Absolutely yes, meds can impact dreaming and the nature of dreams. I don’t know what meds you are on, but prazosin is a blood pressure drug that is given of label to help people with PTSD. It increases REM sleep, which is when your mind works through issues you’re dealing with, and prazosin basically helps people work through their trauma. In my experience, my REM sleep approximately doubled, and my dreams took on a much more positive spin. Instead of being powerless in my dreams, I became much more of an active participant, “hitting back” when appropriate. It’s a great drug!