Isopure Isopure Protein Powder supplement bottle
Isopure

Isopure Protein Powder

What We Researched
24 active ingredients analyzed · 6 inactive ingredients decoded · 1 brand certification checked · Last updated: Mar 2026
73
Product Score Fair
67
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium 370mg 30%
Potassium 430mg 10%
Vitamin A 370mcg 40%
Vitamin C 15mg 15%
Vitamin E 5mg 35%
Vitamin K 20mcg 15%
Thiamin 0.38mg 30%
Riboflavin 0.43mg
Niacin 5mg 35%
Vitamin B6 0.5mg 30%
Folate 165mcg DFE (100mcg folic acid) 30%
Vitamin B12 2.43mcg 40%
Biotin 7.5mcg 100%
Pantothenic Acid 2.5mg 250%
Phosphorus 280mg 50%
Iodine 37mcg 20%
Magnesium 105mg 25%
Zinc 4mg 35%
Selenium 17mcg 25%
Copper 0.54mg 35%
Manganese 0.5mg 30%
Chromium 30mcg 60%
Molybdenum 18.5mcg 40%
Chloride 390mg 15%
Bioavailability Very Good

Absorption Rating

  • Calcium Good
  • Potassium Good
  • Vitamin A Good
  • Vitamin C Fair
  • Vitamin E Good
  • Vitamin K Good
  • Thiamin Good
  • Riboflavin Good
  • Niacin Good
  • Vitamin B6 Fair
  • Folate Fair
  • Vitamin B12 Fair
  • Biotin Good
  • Pantothenic Acid Good
  • Phosphorus Good
  • Iodine Good
  • Magnesium Good
  • Zinc Fair
  • Selenium Good
  • Copper Fair
  • Manganese Good
  • Chromium Fair
  • Molybdenum Good
  • Chloride Good
Other Ingredients Excellent

Fillers & Additives

  • Whey Protein Isolate
  • Soy Lecithin
  • Natural and Artificial Flavor
  • Salt
  • Sucralose
  • Xanthan Gum
Efficacy Very Poor

Dosage Analysis

  • Calcium 370mg Under-dosed
  • Potassium 430mg Under-dosed
  • Vitamin A 370mcg Under-dosed
  • Vitamin C 15mg Under-dosed
  • Vitamin E 5mg Under-dosed
  • Vitamin K 20mcg Under-dosed
  • Thiamin 0.38mg Under-dosed
  • Riboflavin 0.43mg Under-dosed
  • Niacin 5mg Under-dosed
  • Vitamin B6 0.5mg Under-dosed
  • Folate 165mcg DFE (100mcg folic acid) Under-dosed
  • Vitamin B12 2.43mcg Effective
  • Biotin 7.5mcg Under-dosed
  • Pantothenic Acid 2.5mg Under-dosed
  • Phosphorus 280mg Under-dosed
  • Iodine 37mcg Under-dosed
  • Magnesium 105mg Under-dosed
  • Zinc 4mg Under-dosed
  • Selenium 17mcg Under-dosed
  • Copper 0.54mg Effective
  • Manganese 0.5mg Under-dosed
  • Chromium 30mcg Under-dosed
  • Molybdenum 18.5mcg Under-dosed
  • Chloride 390mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calcium 370mg 30%
Potassium 430mg 10%
Vitamin A 370mcg 40%
Vitamin C 15mg 15%
Vitamin E 5mg 35%
Vitamin K 20mcg 15%
Thiamin 0.38mg 30%
Riboflavin 0.43mg
Niacin 5mg 35%
Vitamin B6 0.5mg 30%
Folate 165mcg DFE (100mcg folic acid) 30%
Vitamin B12 2.43mcg 40%
Biotin 7.5mcg 100%
Pantothenic Acid 2.5mg 250%
Phosphorus 280mg 50%
Iodine 37mcg 20%
Magnesium 105mg 25%
Zinc 4mg 35%
Selenium 17mcg 25%
Copper 0.54mg 35%
Manganese 0.5mg 30%
Chromium 30mcg 60%
Molybdenum 18.5mcg 40%
Chloride 390mg 15%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Whey Protein Isolate Generally_safe

It is used as a protein source and to add bulk.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Natural and Artificial Flavor Generally_safe

It is used to improve the taste of the product.

Salt Safe

It is used as a flavoring agent.

Sucralose Generally_safe

Adds sweetness to chewables, gummies, and powdered supplements without calories.

Xanthan Gum Safe

Thickens and stabilizes liquid and semi-solid supplements.

Brand Trust Report
Isopure

Founded 1998 · Downers Grove, IL, United States · 26 products · theisopurecompany.com/

Certifications

1 certification
Informed Sport Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed
In House Testing — Verified

Violation History

3 incidents
Prop 65 Lead2025-04-11Source
Lawsuit Deceptive packaging with approximately 30% empty space ('slack-fill').2015Source
Lawsuit Misrepresenting the amount of whey protein in products ('protein-spiking').2014Source
Related Supplements
Frequently Asked Questions
Is Isopure Isopure Protein Powder a good supplement?

Isopure Isopure Protein Powder received a product quality score of 73/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 24 active ingredients Of the 6 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Isopure, holds a brand trust score of 67/100 with 1 verified certifications including Informed Sport.

What are the ingredients in Isopure Isopure Protein Powder?

Isopure Isopure Protein Powder contains 24 active ingredients: Calcium (370mg), Potassium (430mg), Vitamin A (370mcg), Vitamin C (15mg), Vitamin E (5mg), Vitamin K (20mcg), and 18 more. Notable high-dose ingredients include Pantothenic Acid at 250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Isopure Isopure Protein Powder safe to take?

Isopure Isopure Protein Powder 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 Isopure a trustworthy supplement brand?

Isopure receives a brand trust score of 67/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1998 and headquartered in Downers Grove, IL, United States, the company offers 26 products in their lineup. They hold 1 verified certifications including Informed Sport. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Isopure 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.