Melatonin Dosage Calculator
Calculate optimal melatonin dosage for sleep disorders, jet lag, and other conditions with evidence-based recommendations
Calculate Melatonin Dosage
Select the condition for which melatonin is being considered
Age affects dosing recommendations and safety considerations
How long will you be taking melatonin?
Select the form of melatonin you plan to use
Amount of melatonin per tablet
Important Medical Disclaimer
This calculator provides general dosing guidelines only. Melatonin can interact with medications and may not be suitable for everyone. Always consult a healthcare provider before starting melatonin, especially for children, pregnant women, or those with medical conditions.
Dosage Recommendation
Dosing Guidelines
For general sleep onset difficulties
Safety Assessment
Conservative dose within safe range
Melatonin Dosing Guidelines by Indication
| Indication | Adult Dose | Timing | Max Duration |
|---|---|---|---|
Trouble Falling Asleep | 0.3-5 mg | 1 hour before bedtime | 30 days |
Jet Lag | 0.5-5 mg | Before bedtime at destination | 7 days |
Shift Work Sleep Disorder | 1-5 mg | 30-60 minutes before intended sleep | 28 days |
Sleep Disorders in Blind People | 0.5-3 mg | 9-10 PM daily | 90 days |
Beta-Blocker Induced Insomnia | 2-3 mg | 1 hour before bedtime | 28 days |
Endometriosis | 10 mg | Before bedtime | 56 days |
Delayed Sleep Phase Syndrome | 0.5-5 mg | 5-6 hours before natural sleep time | 21 days |
Potential Side Effects
Common
Drowsiness, headache, dizziness, nausea
Serious
Mood changes, vivid dreams, daytime sleepiness
Allergic
Swelling, hives, breathing difficulty - seek help!
Usage Tips
Start with the lowest effective dose
Take at consistent times daily
Maintain good sleep hygiene
Consult doctor for long-term use
Avoid alcohol and driving after taking
Understanding Melatonin Dosage
What is Melatonin?
Melatonin is a hormone naturally produced by the pineal gland in the brain. It regulates your sleep-wake cycle and is released in response to darkness. Synthetic melatonin supplements can help treat various sleep disorders and circadian rhythm disruptions.
Key Dosing Principles
Start Low, Go Slow:
Begin with 0.3-1 mg and increase gradually
Timing Matters:
Take 30-60 minutes before desired sleep time
Not Weight-Based:
Dosing is condition-specific, not based on body weight
When to Use Melatonin
Appropriate Uses:
- • Sleep onset difficulties
- • Jet lag recovery
- • Shift work sleep disorder
- • Delayed sleep phase syndrome
- • Some medical conditions (with supervision)
Not Recommended For:
- • Healthy children (without medical indication)
- • Pregnant or nursing women
- • People with autoimmune disorders
Important: Melatonin is not regulated as strictly as prescription medications. Quality and dosing accuracy can vary between brands. Choose reputable manufacturers and verify actual melatonin content through third-party testing when possible.