Standard Melatonin Dosing for Adults
Melatonin is typically taken 30-60 minutes before bedtime. Common starting dose is 0.5-1 mg, increasing to 3-5 mg if needed, with a max of 10 mg per night. Higher doses don't improve sleep and may cause side effects.[1]
Dosing for Children
Children under 3 rarely need it; for ages 3-10, start at 0.25-0.5 mg, up to 3 mg max. Teens follow adult dosing from 1 mg. Always consult a pediatrician, as evidence is limited.[1][2]
How Long to Take It and Timing Tips
Use short-term (weeks) for jet lag or shift work; long-term only under medical supervision. For jet lag, take 0.5-5 mg at target bedtime starting the day of travel. Avoid daytime use to prevent grogginess.[1]
Forms and Absorption Differences
Available as immediate-release tablets (faster onset), extended-release (sustained sleep), gummies, or liquids. Extended-release mimics natural release, dosed at 2 mg for older adults with insomnia.[1][2]
Why Doses Vary by Condition
- Insomnia: 2-3 mg.
- Jet lag: 0.5-5 mg.
- Shift work: 1-5 mg before shift.
Individual factors like age, weight, and sensitivity affect response; start low.[1]
Common Side Effects from Overdosing
Doses over 5-10 mg often cause daytime drowsiness, headaches, dizziness, or nausea. Vivid dreams or stomach upset possible at 3+ mg. Rare risks include hormone disruption with chronic high use.[1][2]
Interactions and Who Should Avoid It
Reduces effectiveness of blood thinners, blood pressure meds, or sedatives. Avoid with autoimmune diseases, depression, or seizure disorders. Not FDA-regulated as a drug, so check purity.[1]
Melatonin vs. Prescription Sleep Aids
Unlike Ambien (5-10 mg, controlled), melatonin is OTC with milder effects and no dependency risk. Prescription options like Lunesta start at 1 mg but carry blackout warnings.[2]
[1] Mayo Clinic: Melatonin Dosing
[2] NCCIH: Melatonin Safety