Skip to content
View cart View cart Cart
View cart View cart Checkout Checkout


Rule One Proteins
2.58 lbs.
Item #
Ship Weight
2.95 Lb(s)
1 Scoop(s)


    Rule One Proteins - R1 Protein 100% Whey Protein Isolate & Whey Protein Hydrolysate Formula Powder Chocolate Peanut Butter - 2.58 lbs. (1171 g)

    Rule One Proteins' flagship protein is made with super-pure 100% whey isolate, fast-acting whey hydrolysate, and virtually nothing else. Rule One has 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

    What Exactly Goes Into Better Protein?
    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

    Rule One Proteins Frequently Asked Questions

    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 their 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.

    Suggested Use

    Tasty Shakes: Mix one heaping scoop of R1 Protein with approximately 6-8 oz. of water, milk or your favorite beverage in a shaker cup or glass with spoon.

    Juicy Smoothies: Add your favorite fruit and ice to the above, mix in blender and enjoy!

    Quickie Breakfasts: Stir one scoop into oatmeal or yogurt for a fortified start.


    Rule One Proteins - R1 Protein 100% Whey Protein Isolate & Whey Protein Hydrolysate Formula Powder Chocolate Peanut Butter - 2.58 lbs. (1171 g)
    Nutrition Facts
    Serving Size 1 Scoop (30.8g)
    Servings Per Container 38
    Amount Per Serving
    Calories 110 Calories from Fat 5
    % Daily Value*
    Total Fat 0.5 g 1%
    Saturated Fat 0 g 0%
    Trans Fat 0 g
    Cholesterol 5 mg 2%
    Sodium 150 mg 6%
    Total Carbohydrate 2 g 1%
    Dietary Fiber 1 g 4%
    Sugars 0 g
    Protein 25 g 50%
    Vitamin A 0% Vitamin C 0%
    Calcium 15% Iron 4%
    * Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
    Calories: 2,000 2,500
    Total Fat Less than 65 g 80 g
    Saturated Fat Less than 20 g 25 g
    Cholesterol Less than 300 mg 300 mg
    Sodium Less than 2,400 mg 2,400 mg
    Potassium 3,500 mg 3,500 mg
    Total Carbohydrate 300 g 375 g
    Dietary Fiber 25 g 30 g
    Protein 50 g 65 g
    Calories per Gram:
    Fat 9 • Carbohydrate 4 • Protein 4
    Ingredients: Protein Blend (Whey Protein Isolate, Whey Protein Hydrolysate), Cocoa (processed with Alkali), Natural and Artificial Flavor, Lecithin, Sucralose, Salt, Acesulfame Potassium.

    Allergen Information: Contains milk and soy (lecithin) ingredients.
    Naturally Occurring
    Amino Acid Profile
    Essential Aminos
    Leucine Isoleucine
    Valine Histidine
    Lysine Tryptophan
    Methionine Threonine
    Conditionally Essential Aminos
    Arginine Tyrosine
    Glycine Glutamine &
    Glutamic Acid
    Non-Essential Aminos
    Aspartic Acid Alanine
    Proline Serine
    25g Total Protein Count per serving


    Use this product as a food supplement only. Do not use for weight reduction. Product sold by weight, not volume. To preserve freshness, store this container tightly closed some place cool and dry. Small amounts of soy lecithin are added as an emulsifier to help with mixing.
    Prop 65 Warning
    This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

    Questions & Answers



    Reviews Icon
    Review this item and be entered to win a

    $500 GIFT CARD

    Each review you submit on our website enters you for a chance to win our $500 gift card giveaway!

    Listings For This Product




    Recently Viewed


    The products and the claims made about specific products on or through this site have not been evaluated by or the United States Food and Drug Administration and are not approved to diagnose, treat, cure or prevent disease. The information provided on this site is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional or any information contained on or in any product label or packaging. You should not use the information on this site for diagnosis or treatment of any health problem or for prescription of any medication or other treatment. You should consult with a health care professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem.
    back-to-top-arrow TOP