Life Extension Thyroid Support Complex, 60 Capsules supplement bottle
Life Extension

Thyroid Support Complex, 60 Capsules

What We Researched
6 active ingredients analyzed · 8 inactive ingredients decoded · 3 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
90
Product Score Excellent
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as retinyl palmitate) 300 mcg^ 33%
Vitamin B12 (as methylcobalamin) 200 mcg 8,333%
Iodine (from kelp and potassium iodide) 350 mcg 233%
Sensoril®Ashwagandha extract (root,leaf) [std. to 32% oligosaccharides, 10% withanolide glycoside conjugated] 500 mg **
L-Tyrosine 200 mg **
GS15-4™ Fermented Korean ginseng extract (root) 200 mg **
Bioavailability Excellent

Absorption Rating

  • Vitamin A (as retinyl palmitate) Good
  • Vitamin B12 (as methylcobalamin) Good
  • Iodine (from kelp and potassium iodide) Good
  • Sensoril®Ashwagandha extract (root,leaf) [std. to 32% oligosaccharides, 10% withanolide glycoside conjugated] Good
  • L-Tyrosine Good
  • GS15-4™ Fermented Korean ginseng extract (root) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetable Cellulose (Capsule)
  • Microcrystalline Cellulose
  • Gum Acacia
  • Maltodextrin
  • Silica
  • Vegetable Stearate
  • Dicalcium Phosphate
  • Food Starch-Modified
Efficacy Good

Dosage Analysis

  • Vitamin A (as retinyl palmitate) 300 mcg^ Under-dosed
  • Vitamin B12 (as methylcobalamin) 200 mcg Effective
  • Iodine (from kelp and potassium iodide) 350 mcg High
  • Sensoril®Ashwagandha extract (root,leaf) [std. to 32% oligosaccharides, 10% withanolide glycoside conjugated] 500 mg Effective
  • L-Tyrosine 200 mg Under-dosed
  • GS15-4™ Fermented Korean ginseng extract (root) 200 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (as retinyl palmitate) 300 mcg^ 33%
Vitamin B12 (as methylcobalamin) 200 mcg 8,333%
Iodine (from kelp and potassium iodide) 350 mcg 233%
Sensoril®Ashwagandha extract (root,leaf) [std. to 32% oligosaccharides, 10% withanolide glycoside conjugated] 500 mg **
L-Tyrosine 200 mg **
GS15-4™ Fermented Korean ginseng extract (root) 200 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetable Cellulose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Gum Acacia Safe

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

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Vegetable Stearate Safe

Prevents ingredients from sticking to equipment.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Food Starch-Modified Generally_safe

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

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$28$27$25$24$22 Mar 12 $26.25$24.00
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
Life Extension

Founded 1980 · Fort Lauderdale, Florida, USA · 352 products · lifeextension.com

Certifications

3 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed

Violation History

2 incidents
Prop 65 Lead2018-04-13Source
Fda Warning Making drug claims for dietary supplements, suggesting they can treat, mitigate, or prevent diseases such as breast cancer and Alzheimer's.2017-02-01Source
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Frequently Asked Questions
Is Life Extension Thyroid Support Complex, 60 Capsules a good supplement?

Life Extension Thyroid Support Complex, 60 Capsules received a product quality score of 90/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 6 active ingredients with 30 servings per container. Of the 8 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Life Extension, holds a brand trust score of 86/100 with 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in Life Extension Thyroid Support Complex, 60 Capsules?

Life Extension Thyroid Support Complex, 60 Capsules contains 6 active ingredients: Vitamin A (as retinyl palmitate) (300 mcg^), Vitamin B12 (as methylcobalamin) (200 mcg), Iodine (from kelp and potassium iodide) (350 mcg), Sensoril®Ashwagandha extract (root,leaf) [std. to 32% oligosaccharides, 10% withanolide glycoside conjugated] (500 mg), L-Tyrosine (200 mg), GS15-4™ Fermented Korean ginseng extract (root) (200 mg). Notable high-dose ingredients include Vitamin B12 at 8,333% DV, Iodine at 233% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Life Extension Thyroid Support Complex, 60 Capsules safe to take?

Life Extension Thyroid Support Complex, 60 Capsules 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 Life Extension a trustworthy supplement brand?

Life Extension receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1980 and headquartered in Fort Lauderdale, Florida, USA, the company offers 352 products in their lineup. They hold 3 verified certifications including Consumerlab, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Life Extension has 2 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.