There are a lot of worst for me.

Anafranil which is an old med with a lot of sides, got a lot of those. Couldn't pee on it which could get scary at times, took me about 10 minutes to start peeing. Also no saliva at all on it. Try to chew anything....

Celexa made me manic and I'm not even bipolar. Bad luck there. On it I thought nothing could harm me and it almost got me killed.

Prozac, cluster headaches. They hurt. A lot.

Effexor, bad bad bad withdrawals, my pharmacy screwed up and I had no meds for 4 days, I felt like the world was coming to an end. Incredible feeling of doom. I still don't understand how I managed to go to the pharmacy on day five.

Risperdal, weight gain and water retention. I drank but I almost made no urine. Also I gained non-water weight, about 2 pounds a day!

Lamictal, got SJS with an extremely high temp and at the hosp they couldn't even measure my blood pressure with what they had. I was very lucky not to have died.

Remeron, took one pill and was like a darted animal, couldn't get out of bed for 12 hours and was drugged up like heck for another 12, glad I didn't fall and hit my head when I had to get up and pee.

Geodon, the worst med for me. At first it made me so tired I wanted to lie down anywhere, not a nice tired. More like I'm going to die. After a while I started getting basically non stop incredible panic attacks from it. I couldn't eat or drink from the anxiety. They say you die if you don't drink for 3 days, I can assure you I didn't. I forced myself to drink something after 5 days of no food no fluids whatsoever. This is a nightmare I want to forget, but it is hard...

Then I had more minor stuff with other meds, like temporary diabetes insipidus on one (Neurontin), increased anxety symptoms (Paxil, Wellbutrin), and vomiting (Zopiclone).