Melatonin Dosage Guide: 0.5mg vs 3mg vs 10mg - What Works Best? March 2, 2026·55 mins Sleep Melatonin Sleep Supplements Dosage Guide Insomnia Circadian Rhythm Compare melatonin dosages head-to-head. Research shows 0.5mg often works as well as 10mg with fewer side effects. Find your optimal dose.