Bests & Worsts Reviews from Amazon

The main filtration used for this product (and other Isopure lineup) is ion-exchange method. One benefit to this is that it yields very high protein and very little fat/lactose. However, here are the cons: The cost to set up ion exchange chromatography is cheaper compared to micro/ultra/cross-flow filtration that uses gentle ceramic membranes. Ion exchange uses a more harsh method that involves chemicals (hydrochloric acid and sodium hydroxide). These chemicals damage some of the valuable sub-fractions of whey (such as beta-lactoglobulin, alpha-lactalbumin, serum albumin--immune boosting & antioxidant properties). Ion exchange should be the cheapest whey isolates on the market. But due to its ability to yield proteins with very little fat/lactose, Isopure is doping people into paying a premium price. If you're looking for unflavored whey (and don't mind a gram of carb per serving), NOW Foods Whey Protein Isolate (microfiltered) is the better deal. ***[UPDATE] The original review was for the unflavored version, but I guess they collected all the flavors into one review section.*** -As mentioned in the comment section, the flavored version lists taurine as the first ingredient (most abundant) in their amino acid blend. More and more companies are using taurine/glycine and even creatine (which costs less than whey per gram) and counting it towards protein as these amino acid fillers register as nitrogen (method used to measure protein count). This is a labeling loophole (also known as amino spiking). *Class action lawsuit was filed against Nature’s Best for amino spiking in November, 2014. -I am personally not a big fan of protein products with added vitamin/mineral blends. It is just a fancy glitter tactic and typically, they use the cheapest and the worst forms of vitamins. For example, dl-alpha tocopheryl acetate & magnesium oxide--two worthless (low bioavailability) forms of vitamin E and magnesium. -Nature's Best has been recently acquired by Glanbia (who owns Optimum Nutrition among others) so hopefully, things will change for the better...