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My sleep reset
Starting with the gentle, well studied stuff before anything stronger.
Magnesium glycinateGlycineMelatoninL-theanine
No. 015supplement
Melatonin
Melatonin is a supplement that is sold over the counter.
Also known as N-acetyl-5-methoxytryptamine
Melatonin is made by the pineal gland in the evening and helps set the body clock. Supplements are among the most used sleep aids in the US, mostly for jet lag, shift work and falling asleep.
In 1 example journal
Is Melatonin FDA-approved?
Sold without a prescription. Supplements are not reviewed by the FDA before sale, so third-party testing matters. Sold over the counter as a dietary supplement in the US (it is a prescription product in some other countries).
As of September 23, 2026.
Key takeaways
- Melatonin is the hormone your brain makes in the dark to set your body clock. It is sold over the counter in the US.
- It helps most with timing problems, like jet lag and some body-clock disorders.
- The American Academy of Sleep Medicine suggests against using it for ordinary chronic insomnia.
- Product labels are often inaccurate, and accidental swallowing by young children has risen sharply.
How does Melatonin work?
Your brain releases melatonin in the evening as light fades. It tells your body clock it is night, rather than knocking you out like a sleeping pill.
That is why timing matters more than amount. Taken at the right time, it can shift your body clock earlier, which helps with jet lag and some circadian rhythm disorders. It does less for insomnia caused by stress or other conditions.
What does the evidence say about Melatonin?
Moderate human evidenceTrials show it can modestly shorten the time to fall asleep and help with jet lag; effects on total sleep are small.
What to expect
What trials and prescribing information measured over time. Everyone responds differently.
- Days, around travel
Jet lag trials timed melatonin close to target bedtime at the destination over the first few days after arrival.
What do clinicians say about Melatonin?
Sleep specialists see melatonin as a body-clock tool, not a general sleeping pill, and urge care with children and product quality.
The American Academy of Sleep Medicine's 2017 insomnia guideline suggests clinicians not use melatonin to treat trouble falling or staying asleep in chronic insomnia (a weak recommendation).
AASM clinical practice guideline: pharmacologic treatment of chronic insomnia (2017)AASM's 2015 circadian guideline supports carefully timed melatonin for delayed sleep phase disorder and for blind adults with non-24-hour rhythm disorder, and recommends against it for older adults with dementia.
AASM clinical practice guideline: intrinsic circadian rhythm sleep-wake disorders (2015)AASM advises treating melatonin like any medicine around children: talk to a pediatric clinician first, keep it out of reach, and choose products with the USP Verified Mark.
AASM health advisory: melatonin use in children and adolescents (2022)NCCIH reports a 2023 study found 22 of 25 melatonin gummies were inaccurately labeled, and that about 11,000 emergency visits followed children under 5 swallowing melatonin between 2019 and 2022.
NCCIH: Melatonin, what you need to knowA Cochrane review found melatonin can reduce jet lag, especially for adults crossing five or more time zones flying east.
Cochrane review: melatonin for the prevention and treatment of jet lag (2002)
Summaries of published guidelines, drug labels, regulators and reviews, each attributed to its source. DiscoverMedica does not employ clinicians.
Is Melatonin right for you, and who should avoid it?
Often considered for
- Travelers crossing several time zones
- People with delayed sleep phase or other body-clock disorders, with a clinician
- Shift workers, though evidence there is inconclusive
Not a fit, or needs extra care
- Pregnancy or breastfeeding: safety has not been studied
- Children, unless a pediatric clinician advises it
- People with epilepsy, or on blood thinners, blood pressure or diabetes medication, should check first
- Anyone who feels groggy the next day should not drive
Only a licensed clinician who knows your history can decide whether it is right for you.
What are the risks and side effects of Melatonin?
- Testing has found actual melatonin content in some products far from the label, and some gummies contain unlisted ingredients.
- Next-day drowsiness, headache and dizziness are possible; do not drive if you feel sleepy.
- Can interact with blood thinners, blood pressure drugs, diabetes medications, immunosuppressants and sedatives.
- Pediatric ER visits for accidental ingestion have risen; keep gummies away from children.
What should you ask a clinician about Melatonin?
- Is my sleep problem about timing or something else, like apnea or anxiety?
- Could it interact with my medications?
These save with the compound when you add it to My Journal, so they’re on the printout for your visit.
How do people buy Melatonin?
No prescription is needed. Supplement brands and retailers sell it online and in stores.
Check with a clinician or pharmacist first if you take prescription medication or have a chronic condition.
Choose a product with independent testing, such as NSF Certified for Sport or USP Verified, because FDA does not check supplements before they are sold.
If sleep problems last more than a few weeks, see a clinician to rule out insomnia, sleep apnea or other causes.
Where some people buy it
- Life ExtensionSells melatonin in several strengths direct online; says a certificate of analysis summary is available for every supplement on request.
- ThorneSells a melatonin capsule direct to consumers.
- iHerbCarries melatonin from many brands, sold and shipped by iHerb.
From each provider’s own site, checked September 23, 2026. Programs change, so confirm the details before you sign up.
Where can I get Melatonin?
13 providers list Melatonin on DiscoverMedica, lowest listed price first.
$6.99listed price†
Buy at NOW Foods $11.50listed price†
Buy at Pure Encapsulations † Prices as listed by the provider when we checked; they change.
Compare and learn
Melatonin: questions, answered
Is melatonin a sleeping pill?
Not really. It signals night-time to your body clock. It helps most with timing problems like jet lag, and less with insomnia from stress or other causes.
Is it safe for kids?
Only with a pediatric clinician's advice. Accidental ingestion by young children has risen sharply, so store it like medicine.
Why do products vary so much?
Supplements are not checked by FDA before sale, and testing has found actual melatonin content far from the label. Look for a USP Verified Mark.
What works better for chronic insomnia?
Cognitive behavioral therapy for insomnia (CBT-I) is the first-line treatment in guidelines. A clinician can also check for sleep apnea and other causes.
Can I get it through telehealth?
It does not need a prescription in the US. You buy it from supplement brands and retailers.
Important safety information
Key risks
- Testing has found actual melatonin content in some products far from the label, and some gummies contain unlisted ingredients.
- Next-day drowsiness, headache and dizziness are possible; do not drive if you feel sleepy.
- Can interact with blood thinners, blood pressure drugs, diabetes medications, immunosuppressants and sedatives.
- Pediatric ER visits for accidental ingestion have risen; keep gummies away from children.
Talk to a clinician first, or avoid it, if
- Pregnancy or breastfeeding: safety has not been studied
- Children, unless a pediatric clinician advises it
- People with epilepsy, or on blood thinners, blood pressure or diabetes medication, should check first
- Anyone who feels groggy the next day should not drive
This is not a complete list of risks. Talk to a licensed clinician or pharmacist about your own situation. If you have a severe reaction, call 911. You can report side effects to the FDA through MedWatch at 1-800-FDA-1088.
Sources
- NCCIH: Melatonin, what you need to know
- Meta-analysis: melatonin for the treatment of primary sleep disorders (2013)
Also checked for this guide
- AASM clinical practice guideline: pharmacologic treatment of chronic insomnia (2017)
- AASM clinical practice guideline: intrinsic circadian rhythm sleep-wake disorders (2015)
- AASM health advisory: melatonin use in children and adolescents (2022)
- Cochrane review: melatonin for the prevention and treatment of jet lag (2002)
- Life Extension: Safety and certificates of analysis
- Thorne: Home and testing
- iHerb: Quality
Guide reviewed September 23, 2026.
Educational information only, not medical advice. It does not replace a conversation with a licensed clinician.
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