Melatonin Overdose Risk Assessment

Melatonin Overdose Risk Assessment: Understanding the Dangers of Excessive Melatonin Use

Melatonin is a hormone that plays a crucial role in regulating our sleep-wake cycles, and it's commonly used as a dietary supplement to help people with sleep disorders. While melatonin is generally considered safe, taking too much of it can lead to a melatonin overdose, which can cause serious side effects and increase the risk of accidents and injuries.

Risks of Melatonin Overdose

Drowsiness, dizziness, and fatigue
Headaches and confusion
Nightmares and hypotension
Tachycardia and hypothermia

A closer look at Melatonin Overdose Risk Assessment — Melatonin Overdose Risk Assessment

It's essential to understand that melatonin overdose can occur even when taking recommended doses, especially in children and adolescents. According to a 2022 study, U.S. sales of melatonin have increased by about 150 percent between 2016 and 2020, making it more accessible and creating a higher risk of overdose.

Long-Term Safety Concerns

While melatonin is considered safe for short-term use, long-term effects are not well-documented. Research suggests that taking high doses of melatonin may increase the risk of side effects, and there is a lack of information on the toxicology of melatonin, which can be a concern for users.

Illustration of Melatonin Overdose Risk Assessment — Melatonin Overdose Risk Assessment

How to Prevent Melatonin Overdose

Follow the recommended dosage instructions carefully
Monitor your body's response to melatonin and adjust the dosage as needed
Consult with a healthcare professional before taking melatonin, especially if you have a medical condition or take other medications
Keep melatonin supplements out of reach of children and teenagers

What to Do in Case of a Melatonin Overdose

Stunning Melatonin Overdose Risk Assessment image — Melatonin Overdose Risk Assessment

If you or someone you know has taken too much melatonin, seek medical attention immediately. In the meantime, you can follow these steps:

Call the national poisoning hotline or a poison control center for guidance
Monitor your vital signs, including heart rate and blood pressure
Provide medical attention immediately if symptoms worsen or if you experience severe side effects

References:

U.S. Department of Health and Human Services, Health Resources and Services Administration, Reducing the Risk of Poisoning with Melatonin. Rockville, Maryland: U.S. Department of Health and Human Services, 2024.
European Medicines Agency. Melatonin assesment report.

📁 Category: Assessment

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pmc.ncbi.nlm.nih.gov

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The Safety of Melatonin in Humans - Clinical Drug Investigation

Exogenousmelatoninhas been investigated as treatment for a number of medical and surgical diseases, demonstrating encouraging results. The aim of this review was to present and evaluate the literature concerning the possible adverse effects and safety of exogenousmelatoninin humans. Furthermore, we provide recommendations concerning the possiblerisksofmelatoninuse in specific patient ...

source: https___link_springer_com

PDFRisk assessment of melatonin - VKM

In 2020, addition of 1 mgmelatoninper day in food supplements to adults (persons over 18 years of age) were permitted by the NFSA. NFSA requested VKM to examine whether daily intake of 0.2 mgmelatoninfor 3-6-years-olds, 0.3 mgmelatoninfor 7-10-years-olds, and 0.5 mgmelatoninfor 11-18-year-olds might constitute a healthrisk.

source: https___vkm_no

Problems in assessment of acute melatonin overdose - PubMed

AbstractMelatoninis sold in the United States as a dietary supplement and is promoted primarily as an aid for insomnia, stress, jet lag, and aging. Cases of acute poisoning have not been reported, partially because of problems inassessmentof toxicity. We report the case of a 66-year-old man who became lethargic and disoriented after taking 24 mgmelatoninto aid relaxation and sleep the ...

source: https___pubmed_ncbi_nlm_nih_gov

Melatonin - Mayo Clinic

Aug 13, 2025Melatoninis a hormone in your body that plays a role in sleep. The production and release ofmelatoninin the brain is connected to time of day, increasing when it's dark and decreasing when it's light.Melatoninproduction declines with age.Melatoninis also available as a supplement, typically as an oral tablet or capsule. Mostmelatoninsupplements are made in a lab.

source: https___www_mayoclinic_org

Is It Possible to Overdose on Melatonin? Here's What to Know

Jan 29, 2025Melatonincan be a successful natural sleep aid. But amelatoninoverdosecan make it harder for you to fall asleep.

source: https___www_healthline_com

Current Insights into the Risks of Using Melatonin as a Treatment for ...

Regulation ofMelatoninIn countries wheremelatoninis available as a dietary supplement, there is ariskof inappropriate use and a lack of medical supervision for potential adverse effects. The majority ofmelatoninconsumption in the US and a substantial proportion in Europe is in the form of a dietary supplement. 2 Pharmacological agents categorized as dietary supplements are not subject ...

source: https___pmc_ncbi_nlm_nih_gov

Melatonin Overdose: What You Should Know - GoodRx

Jan 7, 2026Taking high doses ofmelatoninincreases theriskof side effects. Learn if it's possible tooverdoseonmelatonin, how muchmelatoninto take, and more.

source: https___www_goodrx_com

Melatonin Overdose: Symptoms, Complications, and More

This article will explain therisksand effects ofmelatoninoverdosethat may occur in adults and children. It will also explain other safety concerns related tomelatonin, when to seek medical help, and the outlook ofmelatoninoverdose.

source: https___resources_healthgrades_com

Melatonin: What You Need To Know | NCCIH

Use of over-the-countermelatoninmight place children and teenagers atriskfor accidental or intentionaloverdose. A 2022 study indicated that U.S. sales of melatonin—which is widely available in tablet, capsule, liquid, and gummy formulations—increased by about 150 percent between 2016 and 2020.

source: https___www_nccih_nih_gov

Attempted suicide by Melatonin overdose: Case report and literature ...

