PLANTFUL RESEARCH Thyroid supplement bottle
What We Researched
14 active ingredients analyzed · 5 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
84
Product Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B-12 (as cyanocobalamin) 100 mcg 4167%
Iodine (from kelp/potassium iodide) 150 mcg 100%
Magnesium (as oxide) 200 mg 48%
Zinc (as oxide) 8 mg 73%
Selenium (as amino acid chelate) 200 mcg 364%
Copper (as oxide) 0.2 mg 22%
Manganese (as amino acid chelate) 2 mg 87%
Molybdenum (as amino acid chelate) 50 mcg 111%
L-Tyrosine 300 mg
Schisandra Powder (fruit) 240 mg
Ashwagandha Root Powder 200 mg
Bladderwrack Powder (Thallus) 50 mg
Cayenne Pepper Powder (fruit) 30 mg
Kelp 38 mg
Bioavailability Good

Absorption Rating

  • Vitamin B-12 (as cyanocobalamin) Fair
  • Iodine (from kelp/potassium iodide) Good
  • Magnesium (as oxide) Good
  • Zinc (as oxide) Fair
  • Selenium (as amino acid chelate) Good
  • Copper (as oxide) Fair
  • Manganese (as amino acid chelate) Good
  • Molybdenum (as amino acid chelate) Good
  • L-Tyrosine Good
  • Schisandra Powder (fruit) Good
  • Ashwagandha Root Powder Poor
  • Bladderwrack Powder (Thallus) Fair
  • Cayenne Pepper Powder (fruit) Fair
  • Kelp Fair
Other Ingredients Excellent

Fillers & Additives

  • Rice Flour
  • Gelatin (Bovine)
  • Vegetable Magnesium Stearate
  • Silicone Dioxide
  • Chlor ophyll
Efficacy Good

Dosage Analysis

  • Vitamin B-12 (as cyanocobalamin) 100 mcg Effective
  • Iodine (from kelp/potassium iodide) 150 mcg Effective
  • Magnesium (as oxide) 200 mg Effective
  • Zinc (as oxide) 8 mg Effective
  • Selenium (as amino acid chelate) 200 mcg Effective
  • Copper (as oxide) 0.2 mg Under-dosed
  • Manganese (as amino acid chelate) 2 mg Effective
  • Molybdenum (as amino acid chelate) 50 mcg Effective
  • L-Tyrosine 300 mg Under-dosed
  • Schisandra Powder (fruit) 240 mg Under-dosed
  • Ashwagandha Root Powder 200 mg Under-dosed
  • Cayenne Pepper Powder (fruit) 30 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B-12 (as cyanocobalamin) 100 mcg 4167%
Iodine (from kelp/potassium iodide) 150 mcg 100%
Magnesium (as oxide) 200 mg 48%
Zinc (as oxide) 8 mg 73%
Selenium (as amino acid chelate) 200 mcg 364%
Copper (as oxide) 0.2 mg 22%
Manganese (as amino acid chelate) 2 mg 87%
Molybdenum (as amino acid chelate) 50 mcg 111%
L-Tyrosine 300 mg
Schisandra Powder (fruit) 240 mg
Ashwagandha Root Powder 200 mg
Bladderwrack Powder (Thallus) 50 mg
Cayenne Pepper Powder (fruit) 30 mg
Kelp 38 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Gelatin (Bovine) Safe

It is used to make capsules.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Silicone Dioxide Generally_safe

It is used as a flow agent to prevent clumping and improve powder flow.

Chlor ophyll Unknown

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
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Frequently Asked Questions
Is PLANTFUL RESEARCH Thyroid a good supplement?

PLANTFUL RESEARCH Thyroid received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 14 active ingredients with 30 servings per container. Of the 5 inactive ingredients, 3 are rated safe and 0 are flagged for review.

What are the ingredients in PLANTFUL RESEARCH Thyroid?

PLANTFUL RESEARCH Thyroid contains 14 active ingredients: Vitamin B-12 (as cyanocobalamin) (100 mcg), Iodine (from kelp/potassium iodide) (150 mcg), Magnesium (as oxide) (200 mg), Zinc (as oxide) (8 mg), Selenium (as amino acid chelate) (200 mcg), Copper (as oxide) (0.2 mg), and 8 more. Notable high-dose ingredients include Vitamin B-12 at 4167% DV, Selenium at 364% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is PLANTFUL RESEARCH Thyroid safe to take?

PLANTFUL RESEARCH Thyroid 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.

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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.