2.1%
In 2017 to 2018, 2.1% of adults in the United States reported taking melatonin in the past 30 days, up from 0.4% in 1999 to 2000.[1]
“I feel clear headed and focused in the morning, and keep my energy for the afternoon.”*
Sleep education hub · Data reference
Melatonin use among adults in the United States rose more than fivefold from 1999 to 2018.[1] Yet in lab tests, 22 of 25 melatonin gummies did not match their labels.[2] And reports of children swallowing melatonin rose 530% in a decade.[3]
This page collects the most cited melatonin numbers, traces each one to its original study, and dates it. Every stat has its own link you can copy.
2.1%
In 2017 to 2018, 2.1% of adults in the United States reported taking melatonin in the past 30 days, up from 0.4% in 1999 to 2000.[1]
0.28%
The share of adults taking more than 5 mg of melatonin a day more than tripled, from 0.08% in 2005 to 2006 to 0.28% in 2017 to 2018.[1]
64%
64% of adults in the United States say they have taken melatonin to help them sleep.[4]
4.8 mg
Adults who take melatonin report an average dose of 4.8 mg, and 71.2% take 5 mg or less.[5]
63.4%
63.4% of melatonin users take gummies and 56.6% take pills or tablets. Some take both.[5]
22 of 25
In a lab test of 25 melatonin gummy products, 22 were inaccurately labeled. Melatonin content ranged from 74% to 347% of the labeled amount.[2]
71%
In a lab test of 31 melatonin supplements, more than 71% fell outside 10% of their label claim, ranging from 83% less to 478% more than labeled.[6]
7 minutes
Across 19 trials with 1,683 people, melatonin helped people fall asleep about 7 minutes faster than placebo and sleep about 8 minutes longer.[7]
530%
Pediatric melatonin ingestions reported to United States poison control centers rose 530%, from 8,337 in 2012 to 52,563 in 2021.[3]
18.5%
In a 2023 survey of parents, 18.5% of children ages 5 to 9 and 19.4% of children ages 10 to 13 had taken melatonin in the past 30 days.[8]
Published figures on how many adults take melatonin disagree by a factor of 30. None of them is wrong. They measure different things.
| Estimate | What was asked | Who was asked | Method | Data year |
|---|---|---|---|---|
| 2.1% | Took melatonin in the past 30 days | 55,021 adults age 20 and older across 1999 to 2018 | National probability sample, in home interview, bottles checked for 94% of users[1] | 2017 to 2018 |
| 27% | Use melatonin occasionally or regularly to fall or stay asleep | 2,010 adults | Online poll[9] | 2022 |
| 27.4% | Take melatonin as a sleep aid | Adults in the United States; sample size not reported | Online poll[10] | June 2022 |
| 64% | Have ever taken melatonin to help sleep | 2,005 adults | Online poll[4] | March 2023 |
Three things explain the gap. The time window (past 30 days versus ever) changes the answer the most. Online polls often reach people who use more supplements than a national probability sample does. And the national figure is from 2017 to 2018, before the sharpest rise in sales and in pediatric poison center reports.[3] No newer national estimate had been published as of October 2026.
How to cite it. For "how many adults take melatonin regularly," the 2.1% national figure is the most rigorous. For "how many have ever tried it," use 64% and name the poll.
Evidence grade: observational, preliminary conference abstract
Among about 131,000 adults with insomnia, those with a year or more of recorded melatonin use developed heart failure over five years at a rate of 4.6%, compared with 2.7% of matched nonusers. That is about 90% higher in relative terms and 1.9 percentage points in absolute terms.[16][17]
Hospitalization for heart failure was 19% versus 6.6%, and death from any cause was 7.8% versus 4.3%.[17] The lead author said the study cannot prove cause and effect. Worse insomnia, depression, anxiety or other sleep medicines may explain part of the link.[16]
It depends on how the question is asked. A national survey with checked supplement bottles found 2.1% of adults took melatonin in the past 30 days in 2017 to 2018. Online polls from 2022 and 2023 found 27% use it occasionally or regularly and 64% have ever taken it for sleep.
In a 2022 poll of 1,250 recent users, the average dose was 4.8 mg. Daily users averaged 6 mg. 71.2% took 5 mg or less.
Often not. A 2023 lab test found 22 of 25 gummy products were inaccurately labeled, with melatonin ranging from 74% to 347% of the labeled amount. One product contained no melatonin, only cannabidiol.
A meta analysis of 19 trials found about 7 minutes faster than placebo, with about 8 minutes more total sleep. The authors called the effects modest.
The American Academy of Sleep Medicine 2017 guideline suggests clinicians not use melatonin to treat chronic insomnia in adults. It rated this a weak recommendation.
Long term data in children are limited. A January 2026 review found trials only in children with neurologic conditions such as autism, not in typically developing children. Pediatric poison center reports rose 530% from 2012 to 2021.
That has not been shown. A 2025 conference abstract found heart failure in 4.6% of long term users with insomnia and 2.7% of matched nonusers over five years. The study was observational and preliminary, so it cannot show cause.
In the United States melatonin is sold as a dietary supplement and is not approved by the Food and Drug Administration. It requires a prescription in the United Kingdom, and Canada made it prescription only for sleep use in people under 18 in June 2026.
Every number on this page was checked against the original study, government report or survey method statement. When a news story and the study disagreed, we used the study. Each stat shows the year its data were collected, which is often years before publication. Online polls are labeled as polls. Observational findings are labeled as associations, not causes.
Disclosure. Driffly sells a melatonin product. For that reason this page makes no claims about any product, including ours, and reports findings that are unfavorable to melatonin alongside favorable ones.
Reviewed: quarterly, and whenever a major study or regulatory change is published. When a statistic is replaced, the old figure is noted in the changelog rather than silently removed.
No corrections yet. Spot an error? Email hello@driffly.com and we will fix it and log it here.
October 19, 2026: page first published.
This page reports published research for informational purposes. It is not medical advice. Talk with a health care professional before starting or changing any supplement, and before giving melatonin to a child.
Smith T. Melatonin statistics 2026: use, dosing, label accuracy and safety. Driffly. Updated October 19, 2026. https://driffly.com/pages/melatonin-statistics
Text and charts on this page are free to reuse under a Creative Commons Attribution 4.0 license with a link back to this page. When possible, please also cite the original study.
Media questions: hello@driffly.com
More plain language sleep research: the Driffly sleep education hub.