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R1 Protein WPI by Rule 1 Proteins is a premium whey protein isolate and hydrolysate formula designed for those looking for a fast-absorbing, high-quality protein source to support muscle recovery, maintenance and daily protein intake. Delivering 25g of protein per serve with minimal carbohydrates, fats and sugars, R1 Protein WPI provides
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260 ratings
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Easy on the gut, great taste
Very easy to blitz in the blender, takes 15-20 seconds, no residue left behind. The Chocolate fudge is becoming an all-time fav. And my gut seems to tolerate it really well and I have an IBD.
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sim · September 24, 2026
Amazing clean protein
Really loved this protein it mixes very smooth with not a lot of extra foam on top like some proteins. Tastes amazing highly recommended.
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Nick · September 21, 2026
R1 whey protein isolate
Great coffee-chocolate flavour without being too sweet. Mixes smoothly, tastes good with water or milk, and doesn’t have a strong artificial aftertaste.