Skip to product information
  • Front of a black protein powder tub with a large orange 1 logo and Whey Isolate text
  • Black plastic jar of milk chocolate flavored protein powder with orange and white label
  • Black protein powder container with orange label showing chocolate flavor Contains 25g protein 100 whey isolate
  • Black protein powder container with a black lid and an orange and white label displaying Banana Creme flavor details
  • Black tub of protein powder with an orange label displaying RULE 1 WHEY ISOLATE and nutritional facts
  • Large black tub of protein powder with an orange label displaying RULE 1 WHEY ISOLATE and nutritional facts
  • Black protein powder container with a black lid and an orange and white label displaying Birthday Cake flavor details
  • Black protein powder container with a black lid and an orange and white label displaying Birthday Cake flavor details
  • Black protein powder container with a black lid and an orange and white label displaying Chocolate Fudge flavor details
  • A black plastic tub of protein powder with an orange and white label The flavor shown is Chocolate Fudge
  • Black protein powder container with a black lid and an orange and white label displaying Banana Creme flavor details
  • Black protein powder container with a black lid and an orange and white label displaying Cafe Mocha flavor details
  • Black protein powder container with a black lid and an orange and white label displaying Cafe Mocha flavor details
  • Black plastic tub with orange label and Mint Chocolate Chip graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Mint Chocolate Chip graphic Contains R1 Protein Whey Isolate
  • A large black plastic tub of protein powder with an orange and white label The flavor shown is Cookies Creme
  • A black plastic tub of protein powder with an orange and white label The flavor shown is Cookies Creme
  • A large black plastic tub of protein powder with an orange and white label The flavor shown is Chocolate Peanut Butter
  • A black plastic tub of protein powder with an orange and white label The flavor shown is Chocolate Peanut Butter
  • Black plastic tub with orange label and Punky Patches graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Fruity Cereal graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Orange Dreamsicle graphic Contains R1 Protein Whey Isolate
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Crème
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Crème
  • Black tub of protein powder with an orange and white label Flavor is Strawberry Banana
  • Black plastic tub with orange label and Strawberry Banana graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Salted Caramel graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Salted Caramel graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Strawberries Creme graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Strawberries Creme graphic Contains R1 Protein Whey Isolate
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Butter Cake
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Butter Cake
  • Black tub with an orange label displaying RULE 1 and WHEY ISOLATE text for protein powder
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label pistachio ice cream flavor
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label vanilla creme flavor
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label chocolate fudge flavor
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label birthday cake flavor
  • Front view of a black protein powder tub with an orange label showing 25g Protein and Mint Chocolate Chip flavor
  • Front view of a black protein powder tub with an orange label showing 25g Protein and Chocolate Peanut Butter flavor
  • Front view of a black protein powder tub with an orange label showing 25g Protein and Cookies Creme flavor
  • Front of a black protein powder tub with an orange and white label featuring a coffee cup graphic
  • Front of a black protein powder tub with an orange and white label featuring a blue and white candy graphic
  • Front of a black protein powder tub with an orange and white label featuring a strawberry and banana graphic
  • Front of black protein tub with Rule 1 logo Whey Isolate text and Salted Caramel flavor label
  • Front of black protein tub with Rule 1 logo Whey Isolate text and Banana Creme flavor label
  • Front of black protein tub with Rule 1 logo Whey Isolate text and Strawberries Creme flavor label
  • Front of black protein powder tub with orange label showing Orange Dreamsicle flavor and nutrition facts
  • Front of black protein powder tub with orange label showing Vanilla Butter Cake flavor and nutrition facts
  • Front of a large black protein powder tub with orange label showing Milk Chocolate flavor and nutrition facts
  • Front of a large black protein powder tub with orange label showing Pistachio Ice Cream flavor and nutrition facts
  • Front of R1 Protein Whey Isolate tub vanilla creme flavor 42 6 oz with 25g protein per serving
