... taking these meds for Anxiety/PTSD and Panic attacks. I switched from Viibryd to Pristiq. The come down from Viibryd was really scary! I thought I was going crazy. I am still a little scared to take Pristiq because this will be the 5th antidepressant ive tried ( lexapro,paxil,zoloft,Viibryd) all of them were bad and felt like they were worsening my anxiety and making me depressed