Melatonin 1 mg: The Trial Dose, and Which Tablets Deliver It
Not medical advice. This summarizes the low-dose melatonin trials, the labels manufacturers file with the NIH, and current Amazon prices. Melatonin is a hormone; talk to a clinician before giving it to a child, in pregnancy, or alongside blood thinners, blood-pressure drugs, fluvoxamine or immunosuppressants.
Quick answer
1 mg is the dose the sleep trials treat as typical, and it is genuinely hard to buy. Low doses of 0.3 to 1 mg shortened the time to fall asleep in the original dose-finding studies, the benefit peaks around 4 mg and rises no further, and the grogginess that sends people searching for a lower dose tracks the dose. Yet of the 808 melatonin labels with a declared dose that we read, only 123 sell 1 mg or less; 685 sell more, and the median label is 3 mg.
Start at 1 mg, two to three hours before bed, and buy a bottle made at that dose. The cheapest 1 mg tablet we track is Carlyle Melatonin 1 mg at $0.033 a night; the smallest bottle for a trial is Life Extension Melatonin 1 mg, 60 capsules for $4.39. See every 1 mg product ranked →
Every 1 mg melatonin we track, ranked by cost per dose
Product links go to Amazon and we may earn a commission if you buy. It never changes which product we pick or what we say about it. How we choose.
One tablet, capsule or lozenge is one 1 mg dose on every product here, so cost per dose is the pack price divided by the count and a bottle lasts as many nights as it has units. Format and verification are read from each label; products whose label is a blend (melatonin plus B vitamins or magnesium) are excluded. Cheapest first; prices are the current Amazon price for the exact pack.
| Product | Per dose | Nights per bottle | Price | Format | Dissolves in mouth | Verification | Buy |
|---|---|---|---|---|---|---|---|
 Carlyle Melatonin 1 mg | $0.033 | 300 | $9.99 | tablet | no | none stated | Check price |
 Source Naturals Sleep Science Melatonin 1 mg | $0.060 | 300 | $17.85 | lozenge | yes | Non-GMO Verified | Check price |
 Life Extension Melatonin 1 mg | $0.073 | 60 | $4.39 | capsule | no | none stated | Check price |
 Natrol Melatonin 1 mg Fast Dissolve, Strawberry | $0.077 | 200 | $15.49 | tablet | yes | none stated | Check price |
 Natrol Melatonin 1 mg | $0.082 | 180 | $14.70 | tablet | no | none stated | Check price |
The spread is $0.033 to $0.082 a night, 2.5× from cheapest to priciest; a year at one a night runs $12 to $30. None of the 5 carries a USP Verified mark, which matters more here than for most supplements (see the label-accuracy evidence below); the USP-verified melatonin we track, Nature Made Melatonin 3 mg, is 3 mg.
What 1 mg of melatonin does, from the dose-finding trials
The reason 1 mg is the trial dose is that the studies which established melatonin as a sleep aid used it or less. In healthy young men, 0.3 or 1 mg taken in the early evening shortened the time to fall asleep without a hangover effect the next morning (Zhdanova 1995, PMID 7768078), and the same doses taken two to four hours before habitual bedtime shortened sleep-onset latency again in a second study (Zhdanova 1996, PMID 8843534). In adults over 50 with age-related insomnia, a 0.3 mg physiologic dose restored sleep efficiency, while the 3 mg pharmacologic dose produced plasma levels far above normal and next-day effects (Zhdanova 2001, PMID 11600532). In healthy young adults, 0.3 mg and 5 mg had similar sleep-facilitating effects when taken during the biological day, when the body’s own melatonin is absent (Wyatt 2006, PMID 16774150).
The pooled numbers are modest and consistent. Across 19 trials and 1,683 people, melatonin shortened sleep-onset latency by about 7.06 minutes, with larger effects at higher doses and longer durations (Ferracioli-Oda 2013, PMID 23691095), and the 26-trial dose-response meta-analysis found the benefit rising to about 4 mg and then flat, with the best timing about three hours before bed (Cruz-Sanabria 2024, PMID 38888087). Above that, a systematic review of trials at 10 mg and up found more adverse events and no extra sleep (Menczel Schrire 2022, PMID 34923676). 1 mg is where the curve starts; it is not where it ends, and the honest framing is a trial dose: take it at the right time for a week, and only then decide whether 2 or 3 mg is worth the daytime cost. The American Academy of Sleep Medicine, for what it is worth, does not recommend melatonin for chronic insomnia in adults at any dose (Sateia 2017, PMID 27998379); the evidence is for sleep onset and circadian timing, not for staying asleep.
