Prazosin
"I've been taking prazosin to help with Post traumatic stress disorder nightmares for over 5 years. When my doctor told me about it I was ready to try anything to get the nightmares to stop as they were the most intrusive continuous PTSD symptom of mine. I started at 1mg, worked my way to 2mg and found that it worked very well. For a couple of years now, I am only taking 0.5mg as a maintenance dose. The only side-effect I ever experienced was some dizziness upon standing after I took it at night but that disappeared quickly."