Crystal Star Muscle Relax supplement bottle
Crystal Star

Muscle Relax

What We Researched
1 active ingredient analyzed · 2 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
62
Product Score Fair
62
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Proprietary Herbal Blend 2.2 g †
Bioavailability Fair

Absorption Rating

  • Proprietary Herbal Blend Fair
Other Ingredients Excellent

Fillers & Additives

  • certified organic Brown Rice
  • Vegetarian Capsule
Efficacy Very Poor

Dosage Analysis

  • Proprietary Herbal Blend 2.2 g Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Proprietary Herbal Blend 2.2 g †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

certified organic Brown Rice Unknown
Vegetarian Capsule Safe

It is used as a vegetarian capsule shell material.

Price Comparison

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

Brand Trust Report
Crystal Star

Founded 1978 · Alhambra, CA 91802 · 21 products · crystalstar.com/

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

3 incidents
Fda Warning Misbranding of products 'Women's Best Friend' and 'Para Purge' as drugs, and violations of Current Good Manufacturing Practice (cGMP) regulations for dietary supplements.2018-08-15Source
Fda Warning Misbranding of the product 'Withdrawal Support' as a drug due to claims that it could cure, mitigate, treat, or prevent disease.2018-01-11Source
Prop 65 Lead2015-04-10Source
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Frequently Asked Questions
Is Crystal Star Muscle Relax a good supplement?

Crystal Star Muscle Relax received a product quality score of 62/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients with 15 servings per container. Of the 2 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, Crystal Star, holds a brand trust score of 62/100.

What are the ingredients in Crystal Star Muscle Relax?

Crystal Star Muscle Relax contains 1 active ingredients: Proprietary Herbal Blend (2.2 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Crystal Star Muscle Relax safe to take?

Crystal Star Muscle Relax 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 Crystal Star a trustworthy supplement brand?

Crystal Star receives a brand trust score of 62/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1978 and headquartered in Alhambra, CA 91802, the company offers 21 products in their lineup. Note: Crystal Star has 3 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.