Lactic acid precipitated New Zealand casein extracted with ethyl alcohol.
Casein from bovine milk is a phosphoprotein. There are four main types of Casein which make up approximately 80% of the total protein in bovine milk: α-s1 Casein, α-s2 Casein, β-Casein, and κ-Casein. Casein is proposed to be the main protective constituent in milk.
You can meet part of your daily protein targets by consuming 1–2 scoops (20–40 grams) of casein protein before bed to reduce muscle protein breakdown while you sleep.