Natural Factors Stress-Relax Ashwagandha 600 mg supplement bottle
Natural Factors

Stress-Relax Ashwagandha 600 mg Review

What We Researched
1 active ingredient analyzed · 9 inactive ingredients decoded · 5 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
100
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Organic KSM-66 Ashwagandha® Extract (Withania somnifera) (root) (5% withanolides) 600 mg
Bioavailability Excellent

Absorption Rating

  • Organic KSM-66 Ashwagandha® Extract (Withania somnifera) (root) (5% withanolides) Good
Other Ingredients Excellent

Fillers & Additives

  • Pullulan
  • Sunflower Oil
  • Magnesium Stearate
  • Organic Rice Hull
  • Organic Rice Extract
  • Organic Gum Arabic
  • Tapioca Maltodextrin
  • Rice Powder
  • Purified Water
Efficacy Excellent

Dosage Analysis

  • Organic KSM-66 Ashwagandha® Extract (Withania somnifera) (root) (5% withanolides) 600 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Organic KSM-66 Ashwagandha® Extract (Withania somnifera) (root) (5% withanolides) 600 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Pullulan Safe

Forms plant-based capsule shells. Fully fermentation-derived.

Sunflower Oil Safe

Helps dissolve and absorb fat-soluble vitamins.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Organic Rice Hull Safe

It is used to improve powder flow during manufacturing.

Organic Rice Extract Generally_safe

It is added for its potential health benefits.

Organic Gum Arabic Generally_safe

It is used as a thickener, emulsifier, or stabilizer.

Tapioca Maltodextrin Generally_safe

It is used as a filler or binder.

Rice Powder Safe

It is used as a filler or flow agent.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Brand Trust Report
Natural Factors

Founded 1950 · Coquitlam, British Columbia, Canada · 832 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
Related Supplements
Frequently Asked Questions
Is Natural Factors Stress-Relax Ashwagandha 600 mg a good supplement?

Natural Factors Stress-Relax Ashwagandha 600 mg received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 30 servings per container. Of the 9 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 100/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in Natural Factors Stress-Relax Ashwagandha 600 mg?

Natural Factors Stress-Relax Ashwagandha 600 mg contains 1 active ingredients: Organic KSM-66 Ashwagandha® Extract (Withania somnifera) (root) (5% withanolides) (600 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Factors Stress-Relax Ashwagandha 600 mg safe to take?

Natural Factors Stress-Relax Ashwagandha 600 mg 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 100/100 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 832 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 — read our methodology. 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.