I dont know if you consider this an MRP but..... Natures best has either a low carb or a no carb protein power. I bought my mom some of that stuff when she worked out and it tastes pretty good. I told her to just take 1 scoop instead of 2. I think 1 scoop is 25 grams of protein. This is some info on it. Hope this helped.
Nature's Best Perfect Isopure, is the first and only product of its kind to contain 50 grams of 100% Pure Ion Exchange Whey Protein Isolate. All impurities have been removed to provide you with a great tasting, lactose free, fat free, glutamine enriched state-of-the-art meal replacement drink mix.
Our protein source is clearly identified as 100% pure ion exchange whey protein isolate. Isopure is rich in branched chain amino acids and glutamine: Each serving provides 2700mg isoleucine, 6750mg leucine, 5450mg lysine, and 4.6g L-glutamine. Furthermore, Isopure contains 0 grams of sugar and is instantized so it can be taken anywhere and mixed with a spoon.