In their office, they Doctor gives you an injection for a temporary erection. You feel that you are convinced and excited and want to buy this over-priced rip-off formula of theirs which can be gotten for a fraction of the price from any urologist...just check on line. Then, try doing it yourself at home. No thanks. This is messy hurtful, and potentially dangerous if you hit the wrong veins on your ***. No for me and probably not for you. There has got to be a pill that works better than this unsafe and expensive procedure. Don't do shots...unless you want to feel like a diabetic.