Also asked as: “Is protein powder halal?” · “Is whey isolate halal?”
Whey and rennet
Whey is a by-product of cheese. Most scholars accept it even when animal rennet was used, because the rennet is a tiny processing aid. A stricter view wants whey from microbial-rennet cheese.
Other ingredients
Check for gelatine (in some blends and capsules), collagen and alcohol-based flavourings.
Related questions
Written by the Halal Check Online editorial team. Last reviewed 2026-10-06. How we write these answers · Suggest a correction