1 month off

Form-Specific Dosing:

Color Selection:

• For libido and general wellness: Yellow maca (most studied)
• For energy and prostate support: Red maca
• For fertility and sperm quality: Black maca (strongest evidence for spermatogenesis)
• Multi-color blend: Covers all bases; some products use a proprietary blend of all three

Tongkat Ali Dosing

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Standard Protocol:

• Starting dose: 200 mg daily of standardized extract (typically 100:1 or 200:1 concentration)
• Effective dose range: 200-400 mg daily
• Optimal form: Standardized hot-water root extract with verified eurycomanone content (minimum 2% eurycomanone for a 100:1 extract)
• Timing: Morning on an empty stomach or with a light meal. Avoid evening dosing as it can cause insomnia
• Cycling: Recommended. Common protocols include 5 days on/2 days off, or 8 weeks on/2 weeks off

Extract Ratio Matters:

Important Notes on Tongkat Ali Quality:

• Look for products with third-party testing for heavy metals (lead, mercury, arsenic), as contamination is a known issue in some tongkat ali products
• The EFSA (European Food Safety Authority) flagged potential concerns at extremely high doses (2,000 mg/kg body weight), but standard supplemental doses are orders of magnitude below this
• Standardization to eurycomanone content (at least 1-2%) is the best quality indicator
• Malaysian-sourced tongkat ali is generally considered highest quality, with Physta being one of the most clinically studied branded extracts

Side Effects Comparison

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Maca Root Side Effects

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Maca has an exceptionally mild side effect profile, which makes sense given that it has been consumed as a food for millennia. Clinical trials using doses up to 3,000 mg daily for 12 weeks report:

Common (mild):

• Mild digestive upset (particularly with raw, non-gelatinized powder)
• Mild energy increase that can interfere with sleep if taken too late in the day
• Occasional headaches during the first week

Uncommon:

• Thyroid effects: maca contains glucosinolates (goitrogens) that may affect thyroid function. People with thyroid conditions, especially hypothyroidism, should monitor their thyroid levels when starting maca

• Hormonal acne in some women (rare, and typically dose-dependent)
• Menstrual changes in some women (usually transient)

Contraindications:

• Active thyroid conditions (without medical monitoring)
• Pregnancy (insufficient safety data)
• Hormone-sensitive conditions (out of abundance of caution, though maca does not alter hormone levels in studies)

Tongkat Ali Side Effects

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Tongkat ali is generally well-tolerated at standard doses (200-400 mg daily of standardized extract), but the side effect profile is more significant than maca’s:

Common:

• Insomnia and restlessness (the most frequently reported side effect, especially at higher doses or with evening dosing)
• Mild anxiety or jitteriness
• Increased body temperature or sweating
• Mild gastrointestinal discomfort

Uncommon but Notable:

• Irritability and aggression (likely related to testosterone elevation and individual sensitivity)
• Increased heart rate
• Acne (from increased testosterone and potential DHT conversion)

Rare but Serious:

• Liver injury: A case report (PMID: 38628657) documented a 47-year-old male bodybuilder who developed hepatocellular injury with jaundice after starting a tongkat ali-containing product. This is extremely rare and may have involved contaminated products or other supplements, but it warrants caution
• The LiverTox database at NCBI maintains a page on tongkat ali (NBK609015), indicating the hepatotoxicity risk is recognized though uncommon

Drug Interactions (Important): Tongkat ali has documented interactions with at least 26 medications, including:

• Diabetes medications (metformin, glipizide, miglitol): tongkat ali may lower blood sugar, creating additive hypoglycemia risk
• Immunosuppressants: tongkat ali may modulate immune function
• Propranolol and beta-blockers: potential for interaction
• Blood pressure medications: tongkat ali may have mild hypotensive effects
• Anticoagulants: theoretical interaction risk

Contraindications:

• Liver disease
• Kidney disease
• Hormone-sensitive cancers (prostate, breast)
• Pregnancy and breastfeeding
• Concurrent use of testosterone replacement therapy (without medical supervision)
• Upcoming surgery (stop at least 2 weeks before due to potential blood sugar and blood pressure effects)

Cost Comparison

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Value Analysis:

Maca is significantly cheaper, but cost-effectiveness depends on your goal. If your goal is libido and general energy, maca offers exceptional value at $0.15-$0.40 per day. If your goal is testosterone elevation, tongkat ali is the only option that delivers this, making its higher price justified by the unique benefit.

