I began taking atypical antipsychotics just over a year ago, and stopped just over a month ago. I have been on Risperdal, Abilify, Seroquel, Zyprexa, and Geodon, in that order. Risperdal caused me to have a grand mal seizure. I was only on it for a month or so, and I was taking a fairly low dose (I don't remember precisely how much). Neither Abilify and Seroquel lasted long because of unpleasant side effects (nausea and twitching/akathesia).