Casein protein supplies a nutrient or bioactive compound intended to alter a defined physiological pathway. The relevant form, baseline status and product quality determine whether the proposed mechanism is clinically meaningful.
What it is, why people use it, the evidence, and what to know before trying it.
Known side effects, interactions and use limits from reviewed sources.
Casein is a milk protein and is unsuitable for milk-protein allergy; lactose content varies. Total dietary protein and energy matter more than timing a specific powder.