For budget-conscious supplementation, consider:

• Bulk gelatinized maca powder (most cost-effective form of maca)
• A reputable 100:1 tongkat ali extract from a company that provides third-party testing certificates (avoid the cheapest options, as contamination risk increases with low-quality sources)

Other Testosterone-Supporting Supplements Worth Considering

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While maca and tongkat ali get the most attention in testosterone discussions, several other supplements have clinical evidence worth mentioning:

Ashwagandha (KSM-66)

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Ashwagandha (Withania somnifera) is arguably the strongest evidence-based herbal testosterone booster alongside tongkat ali. The KSM-66 standardized extract has been studied extensively:

• A randomized controlled trial (PMID: 35873404) found that KSM-66 at 600 mg daily significantly increased serum testosterone and improved sexual performance in adult males
• One study showed total serum testosterone increased by approximately +96 ng/dL in the ashwagandha group versus +18 ng/dL in placebo
• KSM-66 supplementation increased testosterone by 17%, semen volume by 53%, sperm concentration by 167%, and sperm motility by 57% in one trial
• Ashwagandha also significantly lowers cortisol (similar to tongkat ali), which may partly explain its testosterone-boosting effect
• Typical dose: 300 mg KSM-66 twice daily (600 mg total)

For a deeper dive into stress-adapting herbs, see our guide on Ashwagandha vs Rhodiola Rosea for Stress.

Fenugreek

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Fenugreek (Trigonella foenum-graecum) seed extract, particularly the Testofen standardized extract, has shown testosterone-supporting effects in several trials. A systematic review confirmed positive effects on testosterone concentrations in men. The mechanism likely involves inhibition of aromatase and 5-alpha-reductase enzymes. Typical dose: 500-600 mg of standardized extract daily.

DHEA (Dehydroepiandrosterone)

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DHEA is a precursor hormone that the body converts into testosterone and estrogen. Unlike the herbs above, DHEA is an actual hormone, not a plant extract. Studies show it can increase testosterone in women and older men with low DHEA levels, but the effects in younger men with normal DHEA are minimal. It is also banned by most sports organizations. Typical dose: 25-50 mg daily (start low). DHEA supplementation requires medical supervision due to its hormonal nature.

D-Aspartic Acid (DAA)

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D-aspartic acid is an amino acid that plays a role in testosterone synthesis by stimulating the release of LH from the pituitary gland. Initial studies showed promise (a 42% increase in testosterone over 12 days), but longer-term studies have been less consistent, and some showed no benefit. It may be useful for short-term bursts (2-3 weeks) but is not well-supported for long-term use. Typical dose: 2,000-3,000 mg daily.

Zinc

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Zinc is essential for testosterone production, and zinc deficiency is directly associated with low testosterone. Supplementation can significantly increase testosterone in men who are deficient, but has minimal effect in men with adequate zinc status. Since marginal zinc deficiency is common (especially in athletes who lose zinc through sweat and people who eat limited red meat), it is worth testing zinc levels. Typical dose: 15-30 mg of elemental zinc daily (zinc picolinate or zinc bisglycinate for best absorption). For more on zinc forms, see our comparison of Zinc Picolinate vs Zinc Gluconate.

Quick Comparison of Testosterone Supplements

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Which Should You Choose?

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Choose Maca Root If:

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• Your testosterone levels are normal but your libido is low. Maca improves sexual desire through non-hormonal pathways, so it can work even when testosterone is not the problem
• You are a woman seeking libido, energy, or menopause support. Maca is one of the few “testosterone category” supplements that is genuinely useful and safe for women
• You take medications that interact with hormonal supplements (blood sugar drugs, immunosuppressants, hormone therapies). Maca does not alter hormone levels, so interaction risk is minimal
• You are trying to conceive and want to improve sperm quality (especially black maca for sperm count and motility)
• You want the lowest-risk option. Maca has been eaten as food for thousands of years and has the mildest side effect profile of any supplement in this category
• Budget is a major factor. Quality maca is 3-4 times cheaper per day than quality tongkat ali
• You are taking SSRIs and experiencing sexual side effects. A pilot study showed maca at 3,000 mg daily helped with SSRI-induced sexual dysfunction
• You have thyroid concerns under medical supervision and want a root-cause approach to energy and vitality (though monitor thyroid levels due to goitrogen content)

Choose Tongkat Ali If:

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• Your testosterone levels are clinically low or borderline and you want a natural approach before considering TRT (testosterone replacement therapy)
• You are a man over 40 experiencing multiple signs of age-related testosterone decline (fatigue, low libido, muscle loss, mood changes)
• You are chronically stressed and suspect high cortisol is suppressing your testosterone. Tongkat ali addresses both sides of this equation
• You want measurable, verifiable results on a blood test. Tongkat ali is one of the few natural supplements that can produce a detectable change in serum testosterone
• You are an athlete looking for legal performance support (tongkat ali is not banned by WADA or most sports organizations)
• Body composition is a priority. The combination of increased testosterone and decreased cortisol makes tongkat ali more effective for supporting lean mass gains and fat loss when combined with resistance training
• You want the strongest evidence-based testosterone-boosting herb. The 2022 meta-analysis puts tongkat ali in a category very few natural supplements reach

Consider Taking Both If:

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• You want comprehensive male optimization covering both hormonal (tongkat ali) and non-hormonal (maca) pathways
• You are trying to conceive and want to maximize both sperm quality (maca) and hormonal fertility (tongkat ali)
• You have tried one and gotten partial results and want to layer complementary mechanisms
• You can afford it. Combining both adds roughly $0.65-$1.90 per day to your supplement budget

A reasonable combined protocol:

• Morning: 200 mg tongkat ali (standardized extract) with breakfast
• Morning and/or afternoon: 1,500-3,000 mg gelatinized maca with food
• Cycle tongkat ali (5 days on/2 days off or 8 weeks on/2 weeks off)
• Maca can be taken continuously

A clinical trial registered at ClinicalTrials.gov (NCT05347329) is specifically investigating the efficacy and safety of a tongkat ali plus maca combination product, which suggests the scientific community recognizes the potential value of this stack.

Myths and Misconceptions

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Myth 1: “Maca Is a Natural Testosterone Booster”

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This is the most widespread misconception. Maca is marketed relentlessly as a “testosterone booster,” but the clinical evidence does not support this claim. Three randomized controlled trials with 126 men showed no change in testosterone. The 2023 trial in men with hypogonadism symptoms showed symptom improvement without testosterone changes. Maca is a legitimate supplement for libido, energy, and fertility, but calling it a testosterone booster is scientifically inaccurate.

Myth 2: “Tongkat Ali Will Give You Steroid-Like Results”

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While tongkat ali does raise testosterone, the magnitude is nowhere near exogenous testosterone or anabolic steroids. A 15-37% increase in testosterone from tongkat ali might take a man from, say, 350 ng/dL to 400-480 ng/dL. This is meaningful and can produce noticeable improvements in well-being, libido, and body composition, but it is not going to produce the dramatic muscle-building effects of pharmaceutical testosterone.

Myth 3: “Higher Doses Are Always Better”

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For both supplements, there is a ceiling effect. Maca studies using 1,500 mg and 3,000 mg showed similar libido improvements, suggesting that more is not necessarily better. A 2024 study found that 400 mg daily of tongkat ali did not improve testosterone in exercise-trained adults, even though lower doses (200 mg) showed benefits in moderately stressed adults. The optimal dose depends on your specific physiology, stress levels, and baseline hormone status.

Myth 4: “These Supplements Work Immediately”

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Neither maca nor tongkat ali produces overnight results. Maca typically takes 6-8 weeks before libido effects become apparent. Tongkat ali may show cortisol and mood improvements within 2-4 weeks, but testosterone optimization takes 4-12 weeks. If you quit after 2 weeks because “nothing is happening,” you have not given either supplement a fair trial.

Myth 5: “Natural Means No Side Effects”

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Both supplements can cause adverse effects. Tongkat ali can cause insomnia, irritability, and in rare cases liver stress. Maca can affect thyroid function in susceptible individuals. Natural does not mean risk-free, and both supplements have documented drug interactions (tongkat ali more so than maca).

Practical Buying Guide

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What to Look For in a Maca Product

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1. Gelatinized form (pre-cooked to remove starch, improving digestibility and bioactive concentration)
2. Organic certification (maca is a root vegetable that can absorb soil contaminants)
3. Sourced from Peru at high altitude (Junin region is considered the gold standard)
4. Color specified (yellow for general use, black for fertility, red for energy)
5. Third-party tested for heavy metals and microbial contamination
6. No unnecessary fillers (especially in capsule products)

What to Look For in a Tongkat Ali Product

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1. Standardized extract ratio (100:1 or 200:1 hot-water extraction)
2. Eurycomanone content specified (minimum 1-2%)
3. Malaysian or Indonesian sourced (most clinical research uses Malaysian tongkat ali)
4. Third-party tested for heavy metals (critical: contamination is a documented issue)
5. Branded extracts like Physta or LJ100 offer more consistency and research backing
6. Certificate of Analysis (COA) available from an independent lab

