Price: $42.99
(as of Feb 25, 2026 09:15:30 UTC – Details)

Product description

R1 Protein Flagship premium

R1 Protein product line family

What is R1 Protein Whey Isolate?

An exceptionally pure, fast-acting high-protein drink mix made with isolated whey proteins that have been extensively filtered to remove fat, carbohydrates, lactose, and cholesterol. The macros are about as clean as proteins get.

How is R1 Protein Whey Isolate different than other whey proteins?

100% of the protein in R1 Protein Whey Isolate is from intact and hydrolyzed whey isolates. These premium sources yield higher protein content and contain significantly less fat and sugar than concentrates used in typical 100% whey protein formulas.

When are the best times to use R1 Protein Whey Isolate?

R1 Protein Whey Isolate is best used before and after workouts when fast-delivery of EAAs and BCAAs is most beneficial for muscle repair and recovery.

How do I prepare R1 Protein Whey Isolate?

Simply mix one scoop of R1 Protein Whey Isolate with 6-8 oz. of cold water, milk, or juice in a shaker cup or in a glass with a spoon. For added variety and nutrient boost, try blending R1 Protein with ice and fruit to create delicious smoothies.

Is R1 Protein Whey Isolate suitable for competitive athletes?

As an Informed Choice certified product, R1 Protein Whey Isolate is regularly tested for the presence of banned substances by world-class anti-doping laboratory, LGC.

More About Rule One Proteins

Manufactured in the USA

As one of the few brands that actually crafts the advanced formulas it brings to market, Rule One Proteins has it’s own U.S. based manufacturing facility that uses only premium, globally sourced ingredients to produce a full lineup of protein & performance powders. This hands-on approach lets the brand control every step, minimize inefficiencies, and maximize quality—so every scoop can be trusted to be the very best it can be.

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Customer Reviews

4.6 out of 5 stars 1,197

4.5 out of 5 stars 133

4.4 out of 5 stars 858

4.5 out of 5 stars 102

4.7 out of 5 stars 88

4.2 out of 5 stars 336

Price

$89.99$89.99

$43.66$43.66

$64.99$64.99

$44.99$44.99

$34.99$34.99

$59.99$59.99

Protein Sources

Whey Isolate & Hydrolyzed Whey

Clear Whey Isolate

Whey Concentrate & Isolates

7 Premium Protein Sources

Whey & Milk Isolate, Casein

Micellar Casein

Main Benefits

Pure & Fast Muscle Recovery

Refreshing, Pure, Recovery

Fast-Acting Muscle Recovery

Daily Protein & Recovery

Weight Gain & Muscle Recovery

Overnight Muscle Recovery

Protein per Serving

25g

20g

24g

22g

30g

25g

Suggested Uses

Pre/Post-Workout or Snack

Intra/Post-Workout or Snack

Pre/Post-Workout or Snack

Anytime – Day or Night

After Workouts & Between Meals

Before Bed

Banned Substance Tested

✔

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 6 x 6 x 10 inches; 2 Pounds
Item model number ‏ : ‎ RU0400
Department ‏ : ‎ Unisex
Date First Available ‏ : ‎ January 10, 2022
Manufacturer ‏ : ‎ Rule One Proteins, LLC
ASIN ‏ : ‎ B09Q4KRNVQ
Best Sellers Rank: #9,546 in Health & Household (See Top 100 in Health & Household) #56 in Sports Nutrition Protein Powder Blends
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Our Flagship Protein Powder: With 100% of the protein from derived from whey isolate sources, the pinnacle of our protein lineup is pure, fast-acting, and available in a variety of great tasting flavors.
Protein & Amino Packed: Provides 25g of protein and 6g of naturally occurring branched chain amino acids (BCAA) per serving for daily fortification and recovery after workouts
Ultra-Clean Macros: R1 Protein Whey Isolate contains no whey concentrates, added sugars, gums, creamers, gluten, or amino spiking. It’s also virtually lactose & cholesterol free.
Anytime Formula: R1 Protein Whey Isolate works well first thing in the morning, before or after workouts, between meals as a snack, or anytime for a high protein treat.
Clean Manufacturing: Proudly made in the USA in our own state-of-the-art facility with the finest globally sourced ingredients. As an Informed Choice certified product, R1 Protein Whey Isolate is also independently tested for banned substances.
Easy to Use: Add one scoop of R1 Protein Whey Isolate to 6-8 fluid ounces of cold water, milk, or your favorite beverage. Stir, shake, or blend for about 30 seconds, until smooth.
Approximate Sizing: *Weights are rounded to the nearest pound. Product servings per container vary slightly between flavors.