  • Front of a black and orange protein powder tub with a Chocolate Fudge flavor label
  • Front of a black and orange protein powder tub with a Birthday Cake flavor label
  • Front view of a large black protein tub with an orange label showing R1 Rule Whey Isolate Mint Chocolate Chip
  • Front view of a large black protein tub with an orange label showing R1 Rule Whey Isolate Chocolate Peanut Butter
  • Front view of a large black protein tub with an orange label showing R1 Rule Whey Isolate Cookies Creme
  • Black tub of Rule 1 Protein Whey Isolate in Cafe Mocha flavor with orange and white label
  • Black tub of Rule 1 Protein Whey Isolate in Fruity Cereal flavor with orange and white label
  • Black tub of Rule 1 Protein Whey Isolate in Strawberry Banana flavor with orange and white label
  • Black tub of Rule 1 Protein Whey Isolate in Salted Caramel flavor with orange and white label
  • Black protein powder tub with orange label Banana Cr me flavor and 25G Protein 100 Whey Isolate text
  • Black protein powder tub with orange label Strawberries Cr me flavor and 25G Protein 100 Whey Isolate text
  • Black protein powder tub with orange label Orange Creamsicle flavor and 25G Protein 100 Whey Isolate text
  • A large black tub of Rule One protein powder with an orange and white label that reads R1 Protein Whey Isolate
  • Front of a black protein powder tub with an orange label Strawberry Kiwi flavor is shown
  • Front of a black protein powder tub with an orange label Salted Caramel flavor is displayed
  • Front of a large black protein powder tub with an orange label Salted Caramel flavor is highlighted
  • Black container of R1 Protein Whey Isolate with banana cream flavor label Orange graphic and text
  • Black container of R1 Protein Whey Isolate with vanilla butter cake flavor label Orange graphic and text
  • Black container of R1 Protein Whey Isolate with cafe mocha flavor label Orange graphic and text
  • Black container of R1 Protein Whey Isolate with mint chocolate chip flavor label Orange graphic and text
  • Black protein powder container with a large orange number 1 logo Label details include 25g protein 100 whey isolate
  • Black protein powder container with a large orange number 1 logo Label details include 25g protein 100 whey isolate
  • Black protein powder container with a large orange number 1 logo Label details include 25g protein 100 whey isolate
  • Front of a black protein powder tub with an orange and white label showing product details
  • Front of a black protein powder tub with an orange and white label showing product details
  • Front of a black protein powder tub with an orange and white label showing product details
  • Black protein powder container with orange label showing chocolate peanut butter flavor Contains 25g protein 100 whey
  • Black protein powder container with orange label showing chocolate peanut butter flavor Contains 25g protein 100 whey
  • Black protein powder container with orange label showing pistachio ice cream flavor Contains 25g protein 100 whey
  • Large black tub of protein powder with an orange label showing Rule 1 and Whey Isolate Cookies Crème
  • Front view of a black protein powder tub with an orange and white label featuring the number 1 logo
  • Front view of a black protein powder tub with an orange and white label featuring the number 1 logo
  • Front view of a black protein powder tub with an orange and white label featuring the number 1 logo
  • Front of a black protein powder tub with orange and white label displaying product name and chocolate fudge flavor
  • Front of a black protein powder tub with orange and white label displaying product name and chocolate fudge flavor
  • Black plastic tub of R1 Protein Whey Isolate banana creme flavor with an orange and white label on the front
  • Front of a black tub with an orange and white label showing a birthday cake graphic and protein details
  • Front of a black tub with an orange and white label showing a coffee cup graphic and protein details
  • Front of a black protein powder tub with a large orange 1 logo and Whey Isolate text
  • Front of a black protein powder tub with a large orange 1 logo and Whey Isolate text
  • Black protein powder container with an orange 1 RULE logo and a blue Fruity Cereal label on the front
  • Black protein powder container with an orange 1 RULE logo and a brown Milk Chocolate label on the front
  • Black protein powder container with an orange 1 RULE logo and a green Mint Chocolate Chip label on the front
  • Black container of Rule 1 Protein Whey Isolate in Orange Dreamsicle flavor 25g protein 22 servings
  • Black container of Rule 1 Protein Whey Isolate in Pistachio Ice Cream flavor 25g protein 22 servings
  • Black container of Rule 1 Protein Whey Isolate in Salted Caramel flavor 25g protein 22 servings
  • Black container of Rule 1 Protein Whey Isolate in Strawberries Cream flavor 25g protein 22 servings
  • Black container with orange and white label displaying 1 Rule logo and product details including Strawberry Banana
