7 Day Customer Support
  • Live Chat
  • 1-800-537-9910
USD
R1 Protein

Rule 1 R1 Protein Isolate

A Product
Industry Leading Protein With Zero Sacrifices in Taste!
  • 25 grams of protein per serving
  • Zero concentrates, creamers or gums
  • 100% Isolate & Hydrolysate
  • 6g BCAAs and 4g Glutamine
Muscle & Strength Rewards

Earn 2 points for every dollar you spend at Muscle & Strength! Spend your points on order discounts, fitness gear and exclusive products.

Unbeatable Deals

We run the best deals and discounts on the biggest nutrition and fitness brands!

Free Shipping on $99+ Orders*

Spend $99 to get FREE shipping in addition to our unbeatable deals! Plus, 100% money-back guarantee on every product we sell.

*USA Only. Excludes: AK, HI, orders above 25lbs and bulk orders.

60 Day Guarantee

Not happy with your purchase? No problem. Simply return it to us within 60 days and we'll replace it, credit your account, or give you a full refund.

Contact Us

If you have any questions about products please call us on 1-800-537-9910 or email support@muscleandstrength.com

Deals
FREE R1 BCAAS 30SV
FREE R1 BCAAS 30SV
Buy 1 Rule 1 R1 Protein Isolate 2lbs and get 1 R1 BCAAs 30sv absolutely FREE! Limited time only.
Price Cut + FREE R1 BCAAS 30SV
Price Cut + FREE R1 BCAAS 30SV
Buy 1 Rule 1 R1 Protein Isolate 5lbs and get 1 Rule 1 R1 BCAAs 30sv absolutely FREE! Limited time only.
Buying Options
$19.99 19.9900
1lb
16 Servings | $1.25 Per Serving
+
$49.99 49.9900
2lbs
38 Servings | $1.32 Per Serving
FREE R1 BCAAS 30SV
+
$73.99 73.9900
5lbs
76 Servings | $0.97 Per Serving
Price Cut + FREE R1 BCAAS 30SV
+
 
Nutrition Info

1lb Chocolate Fudge

Serving Size: 1 Scoop
Servings Per Container: 16
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 Isolate

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 with zero sacrifices when it comes to taste.*

RULE ONE PROTEINS™ COMMITMENT TO QUALITY

Since day one, Rule 1 Proteins™ has proven that exceptional quality and superior value aren’t mutually exclusive. We develop our own products, source the finest ingredients, and manufacture them in a FDA-inspected, NSF/GMP-compliant, and Informed-Choice certified facility. Streamlining and tightly controlling every phase of the process, from start to finish, enables us to offer premium products without the premium price.

Reviews
Overall Rating
4.8 out of 5 stars
Reviews (197)
Verified Buyers (194)
Review Graph
  • 5 star
    90%

  • 4 star
    7%

  • 3 star
    3%

  • 2 star
    0%

  • 1 star
    0%

Top Rated Flavors
  • Lightly Salted Caramel (5/5 )
  • Vanilla Creme (4.9/5 )
  • Strawberries & Creme (4.8/5 )
  • Chocolate Fudge (4.8/5 )
  • Cookies & Creme (4.7/5 )
  • Chocolate Peanut Butter (4.7/5 )
  • Vanilla Butter Cake (4.6/5 )
  • Frozen Banana (4.6/5 )
  • Red Velvet (4.4/5 )
  • Fruity Cereal (4.1/5 )
  • Show More +
    Show Less -
Overall Rating
  • Chocolate Peanut Butter
  • Show More +
    Show Less -
User Image
Jacob O
Verified Buyer
This is a good value protein. The flavor is good but not the best I’ve ever had. You will definitely not be disappointed in purchasing this protein. *
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-08-31 20:26:56Z
Overall Rating
  • Lightly Salted Caramel
  • Show More +
    Show Less -
User Image
Alexander
Verified Buyer
I was excited to try Rule 1 for the first time because it has excellent reviews and it's just protein, which is surprisingly hard to find. When it showed up I noticed a "may contain lead" sticker stuck to the tub. Which was slightly concerning so after a quick google search I found out why, it does contain lead, or at least the stuff the state tested did. Now to be fair there are heavy metals in just about everything and when you make a concentrate, like say for example a protein powder, you concentrate the other stuff too. Did it stop me from drinking it? No, but it is a good reminder that anytime we purify something (IE Protein isolate) you end up with other stuff in the mix that is difficult to remove. All that said, I still drank it so to each their own I just feel like a review wouldn't be complete without first touching on the warning sticker (and a reminder that almost all protein powder contains heavy metals). The protein flavor itself was amazing, I had lightly salted caramel and it tasted exactly like I would expect caramel to taste, so spot on there. They add in lecithin, which is an emulsifier, which means it helps everything mix and it definitely does its job. I was almost consistently left with a smooth shake, not always. It was surprisingly thicker than some of the other stuff I drink, but that may be the lecithin and you can adjust your milk/water/favorite liquid ratio to get it dialed in to your liking, but it's good to have a heads up for the first time to adjust accordingly. The TL;DR rating: Mixability: 8/10 Taste: 10/10 Ingredients: 10/10 4 out of 5 stars Overall a great protein that focuses on flavor instead of other gimmicks to stand out from the overloaded market, which ironically is a rare thing. While the prop 65 sticker is a little scary, I would still order another round, but it is nice to be reminded that everything should be taken in moderation.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-08-29 19:57:15Z
Overall Rating
  • Chocolate Fudge
  • Show More +
    Show Less -
User Image
Nicholas B
Verified Buyer
Great flavor and mixes up well. Always great stuff from R1. *
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-08-28 05:24:30Z
Overall Rating
  • Vanilla Creme
  • Show More +
    Show Less -
User Image
Azm I
Verified Buyer
Great, if not for the lead warning. BE AWARE there is a prop 65 warning on the container that is not advertised here.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-08-25 05:42:34Z
Overall Rating
  • Vanilla Creme
  • Show More +
    Show Less -
User Image
James H
Verified Buyer
Protein tastes great. Mixes well and takes great in a shake with fruit!*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-08-02 15:32:16Z
Overall Rating
  • Fruity Cereal
  • Show More +
    Show Less -
User Image
Hugo G
Build Muscle
Verified Buyer
Everything in this protein is great fruity cereal Flavor is awful *
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-07-30 16:48:42Z
Overall Rating
  • Chocolate Fudge
  • Show More +
    Show Less -
User Image
Vincenzo M
Verified Buyer
I used for over a year and I like it. Chocolate is good and no filler is great for me*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-07-24 17:37:13Z
Overall Rating
  • Vanilla Creme
  • Show More +
    Show Less -
User Image
Milo N
Verified Buyer
This is a great product the taste is great too. Instant absorption after a hard workout.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-07-06 22:53:44Z
Overall Rating
  • Chocolate Fudge
  • Show More +
    Show Less -
User Image
All Might
Verified Buyer
It's a solid protein, that's for sure. The flavour is okay, just taste like a light chocolate powder mix. *
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-06-27 03:16:17Z
Overall Rating
  • Chocolate Fudge
  • Show More +
    Show Less -
User Image
Jacob K
Verified Buyer
So far my favorite protein. Taste good and mixes very well. I use whey isolate because it doesn’t mess up my stomach and this is by far the smoothest power I’ve had. The serving size to protein ratio is also very high. *
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2021-06-12 14:59:21Z
* 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.

Which products should we notify you about?


  • Loading product choices...
Text Message Alert
+1