Biotics Research Thyrostim supplement bottle
Biotics Research

Thyrostim Review

What We Researched
11 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
91
Product Score Excellent
64
Brand Score Fair

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
Vitamin A (as retinyl acetate) 750 mcg RAE 83%
Iodine (from kelp and potassium iodide) 150 mcg 100%
Magnesium (as magnesium aspartate, gluconate and glycinate) 100 mg 24%
Selenium (from vegetable culture †) 50 mcg 91%
Copper (as copper gluconate) 1 mg 111%
Manganese (as manganese gluconate) 2 mg 87%
Rubidium (from vegetable culture †) 25 mcg
Lamb Pituitary/Hypothalamus Complex Concentrate (from ovine) 40 mg
Lactobacillus acidophilus 2 million
Tyrosine (as L-Tyrosine) 100 mg
Tyrosinase 500 (from mushroom) 20 mcg
Bioavailability Excellent

Absorption Rating

  • Vitamin A (as retinyl acetate) Good
  • Iodine (from kelp and potassium iodide) Good
  • Magnesium (as magnesium aspartate, gluconate and glycinate) Good
  • Selenium (from vegetable culture †) Good
  • Copper (as copper gluconate) Good
  • Manganese (as manganese gluconate) Good
  • Rubidium (from vegetable culture †) Fair
  • Lamb Pituitary/Hypothalamus Complex Concentrate (from ovine) Fair
  • Lactobacillus acidophilus Good
  • Tyrosine (as L-Tyrosine) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetable culture†
  • Modified Cellulose
  • Stearic Acid (Vegetable Source)
  • Magnesium Stearate (Vegetable Source)
  • Food Glaze
Efficacy Very Good

Dosage Analysis

  • Vitamin A (as retinyl acetate) 750 mcg RAE Effective
  • Iodine (from kelp and potassium iodide) 150 mcg Effective
  • Magnesium (as magnesium aspartate, gluconate and glycinate) 100 mg Under-dosed
  • Selenium (from vegetable culture †) 50 mcg Effective
  • Copper (as copper gluconate) 1 mg Effective
  • Manganese (as manganese gluconate) 2 mg Effective
  • Lactobacillus acidophilus 2 million Effective
  • Tyrosine (as L-Tyrosine) 100 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (as retinyl acetate) 750 mcg RAE 83%
Iodine (from kelp and potassium iodide) 150 mcg 100%
Magnesium (as magnesium aspartate, gluconate and glycinate) 100 mg 24%
Selenium (from vegetable culture †) 50 mcg 91%
Copper (as copper gluconate) 1 mg 111%
Manganese (as manganese gluconate) 2 mg 87%
Rubidium (from vegetable culture †) 25 mcg
Lamb Pituitary/Hypothalamus Complex Concentrate (from ovine) 40 mg
Lactobacillus acidophilus 2 million
Tyrosine (as L-Tyrosine) 100 mg
Tyrosinase 500 (from mushroom) 20 mcg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetable culture† Unknown
Modified Cellulose Safe

Creates vegetarian capsule shells with controlled dissolution.

Stearic Acid (Vegetable Source) Generally_safe

It is used as a lubricant and release agent.

Magnesium Stearate (Vegetable Source) Generally_safe

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

Food Glaze Generally_safe

It is used to improve the appearance and protect the supplement.

Brand Trust Report
Biotics Research

Founded 1976 · Rosenberg, Texas, United States · 146 products · bioticsresearch.com

Certifications

1 certification
NSF Certified Verified

Transparency

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

Violation History

5 incidents
Prop 65 Lead2024-07-24Source
Prop 65 Lead2024-03-18Source
Prop 65 Lead2013-01-18Source
Recall Hydrozyme and HCl-Plus2001-07-31Source
Lawsuit The FDA alleged that Biotics Research's product 'Interferon-Plus' was an unapproved new drug and biologic being marketed in violation of federal law.1983Source
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Frequently Asked Questions
Is Biotics Research Thyrostim a good supplement?

Biotics Research Thyrostim received a product quality score of 91/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 11 active ingredients with 135 servings per container. Of the 5 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, Biotics Research, holds a brand trust score of 64/100 with 1 verified certifications including NSF Certified.

What are the ingredients in Biotics Research Thyrostim?

Biotics Research Thyrostim contains 11 active ingredients: Vitamin A (as retinyl acetate) (750 mcg RAE), Iodine (from kelp and potassium iodide) (150 mcg), Magnesium (as magnesium aspartate, gluconate and glycinate) (100 mg), Selenium (from vegetable culture †) (50 mcg), Copper (as copper gluconate) (1 mg), Manganese (as manganese gluconate) (2 mg), and 5 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Biotics Research Thyrostim safe to take?

Biotics Research Thyrostim 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 Biotics Research a trustworthy supplement brand?

Biotics Research receives a brand trust score of 64/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1976 and headquartered in Rosenberg, Texas, United States, the company offers 146 products in their lineup. They hold 1 verified certifications including NSF Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Biotics Research 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.