Blood pressure medication & sex life

Hey everyone. I just wanted to know if anyone else is having this issue. My husband is taking blood pressure medications and it is effecting his erections. He can't get hard and he can't hold an erection when he happens to get hard at all. It is heartbreaking because we had a very active sex life before this and now he can only perform by taking Viagra. 
Is anyone else in this situation? Do you know of any medications for blood pressure that have fewer side effects relating to this issue? I just don't know what to do....it's either choosing between his life or sex and how could I possibly make him choose.....I'm torn....