Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 Capsules supplement bottle
Vitacost-Synergy

Thyroid Support Complex† with L-Tyrosine, 100 Capsules

What We Researched
9 active ingredients analyzed · 4 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
86
Product Score Good
62
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B12 (as methylcobalamin) 100 mcg 1,667%
Iodine (as potassium iodide) 200 mcg 133%
Magnesium (as magnesium oxide) 200 mg 50%
Zinc (as zinc gluconate) 6 mg 40%
Copper (as copper gluconate) 0.3 mg 15%
Manganese (as manganese gluconate) 2.3 mg 115%
Molybdenum (as amino acid chelate) 100 mcg 133%
L-Tyrosine 248 mg *
Glandular Complexliver, kidney, lung, spleen, heart and pancreas 70 mg *
Bioavailability Very Good

Absorption Rating

  • Vitamin B12 (as methylcobalamin) Good
  • Iodine (as potassium iodide) Good
  • Magnesium (as magnesium oxide) Poor
  • Zinc (as zinc gluconate) Good
  • Copper (as copper gluconate) Good
  • Manganese (as manganese gluconate) Good
  • Molybdenum (as amino acid chelate) Good
  • L-Tyrosine Good
  • Glandular Complexliver, kidney, lung, spleen, heart and pancreas Fair
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Gelatin
  • Vegetable Stearic Acid
  • Vegetable magnesium stearte and silicon dioxide
Efficacy Good

Dosage Analysis

  • Vitamin B12 (as methylcobalamin) 100 mcg Effective
  • Iodine (as potassium iodide) 200 mcg Effective
  • Magnesium (as magnesium oxide) 200 mg Effective
  • Zinc (as zinc gluconate) 6 mg Under-dosed
  • Copper (as copper gluconate) 0.3 mg Under-dosed
  • Manganese (as manganese gluconate) 2.3 mg Effective
  • Molybdenum (as amino acid chelate) 100 mcg Effective
  • L-Tyrosine 248 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B12 (as methylcobalamin) 100 mcg 1,667%
Iodine (as potassium iodide) 200 mcg 133%
Magnesium (as magnesium oxide) 200 mg 50%
Zinc (as zinc gluconate) 6 mg 40%
Copper (as copper gluconate) 0.3 mg 15%
Manganese (as manganese gluconate) 2.3 mg 115%
Molybdenum (as amino acid chelate) 100 mcg 133%
L-Tyrosine 248 mg *
Glandular Complexliver, kidney, lung, spleen, heart and pancreas 70 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Vegetable Stearic Acid Generally_safe

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

Vegetable magnesium stearte and silicon dioxide Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$9$8$7$6$5 Mar 12 $7.49
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
Vitacost-Synergy

Founded 1994 · Boca Raton, Florida, United States · 53 products · vitacost.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed

Violation History

3 incidents
Prop 65 Lead2020-10-26Source
Lawsuit Mislabeled magnesium content in supplements.2016Source
Recall SYNERGY PLUS (For Children Over 4 Years) CHEWABLES Vitabots Multiple Vitamins & Minerals with Digestive Enzymes and Oat Bran1993-11-08Source
Related Supplements
Frequently Asked Questions
Is Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 Capsules a good supplement?

Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 Capsules received a product quality score of 86/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 9 active ingredients with 50 servings per container. Of the 4 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, Vitacost-Synergy, holds a brand trust score of 62/100 with 1 verified certifications including Consumerlab.

What are the ingredients in Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 Capsules?

Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 Capsules contains 9 active ingredients: Vitamin B12 (as methylcobalamin) (100 mcg), Iodine (as potassium iodide) (200 mcg), Magnesium (as magnesium oxide) (200 mg), Zinc (as zinc gluconate) (6 mg), Copper (as copper gluconate) (0.3 mg), Manganese (as manganese gluconate) (2.3 mg), and 3 more. Notable high-dose ingredients include Vitamin B12 at 1,667% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 Capsules safe to take?

Vitacost-Synergy Thyroid Support Complex† with L-Tyrosine, 100 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 Vitacost-Synergy a trustworthy supplement brand?

Vitacost-Synergy receives a brand trust score of 62/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1994 and headquartered in Boca Raton, Florida, United States, the company offers 53 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Vitacost-Synergy 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.