Written by Wilki - Top 50 reviewer - View all my reviews For the price Prima Force ZMA is one of the cheapest I have seen. This particular product is great, since most people are deficient in zinc. One thing in particular that I found extremely helpful is that it helped with sleep. I was able to sleep deeper, and longer, as well as having more vivid dreams. I tend to feel more rested after taking ZMA which is a bonus no matter what your goals are. It doesn't really boost testosterone too much like it claims, but it doesn't hurt, especially if you are deficient in zinc, which most are. For the price you can beat it, and you wont regret buying this product.