  • Black container with orange and white label displaying 1 Rule logo and product details including Vanilla Butter Cake
  • Black container with orange and white label displaying 1 Rule logo and product details including Vanilla Creme flavor
  • Black protein powder tub with a large orange number 1 logo A banana creme flavor label is on the front
  • Black protein powder tub with a large orange number 1 logo A birthday cake flavor label is on the front
  • Black protein powder tub with a large orange number 1 logo A cafe mocha flavor label is on the front
  • Black protein powder container with a red and orange label highlighting Chocolate Fudge flavor and 25g protein
  • Black protein powder container with a red and orange label highlighting Chocolate Peanut Butter flavor and 25g protein
  • Black protein powder container with a red and orange label highlighting Cookies Cr mme flavor and 25g protein
  • Front view of a black protein powder tub with a black lid and an orange label highlighting the flavor Fruity Cereal
  • Front view of a black protein powder tub with a black lid and an orange label highlighting the flavor Milk Chocolate
  • Front view of a black protein powder tub with a black lid and an orange label highlighting the flavor Mint Chocolate
  • Front of a black protein powder tub with an orange and white label featuring a large orange 1 logo
  • Front of a black protein powder tub with an orange and white label featuring a large orange 1 logo
  • Front of a black protein powder tub with an orange and white label featuring a large orange 1 logo
  • Front of black tub of R1 Rule 1 protein powder Strawberry and Creme flavor with orange and white label
  • Front of black tub of R1 Rule 1 protein powder Strawberry Banana flavor with orange and white label
  • Front of black tub of R1 Rule 1 protein powder Vanilla Butter Cake flavor with orange and white label
  • Front of black tub of R1 Rule 1 protein powder Vanilla Creme flavor with orange and white label
  • Front of a black protein powder tub with an orange stripe and brand logo
  • Front of a black protein powder tub with an orange stripe and brand logo
  • Front of a black protein powder tub with an orange stripe and brand logo
  • Black and orange container of Rule 1 Protein Whey Isolate in Chocolate Peanut Butter flavor 80 2 oz
  • Black and orange container of Rule 1 Protein Whey Isolate in Cookies Creme flavor 79 4 oz
  • Black and orange container of Rule 1 Protein Whey Isolate in Milk Chocolate flavor 80 2 oz
  • Black and orange container of Rule 1 Protein Whey Isolate in Mint Chocolate Chip flavor 80 1 oz
  • Front of a black protein powder tub with an orange band and the text WHEY ISOLATE
  • Front of a black protein powder tub with an orange band showing WHEY ISOLATE and Strawberries Crème
  • Black protein powder tub with an orange label The label reads R1 Protein Whey Isolate Vanilla Crème
  • Black protein powder container with an orange label front view showing nutritional claims and flavor
  • Black protein powder container with an orange label front view showing nutritional claims and flavor
  • Front of a black protein powder tub with a large orange 1 logo and Whey Isolate text
  • Black plastic jar of milk chocolate flavored protein powder with orange and white label
  • Black protein powder container with orange label showing chocolate flavor Contains 25g protein 100 whey isolate
  • Black protein powder container with a black lid and an orange and white label displaying Banana Creme flavor details
  • Black tub of protein powder with an orange label displaying RULE 1 WHEY ISOLATE and nutritional facts
  • Black protein powder container with a black lid and an orange and white label displaying Birthday Cake flavor details
  • Black protein powder container with a black lid and an orange and white label displaying Chocolate Fudge flavor details
  • A black plastic tub of protein powder with an orange and white label The flavor shown is Chocolate Fudge
  • Black protein powder container with a black lid and an orange and white label displaying Banana Creme flavor details
  • Black protein powder container with a black lid and an orange and white label displaying Cafe Mocha flavor details
  • Black plastic tub with orange label and Mint Chocolate Chip graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Mint Chocolate Chip graphic Contains R1 Protein Whey Isolate
  • A large black plastic tub of protein powder with an orange and white label The flavor shown is Cookies Creme
  • A black plastic tub of protein powder with an orange and white label The flavor shown is Cookies Creme
  • A large black plastic tub of protein powder with an orange and white label The flavor shown is Chocolate Peanut Butter
  • A black plastic tub of protein powder with an orange and white label The flavor shown is Chocolate Peanut Butter
  • Black plastic tub with orange label and Fruity Cereal graphic Contains R1 Protein Whey Isolate
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Crème
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Crème
