Rule 1 Casein Protein

Rule 1 Proteins' Slow Release Protein

Casein Protein delivers 25g of 100% Micellar Casein per serving, so it keeps working long after you've left the gym. It's 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

Casein Protein is a complete dairy protein with a thick creamy texture and all nine essential amino acids (EAAs). Compared with other high-quality protein sources, casein is broken down into its amino acid components at a more prolonged rate, which makes it ideal for nighttime use.

Nighttime Formula

Use Casein Protein before bed to assist muscle repair and recovery overnight while you sleep. Alternatively, consume Casein Protein between meals to help curb hunger and satisfy sweet cravings.

Clean Manufacturing & Quality

Casein Protein is crafted in Rule 1's state-of-the-art, GMP-certified facility in the USA using premium globally sourced ingredients. It's rigorously tested for banned substances and certified by Informed Choice.

About The Brand

Rule 1 Proteins is more than just a supplement brand. With over a decade of experience in sports nutrition, Rule 1 manufactures all products in its state-of-the-art facility using premium globally sourced ingredients to deliver consistent, top-quality results in every scoop. No shortcuts, no compromises—just products designed to help athletes and fitness enthusiasts perform at their best.