10 Best Melatonin Third Party Tested of 2025

Tested and Reviewed: Top 10 Melatonin Third Party Tested deals with expert ratings from 8.1 to a perfect 10

May 2026 Edition

Editor's Choice

9.7

Nutricost

Nutricost Melatonin 5mg, 240 Capsules - 5mg Per Serving, Non-GMO, Gluten Free

Editor's bottom line:

“This melatonin third party tested is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

High Quality, High Potency Melatonin
240 Capsules of Melatonin Per Bottle
5mg of Melatonin Per Serving (240 Servings)
Non-GMO and Gluten Free Formula
Made in a GMP Compliant, FDA Registered Facility

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Picked by 397 people today

9.5

Nutricost

Nutricost Melatonin 5mg, 240 Tablets - 5mg Per Serving, Non-GMO, Gluten Free

Main Highlights

Easy-To-Swallow Melatonin Tablets
240 Tablets of Melatonin Per Bottle
5mg of Melatonin Per Serving (240 Servings)
GMO-free and Gluten Free
Made in a NSF Certified, GMP Compliant, FDA Registered Facility

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9.5

THORNE

THORNE - Melaton-3-3 mg Melatonin Supplement - Supports Normal Circadian Rhythms, Restful Sleep & Relaxation* - NSF Certified for Sport - Gluten, Dairy & Soy-Free - 60 Capsules

Main Highlights

Melatonin: Supports restful sleep patterns*
Circadian Rhythms: Helps maintain normal circadian rhythms*
Jet Lag: Provides a benefit for shift workers and travelers with jet lag*
NSF Certified for Sport: Tested for compliance with label claims and to ensure the absence of nearly 300 substances banned by many major athletic organizations
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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9.2

Nature Made

Nature Made Melatonin 3mg Sleep Aids for Adults, 100% Drug Free Sleep Aid, Sleep Supplements, 240 Tablets, 240 Day Supply

Main Highlights

Adults take one of these Melatonin 3mg sleep supplements one hour before bedtime with water
Occasional use sleep support supplement: Contains one 240 count bottle of Nature Made Melatonin 3 mg Tablets, a nighttime sleep aid
These Nature Made Melatonin Tablets are 100% drug free, gluten free, non habit forming, have no color added, no artificial flavors, and no preservatives
Melatonin is a hormone found naturally in the body that helps to regulate sleep and wake cycles
Each Nature Made 3mg Melatonin Tablet helps you fall asleep faster and supports restful sleep with a lower dose Melatonin tablet
United States Pharmacopeia (USP) Verified; #1 Pharmacist Recommended Vitamin & Supplement Brand*
These statements have not been evaluated by the Food and Drug Administration; this product is not intended to diagnose, treat, cure, or prevent any disease

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9.0

Pure Encapsulations

Pure Encapsulations Melatonin 3 mg - Antioxidant Supplement to Support Natural Sleeping & Relief of Occasional Sleeplessness - for Natural Sleep Support* - 60 Capsules

Main Highlights

Melatonin Supports Sleep Cycle: Melatonin helps facilitate the natural functioning of the pineal gland to support the body's sleep and wake cycle*
Restful Sleep Support: Aids relaxation in the body for restful sleep; designed to assist in the duration of sleep to help support your natural sleep cycle*
Pineal Gland Support: Melatonin is a hormone produced by the pineal gland and is secreted in a circadian rhythm by enzymes that are activated by darkness*
Pure Quality: Our supplements are made with premium ingredients sourced from trusted suppliers and guided by nutritional experts, then manufactured and tested to verify potency and purity*
Pure Difference: What we leave out matters, too; Pure Encapsulations products are free from common allergens, artificial or unnecessary ingredients, and GMOs

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8.8

Natrol

Natrol 10 mg Melatonin Gummies, Sleep Support for Adults, Melatonin Supplements for Sleeping, 90 Strawberry-Flavored Gummies, 45 Day Supply

