This is a cool supplement to keep around the house. I am a large fan of pump supplements. You will not be able to tell that much of a difference with this one unless you have never taken anything like it before. For me, I am pretty much used to taking pre workout and pump supplements, so it is not much of a difference than if I did not take it at all. However, my body feels the effects of it and it will help you with nitric oxide and blood flow. With that being said, it would be worth it to buy.