Terry Naturally Iodine Co-Factors supplement bottle
Terry Naturally

Iodine Co-Factors Review

What We Researched
6 active ingredients analyzed · 5 inactive ingredients decoded · 3 brand certifications checked · Last updated: Aug 2026
94
Product Score Excellent
72
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 C (as Ascorbic Acid) 1200 mg 2000%
Thiamine (as Thiamine Hydrochloride, Vitamin B1) 100 mg 6667%
Riboflavin (as Vitamin B2) 100 mg 5882%
Magnesium (as Magnesium Oxide, TRAACS Magnesium Bisglycinate Chelate) 200 mg 50%
Selenium (as Selenium Glycinate) 200 mcg 286%
Manganese (as TRAACS Manganese Bisglycinate Chelate) 10 mg 500%
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Ascorbic Acid) Fair
  • Thiamine (as Thiamine Hydrochloride, Vitamin B1) Fair
  • Riboflavin (as Vitamin B2) Good
  • Magnesium (as Magnesium Oxide, TRAACS Magnesium Bisglycinate Chelate) Good
  • Selenium (as Selenium Glycinate) Good
  • Manganese (as TRAACS Manganese Bisglycinate Chelate) Good
Other Ingredients Excellent

Fillers & Additives

  • Hydroxypropyl Methylcellulose
  • Organic Rice Bran Extract
  • Maltodextrin
  • Organic Rice Concentrate
  • Silica
Efficacy Excellent

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 1200 mg Effective
  • Thiamine (as Thiamine Hydrochloride, Vitamin B1) 100 mg Effective
  • Riboflavin (as Vitamin B2) 100 mg Effective
  • Magnesium (as Magnesium Oxide, TRAACS Magnesium Bisglycinate Chelate) 200 mg Effective
  • Selenium (as Selenium Glycinate) 200 mcg Effective
  • Manganese (as TRAACS Manganese Bisglycinate Chelate) 10 mg High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Ascorbic Acid) 1200 mg 2000%
Thiamine (as Thiamine Hydrochloride, Vitamin B1) 100 mg 6667%
Riboflavin (as Vitamin B2) 100 mg 5882%
Magnesium (as Magnesium Oxide, TRAACS Magnesium Bisglycinate Chelate) 200 mg 50%
Selenium (as Selenium Glycinate) 200 mcg 286%
Manganese (as TRAACS Manganese Bisglycinate Chelate) 10 mg 500%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Organic Rice Bran Extract Safe

It is used as a filler or flow agent.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Organic Rice Concentrate Generally_safe

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

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
Terry Naturally

Founded 2007 · Green Bay, Wisconsin, USA · 122 products · terrynaturallyvitamins.com/

Certifications

3 certifications
Fda Gmp Inspections Verified Source
IGEN Non-GMO Tested Verified
NSF Certified Verified

Transparency

3 claims
Third Party Testing Claim — Claimed Source
Testing Lab Disclosure — True

Violation History

2 incidents
Recall Terry Naturally® BioActive Vitamin B™ 60 count2023-04-21Source
Lawsuit Products contain significantly less curcumin than advertised.2023Source
Related Supplements
Frequently Asked Questions
Is Terry Naturally Iodine Co-Factors a good supplement?

Terry Naturally Iodine Co-Factors received a product quality score of 94/100 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 5 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Terry Naturally, holds a brand trust score of 72/100 with 3 verified certifications including Fda Gmp Inspections, IGEN Non-GMO Tested, NSF Certified.

What are the ingredients in Terry Naturally Iodine Co-Factors?

Terry Naturally Iodine Co-Factors contains 6 active ingredients: Vitamin C (as Ascorbic Acid) (1200 mg), Thiamine (as Thiamine Hydrochloride, Vitamin B1) (100 mg), Riboflavin (as Vitamin B2) (100 mg), Magnesium (as Magnesium Oxide, TRAACS Magnesium Bisglycinate Chelate) (200 mg), Selenium (as Selenium Glycinate) (200 mcg), Manganese (as TRAACS Manganese Bisglycinate Chelate) (10 mg). Notable high-dose ingredients include Vitamin C at 2000% DV, Thiamine at 6667% DV, Riboflavin at 5882% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Terry Naturally Iodine Co-Factors safe to take?

Terry Naturally Iodine Co-Factors 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 Terry Naturally a trustworthy supplement brand?

Terry Naturally receives a brand trust score of 72/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2007 and headquartered in Green Bay, Wisconsin, USA, the company offers 122 products in their lineup. They hold 3 verified certifications including Fda Gmp Inspections, IGEN Non-GMO Tested, NSF Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Terry Naturally has 2 historical regulatory incidents on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 150,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 150,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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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.