Main Highlights

FALL ASLEEP FASTER (1): Enjoy a better night's sleep with melatonin 10mg gummies for adults, featuring gummy melatonin 10mg that promotes sleep in as little as 15 minutes and supports occasional sleeplessness (1)
STAY ASLEEP LONGER (1): Featuring 10 mg melatonin gummies per serving, these sleep gummies help you stay asleep longer so you wake up feeling refreshed and revitalized(1)
100% DRUG-FREE SLEEP SUPPLEMENT: Natrol melatonin gummies for adults are 100% drug-free, non-habit forming, vegetarian, gelatin-free; Natrol melatonin 10mg gummies do not contain synthetic dyes, artificial flavors or sweeteners
DELICIOUS TASTING MELATONIN GUMMIES: Pectin-based Natrol 10mg melatonin with a delicious strawberry flavor and soft texture, making these 10mg gummy melatonin sleep supplements easy and delicious to take
#1 DRUG FREE SLEEP AID SUPPLEMENT BRAND IN AMERICA(2): Natrol adult melatonin gummies 10 mg from the leading drug-free aid supplement brand help manage sleep and wake cycles for a better nights rest(1)

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8.6

Pure Encapsulations

Pure Encapsulations Melatonin-SR - Extended Release Melatonin - Supports Restful Sleep* - Sleep Supplement - Gluten Free & Vegan - 60 Capsules

Main Highlights

Sleep Support: Our Pure Encapsulations Melatonin-SR ensures prolonged absorption for a 6-hour sleep supplement support*
Restful Sleep Support: Melatonin SR aids relaxation and sleep patterns to support a peaceful nights sleep*
Pure Ingredients for Natural Support: Supports the body's circadian rhythm and endocrine secretions for high-quality gluten-free sleep supplementation*
Suggested Use: As a dietary supplement, take 1 sleep supplement capsule 30-60 minutes before bedtime
Pure Difference: What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs

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8.3

Pure Encapsulations

Pure Encapsulations Melatonin 20 mg - Not Intended for Sleep Support - for Immune System & Healthy Cells - 99.5% Purity Melatonin - Gluten Free & Non-GMO - 60 Capsules

Main Highlights

Immunity Support:This melatonin formula is intended to support overall health and wellness, including immune system function*
Not Intended for Sleep Support: This melatonin is designed to specifically support healthy cells and tissues; may support colon, breast, prostate and lung tissue*
Highest Purity Melatonin: Melatonin in this formula has a purity of 99.5%, the highest purity available
Gluten Free & Non GMO: Pure Encapsulations melatonin is free from gluten and genetically modified organisms, ensuring a pure and natural product
Pure Difference: What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs

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8.1

THORNE

THORNE - Melaton-5-5 mg Melatonin Supplement - Supports Normal Circadian Rhythms, Restful Sleep & Relaxation* - Third-Party Certified - Gluten, Dairy & Soy-Free - 60 Capsules

Main Highlights

Melatonin: Promotes restful sleep patterns*
Circadian Rhythms: Helps maintain normal circadian rhythms*
Jet Lag: Provides a benefit for shift workers and travelers with jet lag*
Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)

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8.1

Natrol

Natrol Melatonin 5mg Fast Dissolve Tablets, Sleep Support Supplements for Adults, Strawberry Flavor, 200 Tablets, Up to 200 Day Supply

Main Highlights

FALL ASLEEP FASTER: Natrol Melatonin 5mg tablets promote falling asleep in as little as 15 minutes (1)
SLEEP SUPPORT: These melatonin chewables help you stay asleep longer through melatonin dissolvable tablets so you wake up refreshed and ready to take on the day ahead (1)
100% DRUG-FREE: Enjoy sleep support with our non-habit forming, 100% drug-free melatonin dissolvable tablets
DELICIOUS TASTING MELATONIN NATROL TABLETS: Fast Dissolve chewable melatonin tablets for adults feature a delicious strawberry flavor and require no water to swallow, making them easy and delicious to take
CONVENIENT FOR BUSY LIFESTYLES: As America's #1drug-free sleep aid brand, take these chewable melatonin 5mg tablets 30 minutes before bedtime for restful sleep support (1,2)

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Our Best Overall Choice

Best Choice

9.7

Nutricost

Nutricost Melatonin 5mg, 240 Capsules - 5mg Per Serving, Non-GMO, Gluten Free

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

High Quality, High Potency Melatonin
240 Capsules of Melatonin Per Bottle
5mg of Melatonin Per Serving (240 Servings)
Non-GMO and Gluten Free Formula
Made in a GMP Compliant, FDA Registered Facility

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