Is Dymatize ISO 100 Hydrolyzed Protein Powder Soy Free?

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

Why it's not soy free

  • soya
  • soy lecithin

soya

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.

Product Image

Description

Balanced flavors such as chocolate, vanilla, and cookies-and-cream are commonly noted, with sweetness described as moderate to strong. The powder often dissolves quickly into a smooth, creamy texture, though some reviewers report occasional chalkiness. Typical uses include shakes, smoothies, baking additions, and mixing into oatmeal or coffee for flavor enhancement.

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Ingredients

Hydrolyzed Whey Protein Isolate, Whey Protein Isolate, Cocoa Powder (processed With Alkali), Less Than 1% Of Salt, Soy Lecithin, Natural And Artificial Flavor, Potassium Chloride, Sucralose, Steviol Glycosides (stevia). Contains: Milk And Soya.

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About this product

Supplement · Powder

Flavor
Chocolatey
Texture
Dry
Commonly used for
DrinkingSmoothieMeal Prep