Casein

Casein is the other milk protein, complete like whey but digested slowly because it forms a gel in the stomach — which is why it is marketed as a nighttime or between-meals protein. The slow-release framing is real; the "anabolic overnight" promises around it run ahead of the evidence, and we keep our coverage to what the panel says. Judge casein the way you judge any powder: grams per serving, dollars per 20g of protein, and whether the brand publishes third-party testing. The texture is thicker than whey, which some people prefer in a pudding and others do not.