Melatonin is the most purchased sleep supplement in the US. But most Americans are taking the wrong dose. The research consistently shows 0.5–1mg is more effective than the 5–10mg doses in most commercial products. We explain why, and rank the best melatonin supplements.
Why We Reviewed Guide
Melatonin signals sleep onset — it doesn't knock you out like a sedative. Physiological doses (0.5–1mg) mimic natural release. Higher doses can cause morning grogginess and paradoxically disrupt the sleep-wake cycle over time.
✅ Pros
- Effective for jet lag and shift work
- Helps establish sleep timing
- Very safe at appropriate doses
- Over-the-counter and inexpensive
❌ Cons
- Most products massively overdose (5–10mg typical)
- Dependence possible with long-term use
- Grogginess if timing is wrong
Key Ingredients
- Melatonin (0.3–1mg ideal dose)
- Timed-release forms useful for sleep maintenance
- Combined with L-theanine or magnesium for deeper sleep
Who Is This For?
Shift workers, jet lag travelers, those with delayed sleep phase, and anyone having trouble establishing regular sleep timing.
Check Current Price on Guide
Find our recommended low-dose melatonin supplements through our links.
View Best Price →Price & Value
Melatonin is very affordable: $5–$15 for a 3–6 month supply.
Our Verdict
Less is more with melatonin. Look for 0.5–1mg supplements (Natrol, Life Extension) rather than 5–10mg products. Combine with sleep hygiene habits for best results. We give it a N/A/5 and recommend it for shift workers, jet lag travelers, those with delayed sleep phase, and anyone having trouble establishing regular sleep timing.