Who 1 mg is for
1 mg is for the first week, for older adults, and for anyone who wakes up groggy on 5 or 10 mg. Grogginess, headache and vivid dreams track dose, and the older-adult trial is the clearest case: the physiologic dose worked and the pharmacologic dose carried over into the next day. Jet-lag and shift-timing use is about when you take it more than how much. It is also the dose to try before assuming melatonin does not work for you, since a 5 mg tablet taken at bedtime is both too much and too late.
1 mg is not a treatment for chronic insomnia or for staying asleep. The trials show a shorter time to fall asleep and a modest gain in total sleep, not a cure for 3 am waking; if that is the problem, the can’t-sleep guide goes through what the evidence actually supports. Children should not be given melatonin without a clinician: paediatric melatonin ingestions reported to US poison centres rose 530% between 2012 and 2021 (Lelak 2022, PMID 35653284), and gummies are the least accurately labelled format. The side effects page covers the drug interactions and the dose-dependent harms in full.
We read 819 melatonin labels: the trial dose is 15% of the shelf
Original research819 of the 1,804 melatonin labels in the NIH Dietary Supplement Label Database were retrieved on 2026-08-28, 808 with a declared dose per serving, from 241 brands. Each label’s dose was compared with the 0.5–3 mg range the sleep trials used and the 1 mg they treat as typical. Both counts below were recomputed in each half of the read order and held.
Of the 808 labels that declare a dose, 123 sell 1 mg or less and 685 sell more; 370 sell more than 3 mg, the top of the range the trials used at all. The median label sells 3 mg per serving, 3 times the typical trial dose; the 90th percentile sells 10 mg and the largest single label we read sells 60 mg. 393 of the labels are tablets and 87 are gummies or jellies, descriptive counts of the shelf rather than validated findings, and gummies are the format the JAMA analysis found least accurate. The practical consequence is the one this page exists for: “just take 1 mg” is advice the shelf does not make easy to follow, so the trial dose usually means seeking out one of the low-dose products above.
| Item | Value ( labels) |
|---|---|
| 1 mg or less | 123 labels |
| More than 1 mg | 685 labels |
| More than 3 mg | 370 labels |
How we read the labels, and what did not hold
Method: 819 labels retrieved from the NIH Dietary Supplement Label Database (DSLD) v9 on 2026-08-28; 808 with a declared melatonin dose per serving were compared with the studied range (0.5–3 mg, typical 1 mg). Each finding was recomputed in both halves of the read order: 2 of 3 held (most of the market sells above the typical dose; a large share sells above the studied range) and only those are printed as findings. Not printed (1): median dose as directed exceeds per-serving. The median, 90th percentile, maximum and form counts are descriptive figures for the shelf, not validated findings, and no count on this page is of labels at exactly 1 mg. The census is published as open data at /melatonin/1-mg.json (CC BY 4.0). What it cannot tell you: sales volume per label, whether a product contains what its label says, or anything about products that have not filed with the NIH.
Label accuracy is the other reason to buy a 1 mg product rather than split a bigger one. In a 2017 analysis of 31 melatonin products, measured content ran from 83% below the label to 478% above it, and 71% were not within 10% of the label (Erland 2017, PMID 27855744). In 2023, 22 of 25 melatonin gummies sold in the US were inaccurately labelled, with content from 74% to 347% of the stated dose (Cohen 2023, PMID 37097362). A 3 mg tablet that is really 5, split unevenly, is not a 1 mg dose.
Which melatonin 1 mg to buy
Want to go lower still? Life Extension Melatonin 300 mcg is the 0.3 mg physiologic dose from the older-adult trial, at $0.075 a night on the cost-per-dose page. The dosage guide maps dose to situation, and the best-overall ranking covers the whole shelf.
Frequently asked questions
Is 1 mg of melatonin enough?
For sleep onset in an otherwise healthy adult, the trials say yes. In young adults, 0.3 and 1 mg taken in the early evening both shortened the time to fall asleep, and 0.3 and 1 mg taken two to four hours before bedtime did the same; in adults over 50 with age-related insomnia, 0.3 mg restored sleep efficiency without the next-day carry-over that 3 mg produced. 1 mg sits at the top of that physiologic range. If 1 mg does nothing after a week taken at the right time, the dose-response meta-analysis found the benefit keeps rising to about 4 mg and not beyond; there is no evidence for the 10 mg tablets.
Is 1 mg of melatonin better than 5 mg or 10 mg?
