The full answer
Whey is produced during cheesemaking, so its status can be connected to how the cheese was manufactured and which enzymes were used.
Whey appears in protein powders, snacks, candy and baked goods.
Halal certification can help verify the manufacturing process rather than requiring consumers to trace every ingredient themselves.
Answers in the Halal Knowledge Center reflect the standards followed by Halal Monitoring Services (HMS), which operates as part of the Shariah Board of America. HMS certifies only what it checks.