Recommended Doses for Common Uses
Melatonin dosing varies by age, purpose, and form (supplement, not FDA-regulated drug). Adults typically start with 0.5-1 mg taken 30-60 minutes before bedtime for sleep onset issues. For jet lag, 0.5-5 mg works, often 1-3 mg. Higher doses up to 10 mg are used short-term for shift work or insomnia but lack strong evidence for benefits beyond low doses.[1][2]
Children under 3 rarely need it; ages 3-12 use 0.25-1 mg; teens 1-5 mg, always under doctor guidance due to developmental risks.[3]
How Long to Take It and Timing Tips
Short-term use (weeks) is safest; long-term safety is unclear. Time release matches natural peak (around 10 PM). Extended-release forms (1-3 mg) suit maintenance insomnia.[1][4]
Forms and How to Adjust Dose
Available as tablets, gummies, liquids (0.3-10 mg), or sublingual. Start low to avoid grogginess. If no effect after 1-2 weeks, increase gradually but cap at 5-10 mg. Body weight matters: 0.1 mg/kg for kids.[2][3]
Side Effects from Overdosing or Common Issues
Doses over 10 mg raise risks of daytime drowsiness, headaches, dizziness, nausea, or vivid dreams. Rare: mood changes, blood pressure drops. Avoid with blood thinners, diabetes meds, or immunosuppressants.[1][4]
Differences for Specific Groups
Pregnant/breastfeeding: Avoid. Elderly: Start at 0.5 mg due to slower metabolism. Those with autoimmune disease or depression: Caution, as it may worsen symptoms.[2]
Natural vs. Supplemental Melatonin
Body produces 0.1-0.3 mg nightly; supplements mimic this. Low-dose (under 1 mg) closest to physiologic levels for best tolerance.[1]
[1]: National Center for Complementary and Integrative Health (NCCIH) - Melatonin
[2]: Mayo Clinic - Melatonin
[3]: American Academy of Pediatrics - Melatonin Use in Children
[4]: Sleep Foundation - Melatonin Dosage