Is whey protein forbidden?

Whey is what separates and drains from milk. It is permissible to consume, and there is no harm in it, unless the questioner intends to ask about thet inclusion of some forbidden substances in certain whey products, or its fermentation in a way that intoxicates. In that case, it becomes forbidden, not because it is "whey," but because it contains the cause of intoxication. Whey is considered an ideal drink for supplying the body with nutrients.