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 and Soy (lecithin).

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.

102 Reviews

  • 5

    R1 protein cafe mocha

    Posted by Lindsay LeBlanc on Aug 16th 2018

    Favorite protein ever used thus far! Flavor is outstanding

  • 5

    R1 Mocha Protein

    Posted by Frank on Aug 10th 2018

    Amazing protein, great in iced coffee for caffeine and protein!

  • 5

    R1 Protein

    Posted by Larry Hatter on Aug 10th 2018

    It was here in a timely manner and was the product I ordered

  • 5


    Posted by Unknown on Aug 8th 2018

    Lightly salted caramel is so good! Mixes well with whatever you choose. Great macros and ingredients

  • 5

    R1 Protien, vanilla cream and chocolate fudge

    Posted by Charlie Russell on Aug 8th 2018

    These two products are the bomb!! been on it for three weeks and lost 12.5 lbs. Highly highly recommend it to friends and family, my wife is on it as well and lost 5 pounds in a week.

  • 5

    Can't Get Enough of the Chocolate Fudge

    Posted by Madison on Jul 12th 2018

    I received a sample of this with my package and had to order some. The chocolate fudge is so good.. I mix it with cashew milk after a workout and there's no chunks! It also tastes great blended with ice, milk, and a banana. Definitely recommend!

  • 5

    Stop contemplating. Order this protein. You’re welcome.

    Posted by Breanna on Jul 12th 2018

    I switched to Rule One Protein a few months ago due to sensitivities I was having with the old brand I used. I instantly fell in love with the quality of the product and the customer service support I received during my initial order. I LOVE every flavor I have tried so far, and have so much fun incorporating the protein into my food concoctions. The best part is almost all the protein powders (isolate/hydrolysate blend) have the same macro profile, making it super easy to switch things up when you’re tracking without worrying about re-counting/re-tracking everything!

  • 5

    Best Flavors On The Market

    Posted by Danny N. on Jul 9th 2018

    I've tried frozen banana, lemon bar, salted caramel and mint chocolate - all of which are fantastic tasting and how a protein powder should be!

  • 5

    Great product

    Posted by Crystal Tanner on Jul 7th 2018

    Very happy with this product. Taste great too...