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

No. This product is not dairy free as it lists 3 ingredients that contain dairy.

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Why it's not dairy free

whey protein concentrate
whey peptides
whey protein isolate

whey protein concentrate

Dietitian note

Whey is a protein found in milk (dairy).

Note by Rhyan Geiger, RDN

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Ingredients

Protein blend (whey protein isolate, whey protein concentrate, whey peptides), natural and artificial flavor, lecithin, salt, acesulfame potassium, sucralose, lactase.

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What is a Dairy Free diet?

A dairy-free diet eliminates all foods made from or containing milk and milk-derived ingredients, such as butter, cheese, yogurt, and cream. It's essential for people with lactose intolerance, milk allergies, or those who prefer plant-based alternatives. Common dairy substitutes include almond, soy, oat, and coconut-based milks and cheeses. While dairy is a major source of calcium and vitamin D, these nutrients can be replaced through fortified foods or supplements. Many people find going dairy-free helps reduce digestive issues, acne, or inflammation, but balance and proper nutrient intake remain key for long-term health.

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Often paired with Dairy Free

VeganNo

No. This product is not vegan as it lists 3 ingredients that derive from animals and 2 ingredients that could could derive from animals depending on the source.

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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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