Most common side effects ofmelatoninoverdoseare drowsiness, dizziness, fatigue, headache, confusion, nightmare, hypotension, tachycardia and hypothermia. Supportive measures and control of vital signs are essential for an early discharge of the patient.

source: https___pmc_ncbi_nlm_nih_gov

Case report on melatonin overdose: Cause and concern

Dec 1, 2024Highlights •Melatonin, an endogenous hormone, is used for sleep disorders but lacks clear dosing guidelines. • A 16-year-old male overdosed on 900mg ofmelatoninand benzodiazepines, obtained online without prescription. • The case underscores risingmelatoninabuse due to easy access. • Despite low toxicity potential, side effects and fatalities are concerning. • Tighter ...

source: https___www_sciencedirect_com

Melatonin Overdose - WebMD

Jun 21, 2024Melatoninis a hormone that your body naturally makes. It comes in an OTC sleep aid. It's safe but could cause side effects if you take too much.

source: https___www_webmd_com

What Happens to Your Body if You Take Too Much Melatonin?

Sep 30, 2025Taking too muchmelatoninmay cause dizziness, headaches, and more. Learn about dosages, symptoms, and safety tips formelatoninuse.

source: https___www_verywellhealth_com

Melatonin: Side Effects & Dosage Guide for Sleep - Drugs.com

Feb 18, 2026Learn whatmelatoninis, how it helps with sleep, recommended adult and child doses, common side effects, and long-term safety considerations.

source: https___www_drugs_com

Melatonin side effects: What are the risks? - Mayo Clinic

Dec 16, 2025Melatoninis generally safe for short-term use. More research is needed to better understand its safety and usefulness over the long term. Unlike many sleep medicines, withmelatonin, you are unlikely to become dependent on it or see reduced effectiveness over time. The most commonmelatoninside effects include: Headache. Dizziness. Nausea. Daytime drowsiness. Other, less commonmelatonin...

source: https___www_mayoclinic_org

Safety of higher doses of melatonin in adults: A systematic ... - PubMed

Melatoninis commonly used for sleep and jetlag at low doses. However, there is less documentation on the safety of higher doses, which are being increasingly used for a wide variety of conditions, including more recently COVID-19 prevention and treatment. The aim of this review was to investigate t …

source: https___pubmed_ncbi_nlm_nih_gov

Home Page: Mayo Clinic Proceedings

This analysis indicated that replacing free sugar, starch, saturated fatty acid, and animal protein with non-free sugar and plant protein could potentially lower type 2 diabetesrisk, independent of adiposity.

source: https___www_mayoclinicproceedings_org

Took too much melatonin? Effects and interactions - Poison Control

Melatoninoccurs naturally in the body and is involved in the natural regulation of sleep.Melatoninis sometimes used as a dietary supplement to help people sleep. Like other dietary supplements, there are few studies that have examined its effectiveness. Toxicity frommelatoninappears to be mild.

source: https___www_poison_org

PDFPOISONING WITH MELATONIN - poisonhelp.hrsa.gov

Suggested Citation: U.S. Department of Health and Human Services, Health Resources and Services Administration, Reducing theRiskof Poisoning withMelatonin. Rockville, Maryland: U.S. Department of Health and Human Services, 2024.

source: https___poisonhelp_hrsa_gov

The short-term and long-term adverse effects of melatonin treatment in ...

According to the Europeanassessmentreport, 22 a potential long-term adverse event ofmelatonintreatment is theriskof delayed puberty, mainly due to concerns thatmelatonintreatment may disturb the gradual hormonal decline inmelatoninplasma concentrations detected before the onset of puberty in normal development.

source: https___www_thelancet_com

An upsurge in melatonin overdose: case reports - SAGE Journals

IntroductionMelatonin(N-acetyl-5-methoxytryptamine) is an endogenous neurohormone produced from tryptophan in the pineal gland and secreted during darkness, facilitating sleep and regulating our sleep-wake circadian rhythms.1-3 It has been called the "hormone of darkness".1 Because of its "hypnotic" effect, exogenous formulations are commonly used for treatment of sleep disorder and jetlag.1 ...

source: https___journals_sagepub_com

Toxicology of melatonin - PubMed

Despite the fact thatmelatoninhas been released for public use in the United States by the Food and Drug Administration and is available over the counter nationwide, there currently is a total lack of information on the toxicology ofmelatonin. In Europe,melatoninhas a completely different statu …

source: https___pubmed_ncbi_nlm_nih_gov

Melatonin Overdose Risks and Prevention Strategies

Oct 30, 2025Melatoninoverdoseis rare but rising, especially in children. Learn the symptoms,riskfactors, and how to preventmelatoninoverdose.

source: https___recovered_org

How Safe Is Melatonin, and How Does the Sleep Aid Work? Experts Explain ...

Nov 19, 2025Melatoninsupplements have become a ubiquitous sleep aid, but research shows that benefits are modest, and the heart health effects of long-term use are unknown

source: https___www_scientificamerican_com

Can You Overdose on Melatonin? - Sleep Foundation

Aug 29, 2025Melatoninis one of the most popular sleep aids. In fact, in a recent Sleep Foundation survey, it topped the list of sleep aids, with 58% of respondents reporting they had previously usedmelatonin. And though it's been found generally safe with few serious side effects , there's still ariskofmelatoninoverdoseif you take too much.

source: https___www_sleepfoundation_org

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