GNC Melatonin 3 mg supplement bottle
GNC

Melatonin 3 mg

What We Researched
3 active ingredients analyzed · 4 inactive ingredients decoded · 5 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
83
Product Score Good
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B6 (as Pyridoxine Hydrochloride) 2 mg 118%
Calcium 45 mg 3%
Melatonin 3 mg
Bioavailability Good

Absorption Rating

  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Calcium Good
  • Melatonin Fair
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • Microcrystalline Cellulose
  • Stearic Acid
  • Magnesium Stearate
Efficacy Good

Dosage Analysis

  • Vitamin B6 (as Pyridoxine Hydrochloride) 2 mg Effective
  • Calcium 45 mg Under-dosed
  • Melatonin 3 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B6 (as Pyridoxine Hydrochloride) 2 mg 118%
Calcium 45 mg 3%
Melatonin 3 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$19$18$17$16$15 Mar 12 $16.99
GNC

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
GNC

Founded 1935 · Pittsburgh, Pennsylvania, USA · 200 products · gnc.com

Certifications

5 certifications
Informed Sport Verified Source
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Claimed
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Frequently Asked Questions
Is GNC Melatonin 3 mg a good supplement?

GNC Melatonin 3 mg received a product quality score of 83/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 3 active ingredients All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, GNC, holds a brand trust score of 88/100 with 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic.

What are the ingredients in GNC Melatonin 3 mg?

GNC Melatonin 3 mg contains 3 active ingredients: Vitamin B6 (as Pyridoxine Hydrochloride) (2 mg), Calcium (45 mg), Melatonin (3 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Melatonin 3 mg safe to take?

GNC Melatonin 3 mg has been analyzed for ingredient safety across all its components. All 4 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is GNC a trustworthy supplement brand?

GNC receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 200 products in their lineup. They hold 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.