Welcome to 4 Supplement Reviews!
4 Supplement Reviews is the most comprehensive reviews site on the web! We have tested and reviewed hundreds of products and we have hundreds of reviews submitted by visitors of this site.
Get started reading reviews by visiting our user reviews section, browse the latest reviews posted below, or select one of our featured reviews or review categories from the menu on the right.


Over the next two months I’m going to be reviewing a whole range of protein bars! We’ve tested 20 different protein bars! This week we’ll be reviewing one of the most popular protein bars on the market, the Promax Protein Bar.
ZMA is a combination of Zinc Monomethionine Aspartate plus Magnesium Aspartate and vitamin B-6 and is used as a natural product to increase testosterone levels. Today we’re road testing Optimum Nutrition’s ZMA.
Today I’m reviewing one of the most popular weight gain supplements on the market, Prolab’s N-Large II. I am not currently using N-Large II, but I have used it in the past with very good results. Let’s take a look at N-Large II in a bit more detail…
This week I’m reviewing CytoSport Muscle Milk after just polishing off my last serving of my 5lb tub. This is the first time I’ve tried Muscle Milk, so I’m going to give you my thoughts on the product and the experiences I had with it.