Casein

    Written by:
    Megan Michaux, Nick Milazzo

    Fact-checked

    by:

    Nick Milazzo, Conni Covington
    Last Updated: June 4, 2024

    Casein is a type of protein found in milk, and it makes up around 80% of the proteins in cow’s milk. Casein is sometimes called a slow-digesting protein because it forms a gel in the stomach and therefore takes longer to digest than whey protein.

    Overview

    Dosage information

    Casein supplements can be used as a part of your daily protein intake. You can use our protein intake calculator to work out your own optimal daily protein intake.

    While the RDA for protein is 0.8 grams of protein per kilogram of body mass per day (g/kg/day), most people would benefit from having a higher protein intake in the range of 1.2g/kg/day to 1.6g/kg/day. Older people, athletes, and highly active people could need up to 2g/kg/day.[1][2]

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