Is Optimum Nutrition Gold Standard 100% Whey Protein Soy Free?

No. This product is not soy free as it lists 2 ingredients that contain soy.

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Why it's not soy free

soy
soy lecithin

soy

Dietitian note

Soy protein isolate is a concentrated form of plant-based protein extracted from defatted soybean meal and commonly used to boost protein content in processed foods and supplements. It retains allergenic soy proteins that can provoke IgE-mediated responses in sensitive individuals. Avoidance is essential on a soy-free diet to prevent adverse allergic reactions and inadvertent exposure to soy allergens.

Note by Vanessa Vargas, RDN, LDN

soy lecithin

Every flagged ingredient, explained

Notes and swaps for all 2 flagged ingredients, plus soy free products to buy instead.

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Ingredients

Protein Blend (whey Protein Isolate, Whey Protein Concentrate, Hydrolyzed Whey Protein), Cocoa Powder (processed With Alkali), Sunflower And/or Soy Lecithin, Natural And Artificial Flavor, Acesulfame Potassium. Contains Milk and Soy.

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Often paired with Soy Free

Gluten FreeMaybe

This product may or may not be gluten free as it lists 1 ingredient that could contain gluten depending on the source. We recommend contacting the manufacturer directly to confirm.

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Dairy FreeNo

No. This product is not dairy free as it lists 4 ingredients that contain dairy.

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