100% Whey Protein

Acesulfame Potassium

Limited safety data; may affect insulin response; animal studies showed tumor increases.

Maltodextrin

Ultra-processed starch derivative; very high glycemic index; may disrupt gut bacteria.

Natural Flavors

Vague term masking hundreds of possible compounds; may include MSG, beaver anal gland secretions, and other sources.

Sucralose

May alter gut microbiome; studies show possible DNA damage at high doses.