Source Naturals Sleep Science®, Melatonin, 3 mg, 240 Tablets supplement bottle
Source Naturals

Sleep Science®, Melatonin, 3 mg, 240 Tablets

What We Researched
3 active ingredients analyzed · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
58
Product Score Poor
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B-6 (as pyridoxine HCl) 1 mg 59%
Calcium (as dibasic calcium phosphate) 28 mg 2%
Melatonin 3 mg
Bioavailability Fair

Absorption Rating

  • Vitamin B-6 (as pyridoxine HCl) Fair
  • Calcium (as dibasic calcium phosphate) Fair
  • Melatonin Fair
Other Ingredients Fair

Fillers & Additives

No inactive ingredient data available.

Efficacy Poor

Dosage Analysis

  • Vitamin B-6 (as pyridoxine HCl) 1 mg Under-dosed
  • Calcium (as dibasic calcium phosphate) 28 mg Under-dosed
  • Melatonin 3 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B-6 (as pyridoxine HCl) 1 mg 59%
Calcium (as dibasic calcium phosphate) 28 mg 2%
Melatonin 3 mg

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$24$23$22$21$20 Mar 12 $22.05$22.00
iHerb
Vitacost

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

Brand Trust Report
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Source Naturals Sleep Science®, Melatonin a good supplement?

Source Naturals Sleep Science®, Melatonin, 3 mg, 240 Tablets received a product quality score of 58/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 3 active ingredients The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Sleep Science®, Melatonin?

Source Naturals Sleep Science®, Melatonin contains 3 active ingredients: Vitamin B-6 (as pyridoxine HCl) (1 mg), Calcium (as dibasic calcium phosphate) (28 mg), Melatonin (3 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Sleep Science®, Melatonin safe to take?

Source Naturals Sleep Science®, Melatonin, 3 mg, 240 Tablets has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. 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.