Natural Factors Alpha-Lipoic Acid, 400 mg, 60 Capsules supplement bottle
Natural Factors

Alpha-Lipoic Acid, 400 mg, 60 Capsules

What We Researched
2 active ingredients analyzed · 6 inactive ingredients decoded · 5 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
75
Product Score Fair
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium (dicalcium phosphate) 40 mg 3%
Alpha-Lipoic Acid 400 mg **
Bioavailability Fair

Absorption Rating

  • Calcium (dicalcium phosphate) Fair
  • Alpha-Lipoic Acid Fair
Other Ingredients Excellent

Fillers & Additives

  • Gelatin Capsule (Gelatin, Purified Water)
  • Microcrystalline Cellulose
  • Magnesium Silicate
  • Magnesium Stearate (Vegetable Grade)
  • Stearic Acid
  • Silica
Efficacy Fair

Dosage Analysis

  • Calcium (dicalcium phosphate) 40 mg Under-dosed
  • Alpha-Lipoic Acid 400 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calcium (dicalcium phosphate) 40 mg 3%
Alpha-Lipoic Acid 400 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Capsule (Gelatin, Purified Water) Safe

It is used to encapsulate supplement ingredients.

Microcrystalline Cellulose Safe

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

Magnesium Silicate Generally_safe

It is used to improve powder flow and prevent clumping.

Magnesium Stearate (Vegetable Grade) Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

iHerb $16.77
Best Price
Vitacost $16.77

Price History

Tracked across major retailers. Updated periodically.

$19$18$17$16$15 Mar 12 $16.77$16.77
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
Natural Factors

Founded 1950 · Coquitlam, British Columbia, Canada · 390 products · naturalfactors.com

Certifications

5 certifications
B Corp Certified Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-10-31Source
Recall Hi Potency B Complex, RevitalX, Super Multi® IRON FREE2024-07-19Source
Lawsuit Products labeled as containing glucosamine sulfate did not contain the ingredient.2021Source
Prop 65 Lead2016-01-13Source
Recall Natural Factors L-Arginine 500mg2006-04-05Source
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Frequently Asked Questions
Is Natural Factors Alpha-Lipoic Acid, 400 mg a good supplement?

Natural Factors Alpha-Lipoic Acid, 400 mg, 60 Capsules received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients Of the 6 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 88/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in Natural Factors Alpha-Lipoic Acid, 400 mg?

Natural Factors Alpha-Lipoic Acid, 400 mg contains 2 active ingredients: Calcium (dicalcium phosphate) (40 mg), Alpha-Lipoic Acid (400 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Factors Alpha-Lipoic Acid, 400 mg safe to take?

Natural Factors Alpha-Lipoic Acid, 400 mg, 60 Capsules 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 Natural Factors a trustworthy supplement brand?

Natural Factors receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1950 and headquartered in Coquitlam, British Columbia, Canada, the company offers 390 products in their lineup. They hold 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Factors has 5 historical regulatory incidents 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.