Building a Complete Testosterone Support Stack

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If testosterone optimization is your primary goal, no single supplement is a magic bullet. The most effective approach combines targeted supplementation with lifestyle factors:

Tier 1: Foundation (Fix These First)

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• Sleep: 7-9 hours of quality sleep is the single most important factor for testosterone production. Poor sleep can reduce testosterone by 10-15% in just one week
• Resistance training: Compound movements (squats, deadlifts, bench press) performed 3-4 times per week are proven to increase testosterone acutely and chronically
• Body fat management: Excess body fat increases aromatase activity (converting testosterone to estrogen). Getting to 10-20% body fat optimizes the hormonal environment

• Stress management: Chronic stress elevates cortisol, which directly suppresses testosterone synthesis
• Zinc and vitamin D status: Ensure you are not deficient in these critical testosterone cofactors. See our guide on Vitamin D2 vs Vitamin D3 for choosing the right form

Tier 2: Primary Supplements

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• Tongkat ali (200 mg standardized extract daily) for direct testosterone support
• Ashwagandha KSM-66 (600 mg daily) for cortisol reduction and additional testosterone support. Check out our comparison of L-Theanine vs Ashwagandha for Anxiety for more on ashwagandha
• Zinc (15-30 mg daily if levels are low or borderline)
• Vitamin D3 (2,000-5,000 IU daily, adjusted based on blood levels)
• Magnesium (200-400 mg daily, ideally glycinate form) for sleep and testosterone support. See our guide on Magnesium Glycinate vs Magnesium Citrate

Tier 3: Additional Support

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• Maca root (1,500-3,000 mg gelatinized daily) for libido and fertility support
• Boron (6-10 mg daily) for free testosterone optimization
• Creatine monohydrate (5 g daily) for DHT and exercise performance. See our guide on Best Creatine Supplements for Building Muscle

Tier 4: Lifestyle Optimization

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• Cold exposure (cold showers, ice baths) may acutely increase testosterone
• Limit alcohol (chronic alcohol consumption significantly reduces testosterone)
• Minimize endocrine disruptors (BPA, phthalates, parabens)
• Maintain healthy body weight (both obesity and being severely underweight reduce testosterone)

For men over 40, our guide on Best Supplements for Building Muscle After 40 covers additional strategies.

Common Questions About Maca Root

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What are the benefits of maca root?

Maca Root has been studied for various potential health benefits. Research suggests it may support several aspects of health and wellness. Individual results can vary. The strength of evidence differs across different claimed benefits. More high-quality research is often needed. Always review the latest scientific literature and consult healthcare professionals about whether maca root is right for your health goals.

Is maca root safe?

Maca Root is generally considered safe for most people when used as directed. However, individual responses can vary. Some people may experience mild side effects. It’s important to talk with a healthcare provider before using maca root, especially if you have existing health conditions, are pregnant or nursing, or take medications.

How much maca root should I take?

The appropriate dosage of maca root can vary based on individual factors, health goals, and the specific product formulation. Research studies have used different amounts. Always start with the lowest effective dose and follow product label instructions. Consult a healthcare provider for personalized dosage recommendations based on your specific needs.

What are the side effects of maca root?

Most people tolerate maca root well, but some may experience mild side effects. Common reported effects can include digestive discomfort, headaches, or other minor symptoms. Serious side effects are rare but possible. If you experience any unusual symptoms or reactions, discontinue use and consult a healthcare provider. Always inform your doctor about all supplements you take.

When should I take maca root?

The optimal timing for taking maca root can depend on several factors including its absorption characteristics, potential side effects, and your daily routine. Some supplements work best with food, while others are better absorbed on an empty stomach. Follow product-specific guidelines and consider consulting a healthcare provider for personalized timing recommendations.

Can I take maca root with other supplements?

Maca Root is a topic of ongoing research in health and nutrition. Current scientific evidence provides some insights, though more studies are often needed. Individual responses can vary significantly. For personalized advice about whether and how to use maca root, consult with a qualified healthcare provider who can consider your complete health history and current medications.

How long does maca root take to work?

The time it takes for maca root to work varies by individual and depends on factors like dosage, consistency of use, and individual metabolism. Some people notice effects within days, while others may need several weeks. Research studies typically evaluate effects over weeks to months. Consistent use as directed is important for best results. Keep a journal to track your response.

Who should not take maca root?

Maca Root is a topic of ongoing research in health and nutrition. Current scientific evidence provides some insights, though more studies are often needed. Individual responses can vary significantly. For personalized advice about whether and how to use maca root, consult with a qualified healthcare provider who can consider your complete health history and current medications.

