"my psychiatrist put me on this over seroquel which had been causing my white blood cell count to drop. i had been on seroquel for years, and was able to function on it. not so with trazodone. the 50 mg i started on put me to sleep, but i felt really groggy the next day. i&#039;ve tried lowering the dose to 25 mg and i still feel absolutely tired. some of the side effects i&#039;ve had: bad cough, runny nose (at times), feeling like i have a constant mild headache, feeling disconnected sexually, sweatiness, and the last one is the most bothersome--erectile dysfunction. sometimes, i can get a full erection, and sometimes i can only get about 3/4 of the way there. i&#039;m going to fight to get back on the seroquel which i still have and never caused any erectile dysfunction."