R1 Protein WPI 5lbs by Rule 1

Size: 2.27KG - 5.0LB
Flavour: Cafe Mocha
$174.95 $199.95


R1 Protein WPI 5lbs by Rule 1

R1 Protein by Rule 1 is a fast-absorbing whey protein isolate designed for the everyday athlete. Formulated from only the purest whey protein hydrolysate, R1 Protein is naturally low in carbohydrates and fats and easy for our body’s digestive system to break down, making it ultra-fast for our body to transport and utilise for muscle recovery and repair.
Conveniently packaged as a 5lb bulk product, R1 protein is a cost-effective way to supercharge your daily protein intake.


  • High-quality whey protein isolate compound
  • Ultra-rapid, easily digestible formula
  • 25g protein per serve
  • Promotes muscle fibre growth and training recovery
  • Low in lactose and digestive irritants

Our Thoughts

Whey Protein Isolate is the king of protein supplements because it is clean, fast-acting, and easy to digest. Rule 1’s R1 Protein is no exception - it’s a delicious, ultra-filtered protein choice to fuel huge muscle gains and prevent that stiffness and soreness which so often accompanies a heavy training session. With a massive 25g of high-quality protein per serve, R1 Protein is the natural option for anyone looking to improve strength and speed, build superhuman endurance, and achieve that ideal body composition.

Frequently Asked Questions

What is it?
Rule 1 R1 Protein is a fast-absorbing whey protein isolate.

How do I use it?
This protein is designed for post-training or throughout the day.

Who is this for?
This protein is for anyone looking for an easy digesting, fast-acting protein shake.

Rule 1 R1 Protein is a high-quality whey protein isolate.

This is a super clean, high quality, fast-digesting protein powder designed to increase protein intake and boost recovery.

When it comes to getting bigger, faster, stronger or elevating recovery protein intake is one of the most important determining factors.

If you don't have sufficient protein intake in your diet you'll find it takes significantly longer to recover and DOMS last much longer as well.

These are the same people behind Optimum Nutrition so you know the quality and flavours are going to be amazing.

What Are The Key Ingredients In Rule 1 R1 Protein
R1 Protein uses just two main ingredients for this product.

The first of these is a whey protein isolate. This is considered the king of all protein powders and for good reason. Whey protein isolate (WPI) is naturally very high in protein and very low in carbohydrates and fat. This high protein nature also means it is naturally rich in branched-chain amino acids. These are the building blocks of muscle tissue and trigger the body to start building muscle again instead of breaking it down.

R1 Protein also uses whey protein hydrolysate in this protein powder blend. This is even faster digesting than regular WPI. This has ultra-small particles and gets into your system rapidly to start the repair and recovery process.

Being so low in carbohydrates this is also very low in lactose and light on the stomach.

This makes this the ideal at times throughout the day when our bodies need a fast-digesting protein source such as post-workout.

Why Take R1 Protein?
This product is perfectly suited for anyone looking to increase their daily protein intake. As it is ultra-filtered, it also makes a great choice for anyone who often experiences digestive upset from protein supplements.

When Do I Take Rule 1 R1 Protein?
For best results mix 1-2 scoops of Rule 1 R1 Protein in 400ml cold water first thing in the morning and again post-workout. This can also be taken before bed if you need to increase your daily protein intake.

Who Can Take R1 Protein?
This product is perfectly suited for anyone looking to increase their recovery or protein intake.

Should I Stack Anything With It For Best Results?
This is arguably the most important supplement you can take for muscle growth recovery to maximise strength gains you may want to supplement with a creatine also.

Customer Reviews

Based on 22 reviews
Kaydan Leak

R1 Protein WPI 5lbs by Rule 1

ben murphy

Daddy like

Patrick Dickson
Super clean WPI

Have had this a number of times now in various flavours and never disappoint! Great range of flavours and the team always gets orders processed fast so I can my order in a day or two

Thanks Pat! So happy to hear you're enjoying the Rule 1 R1 WPI it's such a good product and we're happy to hear you're loving it too

Thank you for the feedback :)

Danielle fields
Super fast

Fast delivery, communicative and the product is great!!

James Darke
R1 protein purchase

Tasty protein, quick delivery. No qualms here

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