Not weaker, and with fewer side effects. In healthy young adults, 0.3 mg and 5 mg produced similar sleep effects when taken during the biological day, and in older adults 3 mg caused a next-day hangover that 0.3 mg did not. The 2024 dose-response meta-analysis of 26 trials found the sleep benefit peaks at about 4 mg; a 2022 review of doses of 10 mg and up found more adverse events, not more sleep. 1 mg is the sensible first dose because it captures most of the effect at the least risk of grogginess.
How many melatonin labels actually sell 1 mg?
Few. Of the 808 melatonin labels with a declared dose that we read in the NIH label database, 123 sell 1 mg or less (15%) and 685 sell more; 370 sell more than the 3 mg top of the range the trials used at all. The median label is 3 mg, the 90th percentile 10 mg and the largest 60 mg. That is why the trial dose usually means a specific low-dose product rather than the first bottle on the shelf.
Which melatonin 1 mg is best?
On cost per dose, Carlyle Melatonin 1 mg at $0.033 a night; the smallest bottle for a trial is Life Extension Melatonin 1 mg with 60 capsules. None of the 5 1 mg products we track carries a USP Verified mark; the USP-verified melatonin we track is Nature Made Melatonin 3 mg at 3 mg, which is a different dose. Label accuracy matters more with melatonin than with most supplements: in a 2017 analysis of 31 products, measured content ran from 83% below to 478% above the label and 71% missed by more than 10%.
When should I take 1 mg of melatonin?
Earlier than most people do. The trials that found an effect gave low doses in the evening, two to four hours before habitual bedtime in the 1996 study, or in the early evening in the 1995 study; the dose-response meta-analysis found timing about three hours before bed worked best. Melatonin is a timing signal, not a sedative, so 1 mg at 11 pm for an 11 pm bedtime is the least effective way to take it.
Can I split a 3 mg tablet instead of buying 1 mg?
You can, and it is how many people reach a low dose, but two things argue for a 1 mg product. Fast-dissolve and coated tablets do not split evenly, so the dose varies night to night, and the content variability already on the label makes that worse. And the cheapest 1 mg tablet we track costs $0.033 a night, which is not a price worth splitting for. If you already own a USP-verified 3 mg tablet, a third of it is a reasonable trial dose.
Related guides
- Melatonin: what to buy and how much
- Melatonin dosage guide
- Melatonin side effects: a dose problem
- Best melatonin supplement, ranked
- Melatonin cost per dose
- Melatonin gummies
- Can’t sleep: what the evidence supports
Sources
- Zhdanova IV, et al. “Sleep-inducing effects of low doses of melatonin ingested in the evening.” Clin Pharmacol Ther. 1995. PMID: 7768078
- Zhdanova IV, et al. “Effects of low oral doses of melatonin, given 2-4 hours before habitual bedtime, on sleep in normal young humans.” Sleep. 1996. PMID: 8843534
- Zhdanova IV, et al. “Melatonin treatment for age-related insomnia.” J Clin Endocrinol Metab. 2001. PMID: 11600532
- Wyatt JK, et al. “Sleep-facilitating effect of exogenous melatonin in healthy young men and women is circadian-phase dependent.” Sleep. 2006. PMID: 16774150
- Ferracioli-Oda E, Qawasmi A, Bloch MH. “Meta-analysis: melatonin for the treatment of primary sleep disorders.” PLoS One. 2013. PMID: 23691095
- Cruz-Sanabria F, et al. “Optimizing the Time and Dose of Melatonin as a Sleep-Promoting Drug: A Systematic Review of Randomized Controlled Trials and Dose-Response Meta-Analysis.” J Pineal Res. 2024. PMID: 38888087
- Menczel Schrire Z, et al. “Safety of higher doses of melatonin in adults: A systematic review and meta-analysis.” J Pineal Res. 2022. PMID: 34923676
- Sateia MJ, et al. “Clinical Practice Guideline for the Pharmacologic Treatment of Chronic Insomnia in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline.” J Clin Sleep Med. 2017. PMID: 27998379
- Erland LAE, Saxena PK. “Melatonin Natural Health Products and Supplements: Presence of Serotonin and Significant Variability of Melatonin Content.” J Clin Sleep Med. 2017. PMID: 27855744
- Cohen PA, et al. “Quantity of Melatonin and CBD in Melatonin Gummies Sold in the US.” JAMA. 2023. PMID: 37097362
- Lelak K, et al. “Pediatric Melatonin Ingestions - United States, 2012-2021.” MMWR Morb Mortal Wkly Rep. 2022. PMID: 35653284
- NIH Office of Dietary Supplements. Dietary Supplement Label Database. dsld.od.nih.gov (labels retrieved 2026-08-28).