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13 Melatonin Statistics (2022) - SnoozeUniversity

by Dale Cudmore | Updated: Mar 13, 2022

Melatonin use is at an all time high.

It’s an effective, and relatively safe natural sleep aid with minimal side effects for most people.

Let’s take a look at some stats and trends about melatonin usage and effectiveness.

How Effective is Melatonin?

A meta-analysis of 19 studies found that melatonin decreased the time to fall asleep (sleep latency) by 7.06 minutes on average.

In addition, melatonin also increased total sleep time by 8.25 minutes.

How Many People Use Melatonin?

Approximately 7 million Americans use melatonin each year.

The percentage of Americans using melatonin has risen from just 0.4% in 2000, to 2.1% in 2018.

What’s the Optimum Dosage for Melatonin?

Studies use a wide variety of dosages ranging from 0.1 mg to 10 mg in most cases.

In a review aiming to determine the optimal dosage of melatonin in older adults, researchers concluded that the optimum dosage for older adults is the minimum effective dosage, which typically ranges from 0.3 mg to 2 mg.

How Big is the Melatonin Market?

Melatonin sales continue to increase both in North America and globally.

In the United States, melatonin sales have risen from $285 million in 2016 to $821 million in 2020.

Projections indicate that the global melatonin market will be approximately $2.423 billion in 2026, compared to $1.25 billion in 2020. The American market makes up the majority of global purchasing power for melatonin.

The global market is estimated to have an annual growth rate (CAGR) of 18.1%.

How Popular is Melatonin Compared to Other OTC Sleep Aids?

Melatonin is the number 1 over the counter sleep aid.

One indicator of this is that melatonin supplements make up all of the top 10 best sellers in Amazon’s Herbal & Nutritional Sleep Supplements category.

In addition, CRN’s 2020 annual survey on dietary supplements broke down the popularity of a variety of supplements used among people who have used them:

How Many Melatonin Supplements Don’t Meet Label Claims?

Because melatonin supplements are relatively safe and available over the counter, they aren’t strictly in many countries.

This has led to many low quality supplements entering the market.

A study of 31 brands of melatonin sleep supplements found that many did not meet the specifications on the bottle:

  • 71% of melatonin supplements were not within a 10% margin of the amount specified on the bottle.
  • 26% of melatonin supplements contained serotonin (with no indication on the bottle)

Note that some supplements had more melatonin than claimed, and some had less. Either situation can potentially have a negative impact on efficacy.


  1. Meta-Analysis: Melatonin for the Treatment of Primary Sleep Disorders
  2. Trends in Use of Melatonin Supplements Among US Adults, 1999-2018
  3. Optimal Dosages for Melatonin Supplementation Therapy in Older Adults
  4. Nutritional Outlook
  5. Absolute Reports Pvt Ltd
  6. CRN Survey
  7. Melatonin Natural Health Products and Supplements: Presence of Serotonin and Significant Variability of Melatonin Content

Medical Disclaimer: The information on is not intended to be a substitute for physician or other qualified care. We simply aim to inform people struggling with sleep issues about the nature of their condition and/or prescribed treatment.

About the authorDale is the founder of Snooze University and a sleep researcher. I overcame my sleep issues and now I'd like to help you do the same by summarizing the latest sleep studies for you.