  • Black plastic tub with orange label and Strawberry Banana graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Salted Caramel graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Salted Caramel graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Strawberries Creme graphic Contains R1 Protein Whey Isolate
  • Black plastic tub with orange label and Strawberries Creme graphic Contains R1 Protein Whey Isolate
  • Black tub of protein powder with an orange and white label Flavor is Vanilla Butter Cake
  • Black tub with an orange label displaying RULE 1 and WHEY ISOLATE text for protein powder
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label pistachio ice cream flavor
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label vanilla creme flavor
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label chocolate fudge flavor
  • Black protein powder tub with a red and white Rule 1 Whey Isolate label birthday cake flavor
  • Front view of a black protein powder tub with an orange label showing 25g Protein and Mint Chocolate Chip flavor
  • Front view of a black protein powder tub with an orange label showing 25g Protein and Chocolate Peanut Butter flavor
  • Front view of a black protein powder tub with an orange label showing 25g Protein and Cookies Creme flavor
  • Front of a black protein powder tub with an orange and white label featuring a coffee cup graphic
  • Front of a black protein powder tub with an orange and white label featuring a blue and white candy graphic
  • Front of a black protein powder tub with an orange and white label featuring a strawberry and banana graphic
  • Front of black protein tub with Rule 1 logo Whey Isolate text and Salted Caramel flavor label
  • Front of black protein tub with Rule 1 logo Whey Isolate text and Banana Creme flavor label
  • Front of black protein tub with Rule 1 logo Whey Isolate text and Strawberries Creme flavor label
  • Front of black protein powder tub with orange label showing Orange Dreamsicle flavor and nutrition facts
  • Front of black protein powder tub with orange label showing Vanilla Butter Cake flavor and nutrition facts
  • Front of a large black protein powder tub with orange label showing Milk Chocolate flavor and nutrition facts
  • Front of a large black protein powder tub with orange label showing Pistachio Ice Cream flavor and nutrition facts
  • Front of R1 Protein Whey Isolate tub vanilla creme flavor 42 6 oz with 25g protein per serving
  • Front of a black and orange protein powder tub with a Chocolate Fudge flavor label
  • Front of a black and orange protein powder tub with a Birthday Cake flavor label
  • Front view of a large black protein tub with an orange label showing R1 Rule Whey Isolate Mint Chocolate Chip
  • Front view of a large black protein tub with an orange label showing R1 Rule Whey Isolate Chocolate Peanut Butter
  • Front view of a large black protein tub with an orange label showing R1 Rule Whey Isolate Cookies Creme
  • Black tub of Rule 1 Protein Whey Isolate in Cafe Mocha flavor with orange and white label
  • Black tub of Rule 1 Protein Whey Isolate in Fruity Cereal flavor with orange and white label
  • Black tub of Rule 1 Protein Whey Isolate in Strawberry Banana flavor with orange and white label
  • Black tub of Rule 1 Protein Whey Isolate in Salted Caramel flavor with orange and white label
  • Black protein powder tub with orange label Banana Cr me flavor and 25G Protein 100 Whey Isolate text
  • Black protein powder tub with orange label Strawberries Cr me flavor and 25G Protein 100 Whey Isolate text
  • Black protein powder tub with orange label Orange Creamsicle flavor and 25G Protein 100 Whey Isolate text
  • A large black tub of Rule One protein powder with an orange and white label that reads R1 Protein Whey Isolate
  • Front of a large black protein powder tub with an orange label Salted Caramel flavor is highlighted
  • Black container of R1 Protein Whey Isolate with cafe mocha flavor label Orange graphic and text
  • Black container of R1 Protein Whey Isolate with mint chocolate chip flavor label Orange graphic and text
  • Black protein powder container with a large orange number 1 logo Label details include 25g protein 100 whey isolate
  • Front of a black protein powder tub with an orange and white label showing product details
  • Black protein powder container with orange label showing chocolate peanut butter flavor Contains 25g protein 100 whey
  • Large black tub of protein powder with an orange label showing Rule 1 and Whey Isolate Cookies Crème
  • Front view of a black protein powder tub with an orange and white label featuring the number 1 logo
  • Front of a black protein powder tub with orange and white label displaying product name and chocolate fudge flavor
  • Black protein powder tub with a large orange number 1 logo A banana creme flavor label is on the front
  • Black protein powder container with an orange label front view showing nutritional claims and flavor
  • Black protein powder container with an orange label front view showing nutritional claims and flavor

