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Rule 1 R1 Protein Isolate

Rule 1 R1 Protein Isolate

A Product
Industry Leading Protein With Zero Sacrifices in Taste
  • 25g fast-acting protein
  • 100% of protein from whey isolates & hydrolysate isolates
  • 6g BCAAs
  • Informed Choice Certified
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*USA Only. Excludes: AK, HI, orders above 25lbs and bulk orders.

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Deals
Buy 2 for $75.99
Buy 2 for $75.99
Buy 2 Rule 1 R1 Protein Isolate 2lbs for only $75.99! Limited time only.
Buy 1 Get 1 FREE
Buy 1 Get 1 FREE
Buy 1 Rule 1 Protein Isolate 1lb and get 1 absolutely FREE! Limited time only.
LIMITED TIME PRICE CUT
LIMITED TIME PRICE CUT
Buy 1 Rule 1 R1 Protein Isolate 5lbs for only $79.99! Limited time only.
Buying Options
$34.99 34.9900
1lb
14 Servings | $2.50 Per Serving
Buy 1 Get 1 FREE
+
$44.99 44.9900
2lbs
29 Servings | $1.55 Per Serving
Buy 2 for $75.99
+
$99.99
$79.99 79.9900
5lbs
76 Servings | $1.05 Per Serving
LIMITED TIME PRICE CUT
+
$99.99 99.9900
5lbs Naturally Flavored
60 Servings | $1.67 Per Serving
+
$164.99 164.9900
10lbs
140 Servings | $1.18 Per Serving
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Nutrition Info

1lb Chocolate Fudge

Serving Size: 1 Scoop (32g)
Servings Per Container: 14
Amount Per Serving
Amt
%DV
Calories
110
Total Fat
0.5g
1%
Saturated Fat
0g
0%
Trans Fat
0g
Cholesterol
<5mg
2%
Sodium
60mg
3%
Total Carbohydrate
2g
1%
Dietary Fiber
1g
4%
Total Sugars
<1g
Protein
25g
50%
Vitamin D
0mcg
0%
Calcium
120mg
10%
Iron
1mg
6%
Potassium
270mg
6%
* % Daily Value is based on a 2,000 calorie diet. Your daily values may be higher or lower based on your calorie needs.
† Daily Value (DV) not established.
Ingredients
Protein Blend (Whey Protein Isolate, Hydrolyzed Whey Protein Isolate), Cocoa (Processed with Alkali), Natural and Artificial Flavors, Lecithin, Sucralose, Salt, Acesulfame Potassium.
Allergen Warning
Contains: Milk and Soy.

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

KEEP OUT OF REACH OF CHILDREN

Directions
Warnings
Expand Info
Product Information
R1 Protein our flagship premium protein

Rule 1 Protein’s Flagship Premium Protein

By using super-pure 100% whey isolate and fast-acting whey hydrolysate, while completely omitting the use of whey concentrates, creamers, gums, and other fillers, we’re left with an industry leading Protein Purity Percentage (PPP) of up to 87%*. Gram for gram, R1 Protein has more fast-acting whey protein per unit of volume…period.

25g protein, 6g BCAAs, less than or equal to 120 calories

As Pure As It Gets

With 25g of protein and over 6g of BCAAs — entirely from intact and hydrolyzed whey protein isolates — R1 Protein helps support the recovery and growth aspirations of the most ardent muscle builders.*

Our flagship protein for: muscle recovery, strength training

Our Flagship Protein

Our fast-acting combination of whey isolate and hydrolyzed whey isolate (and virtually nothing else) supports muscle repair and recovery.*

Informed Choice banned substance tested

Informed Choice® Certified

Regularly tested for banned substances by the world class sports anti-doping lab, LGC.

R1 Protein family shot footer
Reviews
Overall Rating
4.8 out of 5 stars
Reviews (710)
Verified Buyers (704)
Review Graph
  • 5 star
    91%

  • 4 star
    7%

  • 3 star
    1%

  • 2 star
    0%

  • 1 star
    1%

Top Rated Flavors
  • Vanilla Crème Naturally Flavored (5/5 )
  • Lightly Salted Caramel (5/5 )
  • Mint Chocolate Chip (5/5 )
  • Vanilla Creme (4.9/5 )
  • Strawberry Banana (4.9/5 )
  • Cafe Mocha (4.9/5 )
  • Chocolate Peanut Butter (4.8/5 )
  • Chocolate Fudge (4.8/5 )
  • Vanilla Butter Cake (4.7/5 )
  • Frozen Banana (4.7/5 )
  • Cookies & Creme (4.7/5 )
  • Strawberries & Creme (4.7/5 )
  • Red Velvet (4.4/5 )
  • Fruity Cereal (4.2/5 )
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Overall Rating
  • Chocolate Peanut Butter
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Maxwell M
Verified Buyer
Good taste with high quality ingredients. Mixes easily and has great macros.*
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2025-10-08 11:10:22Z
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Overall Rating
  • Chocolate Fudge
  • Vanilla Creme
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Carie B
Verified Buyer
Love this protein! Has a great flavor & doesn’t upset my tummy*
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2025-10-08 11:10:22Z
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Overall Rating
  • Vanilla Creme
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William B
Verified Buyer
Mixes easy with ice and almond milk. Neutral taste. Low in cholesterol.*
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2025-09-30 10:02:55Z
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Overall Rating
  • Chocolate Fudge
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Patrick M
Verified Buyer
Tastes great and mixes well with water or milk. Best prices available here at M&S.*
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2025-09-24 13:03:28Z
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  • Chocolate Fudge
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Rashid N
Increase Strength
Verified Buyer
really good flavor no bloating i mix it with milk and its perfect taste*
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0 of 0 found this helpful
2025-09-22 13:46:27Z
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Overall Rating
  • Fruity Cereal
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Matt S
Burn Fat
Verified Buyer
Been using Rule 1 for years now and i love all the flavors. Macros are elite too*
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0 of 0 found this helpful
2025-09-16 14:20:39Z
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Overall Rating
  • Fruity Cereal
  • Vanilla Creme
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Kris O
Verified Buyer
Freom what I understand Rule 1 is supposed to be a high quality protien*
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0 of 0 found this helpful
2025-09-16 10:04:18Z
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Overall Rating
  • Chocolate Peanut Butter
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Robert R
Burn Fat
Verified Buyer
Best protein powder I’ve had!  Mix it with berries , AWESOME!! *
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1 of 1 found this helpful
2025-09-05 13:43:19Z
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Overall Rating
  • Chocolate Fudge
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shawn g
Verified Buyer
Been using this product for awhile now and its the best when it comes to mixing in food, no bloating, amino breakdown and overall clean list of ingredients.*
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0 of 0 found this helpful
2025-08-27 12:28:48Z
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Overall Rating
  • Vanilla Creme
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Shane S
Build Muscle
Verified Buyer
Mixes great with milk and water and taste it awesome as well. Definitely my go to protein!!!*
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2025-08-18 10:35:40Z
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* Muscle & Strength does not imply any medical claims from this review. There are no guarantees of specific results and results may vary.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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