We utilize 25g per serving of Micellar Casein in this protein formula, so it keeps working long after you've left the gym. Its slow-release formulation is designed for occasions when you want a protein that takes its time and delivers its amino acids benefits over several hours.

Overnight Sensation

R1 Casein provides 25g of slow-release protein in a thick and satisfying shake.

Made with 100% micellar casein protein

Extended amino acid delivery

Feeds muscles while you sleep

Naturally rich in all 9 EAAs, including 3 BCAAs^^ 

 R1 Casein's extended-delivery formula includes several positive negatives:

ZERO Non-Casein Proteins

ZERO Creamers

ZERO Amino Spiking

ZERO Banned Substances