Nightmares
"Been taking 1mg of prazosin for the last 2 months for PTSD nightmares that were causing sleep problems. Nightmares stopped the first day I took it but, I experienced severe headaches, dizziness, drowsiness, nausea and a lack of energy. As I got used to it, the symptoms gradually improved but did not go away completely. If I&#039;ve been drinking, the symptoms will worsen but it is bearable. Overall, my nightmares have become rare and I can sleep through the night; the side effects are worth it."