Casein
We utilize 25g per serving of Micellar Casein in this protein formula, 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.

“I’ve tried a few different casein powders and Rule 1 by far is the best. Great taste and mixes well.”
- Joeper
Casein
WHAT IT IS
Slow-release Protein

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^^
Informed Choice® Certified.
Regularly tested for banned substances by the world class sports anti-doping lab, LGC.
† Per serving
^^ Amino acids are naturally occurring and approximated.

HOW TO USE IT
Before Bedtime
Casein is best used during extended periods of downtime, like at bedtime or between meals.
Mixing Directions
Mix one (1) heaping scoop of Casein with 10-12 oz. of water, milk, or your favorite beverage in a shaker cup or 16 oz. glass. Shake or stir it up! Set your blender on high to make it extra smooth.
Alternate Suggested Use
In a blender, add your favorite fruit and ice to the above, mix, and enjoy a protein-fortified fruit smoothie!
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Cookies and Cream, strawberry, and chocolate
Absolutely love these casein protein flavors from R1! I do a lot of baking with protein powder and r1 casein is my go to powder of choice! Taste 10/10 and value 10/10!
I love my Rule 1 Casein
My daily treat: RULE 1 in a Ninja Creamy - 2 Scoops Rule 1 - 500 ML of Milk - 1 TBSP of Zero sugar jello cheesecake Freeze and you’ll have the best protein treat you’ve ever had
Best casein protein on the market
The taste, texture, and smell are perfect with this casein protein (I use chocolate and strawberry) Protein shakes, protein baked goods such as brownies, cookies, etc. I also make a protein spread to use on my keto bread.
Quality casein and service
The casein is quality and tasty. I received the wrong order and they promptly took care of it without any effort from me. I appreciate good service like this!