Whey Isolate/Hydrolysate

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Whey Isolate/Hydrolysate Formula

Our flagship protein is made with super-pure 100% whey isolate, fast-acting whey hydrolysate, and virtually nothing else. We’ve completely omitted the use of whey concentrates as well as creamers, gums, amino spiking, and other fillers that dilute what you really came for – protein. The result is an industry leading Protein Purity Percentage (PPP) of up to 87%. ^ R1 Protein is protein with a capital-P.

  • ZERO sugar
  • ZERO fat
  • ZERO gluten
  • ZERO gums
  • ZERO creamers
  • ZERO fillers
  • ZERO artificial preservatives
  • ZERO amino or banned substance spiking


Whey Isolate/Hydrolysate Formula

  • 25 g fast-acting protein*
  • 100% of protein from whey isolates & hydrolysates – no whey concentrates!
  • 6+ g BCAAs*
  • Fully instantized to mix easily with a spoon or shaker cup
  • Carefully blended and packaged in an NSF GMP facility in the USA

^PPP varies by flavor and is calculated as protein per serving (g) / serving size (g) x 100. * Per serving. * Amino acids are naturally occurring and approximated.


Add one (1) scoop of R1 Protein powder to one (1) cup *8oz) of cold water. Stir or blend until smooth

Allergen Information

contains Milk, Soy and Wheat.

Chocolate Fudge
Orange Dreamsicle
Cookies and Creme
Lightly Salted Caramel
Red Velvet
Strawberry Nutrition
Vanilla Butter Cake
Vanilla Creme
When are the best times to use R1 Protein?
R1 Protein is a fast acting protein and works well first thing in the morning and before or immediately after workouts to help effectively deliver the vital amino acids your muscles need for optimal performance.
How much R1 Protein should I take?
It really depends upon factors such as your physical size, what your diet consists of, how many total calories you consume, and your activity level. A common rule of thumb in the bodybuilding world is to aim for 1 gram of protein per pound of bodyweight per day. In other words, a 200 lb athlete should target 200 g of total protein from all dietary sources including protein powders and other supplements.
What are the main differences between R1 Protein and R1 Whey Blend?
R1 Protein is our flagship protein made exclusively with pure, fast-acting whey protein isolates and whey protein hydrolysates. R1 Protein contains no fillers, creamers, or gums and provides little to no fat, cholesterol, carbohydrate, or sugars. When it comes to protein powders, they don't get much cleaner than this. R1 Whey Blend is also 100% whey protein, but contains a blend of whey protein concentrates, isolates and hydrolysates. The whey protein concentrates contain less protein and greater amounts of fat and carbs than isolates, but they are more cost effective. Whey protein concentrates also contribute to a richer flavor and creamier texture, making R1 Whey Blend is a great choice for athletes who prioritize taste when choosing a protein powder.

90 Reviews

  • 5

    Whey isolate

    Posted by Christian on Jun 11th 2018

    It’s my favorite flavor. I love it. I’m never leaving this flavor.

  • 5


    Posted by Meghan on Jun 7th 2018

    Love Chocolate PB Rule1. Doesn't clump, tastes great with water. Tastes like a chocolate PB shake and takes away candy bar cravings! :)

  • 5


    Posted by Robert Camacho on Jun 7th 2018

    Tastes amazing! Works great. Love this product. Recommended to my friends and family.

  • 5

    Best. Decision. Evaaaaa.

    Posted by Breanna on Jun 6th 2018

    I tried Rule 1 protein because I had been experiencing some bloating issues with the protein I had been using for the last 7-10 years (optimum nutrition). I was in my first bodybuilding prep and my body started to react to things in ways it never had before. I decided to try Rule 1 because I was interested in their cleaner ingredients and lack of whey concentrate in this protein mix. I have tried a couple flavors and LOVE them! I like to mix whey into my breakfast quinoa, Greek yogurt, pancakes, as popcorn topping, etc., and Rule 1 has taken the flavor up a notch! I’ll be a customer for as long as they sell this product!

  • 5

    R1 Protein

    Posted by Jim Mayle on Jun 5th 2018

    After my daily workout, I take R1 Protein w/ almond milk and it provide a fast recovery and curb my desire to over eat, lost 20 pounds in the last six months.....

  • 5

    R1 Protein - Chocolate Fudge

    Posted by Chris Gilli on May 28th 2018

    Ok, I switched to rule 1 looking for the cleanest protein I could find. This product is low in calories, carbs, fat and cholesterol. It's amazing the crap other companies put in their products. This mixes almost instantly and tastes fine. It doesn't get as thick as other proteins, which I like better. Has a slight after taste but will still take this all day long over any other product that I have tried.

  • 5

    R1 is Amazing

    Posted by Zee on May 27th 2018

    Absolutely blown away by the taste and how R1 reacts with my body. Tastes and mixes well with water and I have had no stomach issues after taking. Being lactose intolerant it has been hard to find a whey protein that works with me body. R1 is the best ever protein I have taken.

  • 5

    R1 Protein

    Posted by Brandon on May 24th 2018

    Best tasting protein powder I've ever had!

  • 5

    Great Product!

    Posted by Unknown on May 24th 2018

    Tastes great. Very satisfying.