$109.95 – $289.95Price range: $109.95 through $289.95
A premium, fast-absorbing protein made entirely from whey isolates and hydrolysed isolate for lean muscle recovery with minimal carbs and fat.
✓ 25g fast-acting protein per serve
✓ 6g+ BCAAs + 12g EAAs for recovery
✓ Next to none lactose
Payment Methods:
Rule 1 Proteins Is Now Available Online In Australia At Muscle Maker Supplements
With state-of-the-art production facility in Aurora, Illinois. Rule 1 is one of the few sports nutrition companies to manufacture in every product category. From the very beginning, Rule 1 has always taken a hands-on approach to maintaining the very highest standards of quality.
We are Athletes, Bodybuilders, Crossfitters & Powerlifters. Guys who've lifted a few million lbs & downed a few thousand scoops of protein. We're also supplement pros who've done this before. Guys who know the difference between the good stuff & the over-hyped wannabes. For those who are serious about getting the best out of lifting are obsessed with 1 thing. Protein. And a quick comparison of top-selling brands shows R1 Proteins delivers more of what we all take protein for...protein!
Shop The Range With Afterpay, Zippay & Klarna Options Available!
Tasty Shake: Mix one heaping scoop of R1 Protein with approximately 6-8oz of water, milk or your favourite beverage in a shaker cup or glass with a spoon.
Juicy Smoothie: Add your favourite fruit and ice to the above, mix in blender and enjoy.
Quick Breakfast: Stir one scoop into oats or yogurt for a fortified start to the day.
Hydrolysed Whey Protein Concentrate (HWPI)
Hydrolyzed whey protein isolate is whey protein that has been processed to break down the protein into smaller peptides for faster absorption and digestion, making it ideal for post-workout recovery and muscle growth. It's a highly refined form of whey protein, offering a high protein content with minimal fats and carbohydrates
Whey Protein Isolate (WPI)
Clinically studied for its role in fat metabolism and recovery, this form supports energy production, reduces muscle soreness, and promotes lean muscle preservation.
Protein - 25g
Carbs - 1g
Fat - 0g
Calories - 110
Ultra-Pure, Fast-Absorbing Protein for Lean Muscle & Peak Performance
Fuel your muscles with R1 Protein (WPI) by Rule 1 Proteins, a premium-grade protein designed for athletes, bodybuilders, and fitness enthusiasts who demand maximum protein purity and performance. Made using advanced cold microfiltration and ion-exchange processes, R1 WPI delivers one of the cleanest whey protein isolates on the market.
R1 WPI is formulated for those who want high protein content with minimal carbs, fats, and lactose, making it ideal for lean muscle building, fat loss, and post-workout recovery.
WHY USE R1 PROTEIN?
WPI + HWPI – The purest form of digestable whey protein. Whey Protein Isolate and Hydrolised Whey Protein Isolate.
Fast-Digesting & Easily Absorbed for rapid muscle recovery
Low Fat, Low Carb, Low Sugar – Perfect for cutting and clean bulking
Virtually Lactose-Free – Gentle on digestion
Rich in BCAAs & Essential Amino Acids to support muscle growth
Mixes Instantly – Smooth, great taste with no clumps
UNRIVALED FLAVOURS – With 18 flavours to choose from, there is something for everyone no matter how picky you may be. With a smooth, thinner-like texture.
Clean Nutrition You Can Trust
R1 WPI is tested to ensure label accuracy and quality, so what you see is exactly what you get. No amino spiking, no unnecessary fillers—just pure, high-quality whey protein isolate to help you train harder and recover faster.
Perfect For:
-
Post-workout muscle recovery
-
Lean muscle growth and strength training
-
Low-carb, low-fat, or calorie-controlled diets
-
Athletes with lactose sensitivity
Rule 1 Proteins is known worldwide for exceptional quality control, premium ingredients, and transparent labeling—making R1 WPI a trusted choice for serious performance nutrition
Ultra-Pure, Fast-Absorbing Protein for Lean Muscle & Peak Performance
Fuel your muscles with R1 Protein (WPI) by Rule 1 Proteins, a premium-grade protein designed for athletes, bodybuilders, and fitness enthusiasts who demand maximum protein purity and performance. Made using advanced cold microfiltration and ion-exchange processes, R1 WPI delivers one of the cleanest whey protein isolates on the market.