Frequently Asked Questions

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See the FAQ section in the page metadata for common questions about maca root vs tongkat ali.

Recommended Products

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Related Articles

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• [Ashwagandha vs Rhodiola Rosea For Stress: Which Is Better? [Complete Comparison Guide]](/comparisons/ashwagandha-vs-rhodiola-rosea-for-stress/)
• Best Natural Testosterone Boosters: What Research Supports
• L-Theanine vs Ashwagandha For Anxiety: Which Is Better? [Complete Comparison Guide]
• Best Supplements for Building Muscle After 40
• [Creatine Monohydrate vs Creatine HCl: Which Is Better? [Complete Comparison Guide]](/comparisons/creatine-monohydrate-vs-creatine-hcl/)

References

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1. Gonzales, G.F., Cordova, A., Vega, K., et al. (2002). Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult healthy men. Andrologia, 34(6), 367-372. PMID: 12472620

2. Gonzales, G.F., Cordova, A., Gonzales, C., et al. (2001). Lepidium meyenii (Maca) improved semen parameters in adult men. Asian Journal of Andrology, 3(4), 301-303. PMID: 11753476

3. Gonzales, G.F., Cordova, A., Gonzales, C., et al. (2003). Effect of Lepidium meyenii (Maca), a root with aphrodisiac and fertility-enhancing properties, on serum reproductive hormone levels in adult healthy men. Journal of Endocrinology, 176(1), 163-168. PMID: 12525260

4. Kang, B.K., Kim, M.K., Kim, S.Y., et al. (2023). Efficacy and Safety of Maca (Lepidium meyenii) in Patients with Symptoms of Late-Onset Hypogonadism: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Nutrients, 15(12), 2754. PMID: 37375657

5. Dording, C.M., Schettler, P.J., Dalton, E.D., et al. (2015). A Double-Blind, Randomized, Pilot Dose-Finding Study of Maca Root (L. Meyenii) for the Management of SSRI-Induced Sexual Dysfunction. CNS Neuroscience & Therapeutics, 21(2), 106-114. PMID: 30803024

6. Kotirum, S., Ismail, S.B., Chaiyakunapruk, N. (2022). Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials. Medicina, 58(8), 1047. PMID: 36013514

7. Cho, H.K., et al. (2021). A 6-month, double-blind, placebo-controlled, randomized trial to evaluate the effect of Eurycoma longifolia (Tongkat Ali) and concurrent training on erectile function and testosterone levels in androgen deficiency of aging males (ADAM). Maturitas, 145, 78-85. PMID: 33541567

8. Henkel, R.R., Wang, R., Bassett, S.H., et al. (2014). Tongkat Ali as a potential herbal supplement for physically active male and female seniors: a pilot study. Phytotherapy Research, 28(4), 544-550. PMID: 23754792

9. Talbott, S.M., Talbott, J.A., George, A., Pugh, M. (2013). Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects. Journal of the International Society of Sports Nutrition, 10(1), 28. PMID: 23705671

10. Low, B.S., Das, P.K., Chan, K.L. (2013). Eurycomanone, the major quassinoid in Eurycoma longifolia root extract increases spermatogenesis by inhibiting the activity of phosphodiesterase and aromatase in steroidogenesis. Journal of Ethnopharmacology, 149(1), 201-207. PMID: 23810842

11. Clemesha, C.G., Thaker, H., Engel, R.J. (2024). A Rare Case of Tongkat Ali-Induced Liver Injury: A Case Report. Cureus, 16(4), e57832. PMID: 38628657

12. Roshanzamir, F., Safavi, S.M. (2024). Exploring the chemical and pharmacological variability of Lepidium meyenii: a comprehensive review of the effects of maca. Frontiers in Pharmacology, 15, 1360422. PMID: 38515842

13. Chauhan, S., Srivastava, M.K., Pathak, A.K. (2022). Effect of standardized root extract of ashwagandha (Withania somnifera) on well-being and sexual performance in adult males: A randomized controlled trial. Health Science Reports, 5(4), e741. PMID: 35873404

14. Martin, L.J., Touaibia, M. (2020). Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review. Advances in Nutrition, 12(3), 744-765. PMID: 34020699

15. Chauhan, N.S., Sharma, V., Dixit, V.K., Thakur, M. (2014). A review on plants used for improvement of sexual performance and virility. BioMed Research International, 2014, 868062.

Where to Buy Quality Supplements

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Based on the research discussed in this article, here are some high-quality options:

• Vitamin D Supplement
• Vitamin D3 Supplement
• Vitamin C Supplement
• Magnesium Supplement
• Magnesium Glycinate Supplement