Nature's Craft Thyroid Support, 120 Capsules supplement bottle
Nature's Craft

Thyroid Support, 120 Capsules

What We Researched
14 active ingredients analyzed · 5 inactive ingredients decoded · 3 retailers compared · Last updated: Mar 2026
80
Product Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B-12 (as Cyanocobalamin) 100 mcg 4,167%
Iodine (from Kelp / Potassium Iodide) 150 mcg 100%
Magnesium (as Magnesium Oxide) 200 mg 48%
Zinc (as Zinc Oxide) 8 mg 73%
Selenium (as Amino Acid Chelate) 200 mcg 364%
Copper (as Cupric 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 Fruit Powder 240 mg **
Ashwagandha Root Powder 200 mg **
Bladderwrack Thallus Powder 50 mg **
Cayenne Pepper Fruit Powder 30 mg **
Kelp 38 mg **
Bioavailability Fair

Absorption Rating

  • Vitamin B-12 (as Cyanocobalamin) Fair
  • Iodine (from Kelp / Potassium Iodide) Good
  • Magnesium (as Magnesium Oxide) Poor
  • Zinc (as Zinc Oxide) Poor
  • Selenium (as Amino Acid Chelate) Good
  • Copper (as Cupric Oxide) Poor
  • Manganese (as Amino Acid Chelate) Good
  • Molybdenum (as Amino Acid Chelate) Good
  • L-Tyrosine Good
  • Schisandra Fruit Powder Good
  • Ashwagandha Root Powder Poor
  • Bladderwrack Thallus Powder Fair
  • Cayenne Pepper Fruit Powder Fair
  • Kelp Fair
Other Ingredients Excellent

Fillers & Additives

  • Gelatin (Bovine)
  • Rice Flour
  • Vegetable Magnesium Stearate
  • Silicon Dioxide
  • Chlorophyll
Efficacy Good

Dosage Analysis

  • Vitamin B-12 (as Cyanocobalamin) 100 mcg Effective
  • Iodine (from Kelp / Potassium Iodide) 150 mcg Effective
  • Magnesium (as Magnesium Oxide) 200 mg Effective
  • Zinc (as Zinc Oxide) 8 mg Effective
  • Selenium (as Amino Acid Chelate) 200 mcg Effective
  • Copper (as Cupric 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 Fruit Powder 240 mg Under-dosed
  • Ashwagandha Root Powder 200 mg Under-dosed
  • Cayenne Pepper Fruit Powder 30 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B-12 (as Cyanocobalamin) 100 mcg 4,167%
Iodine (from Kelp / Potassium Iodide) 150 mcg 100%
Magnesium (as Magnesium Oxide) 200 mg 48%
Zinc (as Zinc Oxide) 8 mg 73%
Selenium (as Amino Acid Chelate) 200 mcg 364%
Copper (as Cupric 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 Fruit Powder 240 mg **
Ashwagandha Root Powder 200 mg **
Bladderwrack Thallus Powder 50 mg **
Cayenne Pepper Fruit Powder 30 mg **
Kelp 38 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin (Bovine) Safe

It is used to make capsules.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Vegetable Magnesium Stearate Safe

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

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Chlorophyll Safe

It is used as a natural colorant.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$38$37$35$34$33 Mar 12 $35.99$35.00
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
Nature's Craft

Founded 2013 · St. Petersburg, FL, United States · 243 products · shopnaturescraft.com/

Transparency

1 claim
Third Party Testing Claim — Claimed Source
Related Supplements
Frequently Asked Questions
Is Nature's Craft Thyroid Support, 120 Capsules a good supplement?

Nature's Craft Thyroid Support, 120 Capsules received a product quality score of 80/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 14 active ingredients with 60 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives.

What are the ingredients in Nature's Craft Thyroid Support, 120 Capsules?

Nature's Craft Thyroid Support, 120 Capsules contains 14 active ingredients: Vitamin B-12 (as Cyanocobalamin) (100 mcg), Iodine (from Kelp / Potassium Iodide) (150 mcg), Magnesium (as Magnesium Oxide) (200 mg), Zinc (as Zinc Oxide) (8 mg), Selenium (as Amino Acid Chelate) (200 mcg), Copper (as Cupric Oxide) (0.2 mg), and 8 more. Notable high-dose ingredients include Vitamin B-12 at 4,167% DV, Selenium at 364% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Craft Thyroid Support, 120 Capsules safe to take?

Nature's Craft Thyroid Support, 120 Capsules has been analyzed for ingredient safety across all its components. All 5 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. 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.