R1 Protein Whey Isolate

100% Whey Isolate*
$44.99
$44.99
R1 Protein Whey Isolate is made with super-pure whey isolate, fast-acting partially hydrolyzed whey isolate, and virtually nothing else. This elite formula completely omits the use of whey protein concentrates, creamers, amino spiking, banned substances, and other things that dilute what you really came for – protein. Even better, it tastes great too.


Flavor Chocolate Fudge
Approx Size
Black container of Strawberry Blast flavored protein powder with an orange label sitting on a wooden box

“The R1 Protein is top of the line. Doesn't get much better than this.”

- Benquil


WHAT'S R1 PROTEIN WHEY ISOLATE?

Our Flagship Protein


Premium whey protein isolates provide 12 grams of essential amino acids (EAAs), including 6 grams of BCAAs, to assist muscle recovery and rebuilding.†◆^^
WHAT'S IN IT
Pure & Complete
Built for pure performance, each scoop of R1 Protein Whey Isolate delivers 25 grams of nutritionally complete protein with single-digit carbs and 1 gram of fat or fewer. No shortcuts. Just highly concentrated nutrition to support your active lifestyle. †^^

 

  • 25g fast-acting protein†
  • 100% of protein from whey isolates and hydrolysate isolates
  • 6g+ BCAAs†^^ 



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


 

† Per serving

* 100% of protein from whey isolate.

^^ Amino acids are naturally occurring.

◆ When used consistently over time and combined with diet and exercise.
Product appearance & nutrition facts may vary slightly depending on packaging.



Warnings
SELECT FLAVOR
A hand pouring protein powder from a black scoop into a white shaker bottle with the container next to it

WHEN & HOW TO USE IT

Anytime

Before or after workouts, first thing in the morning, or between meals, R1 Protein Whey Isolate is a great go-to whenever you want to add quick, high-quality protein to your daily routine.

Directions: Mix about one scoop of R1 Protein Whey Isolate with 6–8 oz. of cold water, milk, or your favorite beverage in a shaker cup or a glass with a spoon. For added variety, blend with fruit or mix into cereal or yogurt.

FREQUENTLY BOUGHT TOGETHER

Black plastic jar of pre-workout supplement with a large stylized 1 in red to blue gradient

PreLift

View Product
Black bottle with a black cap and white and blue label displaying MENS MULTI and active ingredient details

Men's Multi

View Product
Black tub and bottle of creatine supplement with a white and black label

Creatine

View Product
Black jar with a blue label featuring a large 1 RULE logo and Clear Whey Isolate text

Clear Whey Isolate

View Product
Black protein powder tub with a purple label and chocolate fudge flavor graphic

Casein Protein

View Product

QUALITY IS RULE 1. SUPERIOR VALUE IS RESULT

As one of few brands who actually makes the advanced formulas we bring to market, Rule 1 Proteins is in a unique position to maintain complete control through every step in the process.

LEARN ABOUT OUR QUALITY
QUALITY IS RULE 1. SUPERIOR VALUE IS RESULT