R1 WPI is formulated for those who want high protein content with minimal carbs, fats, and lactose, making it ideal for lean muscle building, fat loss, and post-workout recovery.
WHY USE R1 PROTEIN?
WPI + HWPI – The purest form of digestable whey protein. Whey Protein Isolate and Hydrolised Whey Protein Isolate.
Fast-Digesting & Easily Absorbed for rapid muscle recovery
Low Fat, Low Carb, Low Sugar – Perfect for cutting and clean bulking
Virtually Lactose-Free – Gentle on digestion
Rich in BCAAs & Essential Amino Acids to support muscle growth
Mixes Instantly – Smooth, great taste with no clumps
UNRIVALED FLAVOURS – With 18 flavours to choose from, there is something for everyone no matter how picky you may be. With a smooth, thinner-like texture.
Clean Nutrition You Can Trust
R1 WPI is tested to ensure label accuracy and quality, so what you see is exactly what you get. No amino spiking, no unnecessary fillers—just pure, high-quality whey protein isolate to help you train harder and recover faster.
Perfect For:
-
Post-workout muscle recovery
-
Lean muscle growth and strength training
-
Low-carb, low-fat, or calorie-controlled diets
-
Athletes with lactose sensitivity
Rule 1 Proteins is known worldwide for exceptional quality control, premium ingredients, and transparent labeling—making R1 WPI a trusted choice for serious performance nutrition
Rule 1 Proteins Is Now Available Online In Australia At Muscle Maker Supplements
With state-of-the-art production facility in Aurora, Illinois. Rule 1 is one of the few sports nutrition companies to manufacture in every product category. From the very beginning, Rule 1 has always taken a hands-on approach to maintaining the very highest standards of quality.
We are Athletes, Bodybuilders, Crossfitters & Powerlifters. Guys who've lifted a few million lbs & downed a few thousand scoops of protein. We're also supplement pros who've done this before. Guys who know the difference between the good stuff & the over-hyped wannabes. For those who are serious about getting the best out of lifting are obsessed with 1 thing. Protein. And a quick comparison of top-selling brands shows R1 Proteins delivers more of what we all take protein for...protein!
Shop The Range With Afterpay, Zippay & Klarna Options Available!
Tasty Shake: Mix one heaping scoop of R1 Protein with approximately 6-8oz of water, milk or your favourite beverage in a shaker cup or glass with a spoon.
Juicy Smoothie: Add your favourite fruit and ice to the above, mix in blender and enjoy.
Quick Breakfast: Stir one scoop into oats or yogurt for a fortified start to the day.
Hydrolysed Whey Protein Concentrate (HWPI)
Hydrolyzed whey protein isolate is whey protein that has been processed to break down the protein into smaller peptides for faster absorption and digestion, making it ideal for post-workout recovery and muscle growth. It's a highly refined form of whey protein, offering a high protein content with minimal fats and carbohydrates
Whey Protein Isolate (WPI)
Clinically studied for its role in fat metabolism and recovery, this form supports energy production, reduces muscle soreness, and promotes lean muscle preservation.
Protein - 25g
Carbs - 1g
Fat - 0g
Calories - 110
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About The Brand
Rule 1 Proteins Is Now Available Online In Australia At Muscle Maker Supplements
With state-of-the-art production facility in Aurora, Illinois. Rule 1 is one of the few sports nutrition companies to manufacture in every product category. From the very beginning, Rule 1 has always taken a hands-on approach to maintaining the very highest standards of quality.
We are Athletes, Bodybuilders, Crossfitters & Powerlifters. Guys who've lifted a few million lbs & downed a few thousand scoops of protein. We're also supplement pros who've done this before. Guys who know the difference between the good stuff & the over-hyped wannabes. For those who are serious about getting the best out of lifting are obsessed with 1 thing. Protein. And a quick comparison of top-selling brands shows R1 Proteins delivers more of what we all take protein for...protein!
Shop The Range With Afterpay, Zippay & Klarna Options Available!

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Jacob Crawford –
Getting more expensive every year but with the Muscle Maker discounts i always come back to this. Salted Caramel is legit the best protein of all time!