I have been into bodybuilding for almost have a decade now and what I am about to venture is an unbiased opinion. Optimum Nutrition is indeed one of the best if not the best whey protein product available in the market. However it is to be borne in mind that there is no supplement available for bad diet. Diet is of prime importance and supplements are just to aid you to go to the next level.
I have increased substantial muscle strength over a short span of time and much can be owed to this wonderful product. The key aspect of the product stems from the fact that it is very easy to mix and does not causes any lumps as such. Furthermore the best flavor is the double chocolate which tastes perfect with milk.
The only advice why you don’t want to use it is solely if you are allergic to lactose or have experienced any symptoms of lactose intolerance.