My boyfriend has a hard time obtaining or maintaining an erection. He also has high blood pressure and since he takes high blood pressure meds, they could interfere with his sexual performance too. I have done some research on Viagra, Levitro and Cialis and the side effects from them make me somewhat nervous. I thought about maybe suggesting dietary supplements to him, but I need to know which ones are FDA approved. I love my boyfriend very much and I want help and support him. That's why I am asking this very personal question online for tips on this issue.