hormone

Melatonin

Melatonin is a hormone naturally produced by the pineal gland in response to darkness, serving as your body's primary sleep signal. It regulates your circadian rhythm by telling your body when it is time to sleep and when to wake. While your body produces melatonin naturally, production declines with age, and modern lifestyles with artificial light exposure, screen time, and irregular schedules can further disrupt natural melatonin production.

As a supplement, melatonin is most effective for resetting circadian rhythm disruptions such as jet lag, shift work sleep disorder, and delayed sleep phase syndrome. It is not a sedative and works differently from sleep medications: rather than forcing sleep, it signals to your body that nighttime has arrived. Research shows that lower doses (0.5-1 mg) are often more effective than higher doses for most sleep issues, as they more closely mimic the body's natural production levels.

Beyond sleep, melatonin is a potent antioxidant with emerging research supporting its role in immune modulation, neuroprotection, and anti-aging. To optimize melatonin supplementation, start with the lowest effective dose, take it 30-60 minutes before your desired bedtime, and combine it with good sleep hygiene practices like dimming lights and avoiding screens in the evening.

Key Benefits

Regulates circadian rhythm and signals sleep onset
Reduces sleep onset latency (time to fall asleep)
Effective for jet lag and shift work sleep adjustment
Powerful antioxidant with neuroprotective properties
Generally well-tolerated with low side effect profile
May support immune function

Potential Risks

Can cause morning grogginess if dose is too high
May cause vivid dreams or nightmares in some individuals
Not recommended for long-term use in children without medical supervision
Can interact with blood pressure medications and immunosuppressants

Dosage Guide

0.5–5mg/day

Start with the lowest dose (0.3-0.5 mg) and increase only if needed. More is not better with melatonin; lower doses often work better by mimicking natural production. Take 30-60 minutes before desired bedtime.

Warnings

  • Start low (0.5 mg) and increase gradually
  • Higher doses can cause next-day grogginess
  • Can interact with blood pressure and immunosuppressant medications
Calculate your personalized dose →

When to Take

Best Time

30-60 minutes before desired bedtime

With Food?

Can take on empty stomach

Spacing

Dim lights and avoid screens 1-2 hours before taking melatonin for best results

Available Forms

Sublingual

excellent

Fast-acting. Dissolves under tongue for rapid absorption. Best for sleep onset.

Capsule

good

Standard form. Takes 30-60 minutes to take effect.

Gummy

moderate

Tastes good but often contains added sugars and may have imprecise dosing.

Extended-Release

good

Releases gradually through the night. Best for those who wake in the middle of the night.

What to Pair With Melatonin

Use Caution With

5-HTP

Both affect serotonin/melatonin pathways; combination may cause excessive sedation

Alcohol

Alcohol disrupts sleep architecture and may amplify melatonin's sedative effects

Check your full stack for interactions →

Research on Melatonin

Meta-analysis: melatonin for the treatment of primary sleep disorders

PubMed ID: 23691095

Melatonin for jet lag and shift work sleep disorders

PubMed ID: 12076414

Melatonin: safety and side effects in humans

PubMed ID: 30036891

Frequently Asked Questions About Melatonin

Is less melatonin really more effective?

For most people, yes. Research suggests that doses of 0.3-1 mg more closely replicate the body's natural melatonin production and are as effective (or more effective) for sleep onset than higher doses. Excessive melatonin can desensitize your receptors over time, cause morning grogginess, and may even disrupt your natural circadian rhythm. If you have been taking 5-10 mg and experiencing grogginess, try reducing to 0.5-1 mg and you may find it works better.

How should I use melatonin for jet lag?

For eastward travel, take 0.5-3 mg of melatonin at the bedtime of your destination time zone, starting the night you arrive and continuing for 3-5 nights. For westward travel, melatonin is less necessary but can be taken if you wake too early in the new time zone. The key is using melatonin to shift your circadian clock in the desired direction. Combining melatonin with strategic light exposure (bright light in the morning at your destination) maximizes the resetting effect.

Is melatonin addictive or habit-forming?

No, melatonin is not addictive and does not create physical dependence. Unlike prescription sleep medications such as benzodiazepines or Z-drugs, melatonin does not alter GABA receptor function or produce withdrawal symptoms when discontinued. Your body continues to produce its own melatonin while supplementing. However, some people develop a psychological habit of taking melatonin and may find it harder to fall asleep without it due to expectation, not physiological dependence. Taking periodic breaks can help maintain confidence in your body's natural sleep ability.

Calculate Your Melatonin Dose

Want to optimize your health?

Create your free account and start tracking what matters.

Sign Up Free