Kirkman Labs Melatonin Extended Release, 150 Tablets supplement bottle
Kirkman Labs

Melatonin Extended Release, 150 Tablets

What We Researched
3 active ingredients analyzed · 7 inactive ingredients decoded · 1 brand certification checked · 3 retailers compared · Last updated: Mar 2026
75
Product Score Fair
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Each Serving Contains Amount Per Serving %Daily Value
Calcium (from Calcium Carbonate) 132 mg 10%
Melatonin 2.5 mg **
Bioavailability Fair

Absorption Rating

  • Each Serving Contains Fair
  • Calcium (from Calcium Carbonate) Fair
  • Melatonin Fair
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Water
  • Purified
  • Stearic Acid
  • Citric Acid
  • Silicon Dioxide
  • Sodium Glycolate
Efficacy Fair

Dosage Analysis

  • Calcium (from Calcium Carbonate) 132 mg Under-dosed
  • Melatonin 2.5 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Each Serving Contains Amount Per Serving %Daily Value
Calcium (from Calcium Carbonate) 132 mg 10%
Melatonin 2.5 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Water Safe

Dissolves and carries water-soluble ingredients.

Purified Unknown
Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Sodium Glycolate Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$40$39$38$37$36 Mar 12 $38.00
iHerb

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

Brand Trust Report
Kirkman Labs

Founded 1949 · Lake Oswego, Oregon, U.S. · 74 products · kirkmangroup.com

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
Testing Lab Disclosure — Claimed Source
In House Testing — Verified Source

Violation History

1 incident
Fda Warning Marketing unapproved new drugs and misbranded drugs (sodium fluoride products).2016-01-13Source
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Frequently Asked Questions
Is Kirkman Labs Melatonin Extended Release, 150 Tablets a good supplement?

Kirkman Labs Melatonin Extended Release, 150 Tablets received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 3 active ingredients Of the 7 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Kirkman Labs, holds a brand trust score of 81/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Kirkman Labs Melatonin Extended Release, 150 Tablets?

Kirkman Labs Melatonin Extended Release, 150 Tablets contains 3 active ingredients: Each Serving Contains (Amount Per Serving), Calcium (from Calcium Carbonate) (132 mg), Melatonin (2.5 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Kirkman Labs Melatonin Extended Release, 150 Tablets safe to take?

Kirkman Labs Melatonin Extended Release, 150 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 Kirkman Labs a trustworthy supplement brand?

Kirkman Labs receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1949 and headquartered in Lake Oswego, Oregon, U.S., the company offers 74 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. Note: Kirkman Labs has 1 historical regulatory incident on record, which are factored into the trust score.

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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.