R1 Protein is a whey isolate powder built on isolate and partially hydrolyzed isolate, with no whey concentrate, creamers or amino spiking. It is Informed Choice certified, so each batch is tested for banned substances by the LGC anti-doping lab. That makes it a fit for athletes in tested sport and for anyone who wants a lean, fast-digesting protein without filler. Against rivals, it competes on a short ingredient list and certification rather than on added extras or a wide flavor range.
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Buyers rate it highly, at 4.6 out of 5 from 547 ratings, and most praise the clean label and the fact that it is certified for tested athletes. Complaints center on value and on the thin consistency rather than on the protein itself.
R1 Protein Whey Isolate is a whey protein powder made with whey isolate and fast-acting partially hydrolyzed whey isolate, and virtually nothing else.
The formula leaves out whey protein concentrates, creamers, amino spiking and banned substances.
It is Informed Choice® Certified. It is also regularly tested for banned substances by the sports anti-doping lab LGC.
