I’m afraid I don’t know enough about the science of these things and chose to get my creatine from Swolverine because I read good things online and because they are at least 3rd party tested, while being a somewhat more reasonable price than their competitors who are. I would have given 5 stars, but I wish I could buy in bulk instead of having to get a monthly shipment for a range of reasons: I could save some money and have fewer shipments going through our already overcrowded delivery system. The problem is there is no benefit to buying more than one at once, and the volume per package is only a month’s worth of product. I’m stuck subscribing as a result. Anyway, it’s 3rd party tested creatine monohydrate at a decent price, so that’s good.