Disclaimer: For informational purposes only. This does not constitute medical advice. Always consult a qualified healthcare professional before taking any medication.
Melatonin Dosage by Age
Comprehensive melatonin dosage reference organized by age, from toddlers through older adults. This guide provides the recommended starting dose, typical effective dose, and maximum dose for each age group.
Written by Mottalib Radif, MBA INSEAD, Finance Enthusiast
Melatonin Dosage by Age Chart
Children & Adolescents
| Age/Weight | Dose | Frequency | Max Daily | Notes |
|---|---|---|---|---|
| 1-3 years | 0.5-1 mg (start with 0.5 mg) | 30-60 min before bedtime | 1 mg | Physician guidance required. |
| 4-6 years | 1 mg (start with 0.5-1 mg) | 30-60 min before bedtime | 2 mg | — |
| 7-9 years | 1-2 mg | 30-60 min before bedtime | 3 mg | — |
| 10-12 years | 1-3 mg | 30-60 min before bedtime | 3 mg | — |
| 13-17 years | 1-5 mg | 30-60 min before bedtime | 5 mg | Teens may benefit from earlier bedtime melatonin due to natural phase delay. |
- Dose
- 0.5-1 mg (start with 0.5 mg)
- Frequency
- 30-60 min before bedtime
- Max Daily
- 1 mg
Physician guidance required.
- Dose
- 1 mg (start with 0.5-1 mg)
- Frequency
- 30-60 min before bedtime
- Max Daily
- 2 mg
- Dose
- 1-2 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 3 mg
- Dose
- 1-3 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 3 mg
- Dose
- 1-5 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 5 mg
Teens may benefit from earlier bedtime melatonin due to natural phase delay.
Disclaimer: For informational purposes only. This does not constitute medical advice. Always consult a qualified healthcare professional before taking any medication.
Adults
| Age/Weight | Dose | Frequency | Max Daily | Notes |
|---|---|---|---|---|
| 18-30 years | 0.5-3 mg | 30-60 min before bedtime | 5 mg | Young adults often respond well to low doses. |
| 31-50 years | 0.5-5 mg | 30-60 min before bedtime | 5 mg | — |
| 51-65 years | 0.5-3 mg | 30-60 min before bedtime | 5 mg | Melatonin production naturally declines; supplementation may be more helpful. |
| 65+ years | 0.5-2 mg | 30-60 min before bedtime | 2 mg | Start very low. Older adults are more sensitive to melatonin. |
- Dose
- 0.5-3 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 5 mg
Young adults often respond well to low doses.
- Dose
- 0.5-5 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 5 mg
- Dose
- 0.5-3 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 5 mg
Melatonin production naturally declines; supplementation may be more helpful.
- Dose
- 0.5-2 mg
- Frequency
- 30-60 min before bedtime
- Max Daily
- 2 mg
Start very low. Older adults are more sensitive to melatonin.
Disclaimer: For informational purposes only. This does not constitute medical advice. Always consult a qualified healthcare professional before taking any medication.
Important Dosage by Age Warnings
Melatonin Dosage by Age Precautions
- These are general guidelines. Individual responses to melatonin vary significantly.
- Always start with the lowest dose in the range for your age group.
- Melatonin supplements are not regulated like medications. Choose certified products.
- If melatonin does not improve sleep within 2 weeks, consult a healthcare provider.
- Do not combine melatonin with alcohol or other sedatives.
For a complete list of warnings and safety information, see the Melatonin dosage guide warnings section.
Dosage by Age FAQ
Sources & References
- 1.NIH - NCCIH: MelatoninAccessed 2025-01-15
- 2.Sleep Foundation - Melatonin DosageAccessed 2025-01-15
- 3.American Academy of Sleep Medicine - Melatonin Use in ChildrenAccessed 2025-01-15
Other Melatonin Dosage Guides
Melatonin Complete Dosage Guide
Return to the full melatonin overview with all dosing information, side effects, and interactions