🟡 60/100

Review before taking

  • Melatonin: 20mg is 2.0× the Tolerable Upper Intake Level (10mg)
  • 100% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Melatonin: 20mg is 2.0× the Tolerable Upper Intake Level (10mg)

The safety score is low because the 20mg dose of melatonin is twice the recommended upper limit of 10mg.

Label Data

1 Veg Capsule(s) Serving Size
90 Servings
Non-Nutrient/Non-Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

20 mg
⚠️ Exceeds Tolerable Upper Intake Level by 2.0× (UL: 10 mg) 📚 236 studies (Tier A: 2, B: 109)
This product: 20mg UL 10mg

Other Ingredients

Magnesium Citrate Microcrystalline Cellulose Hypromellose Stearic Acid

Label Claims — Verification

All Other
Structure/Function
All Other (100% of products) Structure/Function (86% of products) Nutrient (7% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Women (not pregnant or lactating) Halal Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested usage: Take 1 capsule near bedtime with water. This product is not intended for long-term use. Use beyond 4 consecutive weeks should be only under the supervision of a healthcare practitioner.

⚠️ Warnings & Precautions

Caution: For adults only at bedtime. This product is not intended for long-term use; use only as directed.

Not for pregnant or nursing women.

May cause drowsiness. Do not use in conjunction with alcoholic beverages, when driving a vehicle, or while operating machinery.

Consult physician if taking medication (especially sedatives and anti-depressants) or have a medical condition (including depression, high blood pressure and epilepsy).

Keep out of reach of children.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

🧪 Formulation Notes

Melatonin is a potent free radical scavenger naturally produced in the pineal gland and present in high amounts in the gastrointestinal tract. It is involved in many of the body, brain and glandular biological functions including regulation of normal sleep/wake cycles, regulation of the immune system and maintenance of a healthy gastrointestinal lining.

Natural color variation may occur in this product.

Maximum strength Healthy sleep cycle Free radical scavenger Gastrointestinal support

Non-GMO

Vegetarian/Vegan

Made in Canada with globally sourced ingredients.

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.

NOW Maximum Strength Melatonin 20 mg has four times the Melatonin as in our 5 mg product.

Crescent H (Halal)

Additional Information

Store in a cool, dry place after opening.

General Health Family owned since 1968.

GMP Quality Assured Crescent H (Halal)

This bottle is made from 100% PCR (post-consumer recycled) resin.

Product Details

UPC / SKU 7 33739 03558 5
DSLD Entry Date 2024-05-23
Product Type Non-Nutrient/Non-Botanical
Form Capsule
Brand NOW
DSLD ID 313769
Data Updated 2026-04-11

Research Evidence

291 Research Sources
55 Avg Quality Score
129 Meta Analysis
93 Systematic Review
51 Rct
11 Clinical Trial
2 Other
2 Regulatory Source
1 Openfda Safety
A Interventions for preventing delirium in hospitalised non-ICU patients
Meta Analysis The Cochrane database of systematic reviews 2016
A Melatonin for preoperative and postoperative anxiety in adults
Meta Analysis The Cochrane database of systematic reviews 2020
A Effect of melatonin on quality of life and symptoms in patients with cancer: a systematic review and meta-analysis of randomised controlled trials
Meta Analysis BMJ open 2022
B Pharmacological interventions for prevention of weight gain in people with schizophrenia
Meta Analysis The Cochrane database of systematic reviews 2022
B Melatonin for pre- and postoperative anxiety in adults
Meta Analysis The Cochrane database of systematic reviews 2015
B Prevention of depression in adults with long-term physical conditions
Meta Analysis The Cochrane database of systematic reviews 2021
B Comparative effects of pharmacological interventions for the acute and long-term management of insomnia disorder in adults: a systematic review and network meta-analysis
Systematic Review Lancet (London, England) 2022
B Does melatonin administration reduce the incidence of postoperative delirium in adults? Systematic review and meta-analysis
Meta Analysis BMJ open 2023
B Second-generation antidepressants for preventing seasonal affective disorder in adults
Meta Analysis The Cochrane database of systematic reviews 2015
B Interventions for preventing type 2 diabetes in adults with mental disorders in low- and middle-income countries
Meta Analysis The Cochrane database of systematic reviews 2021
View all evidence for Melatonin →

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