I took Prozac 20mg for 12 years, started out OK, it gave me lots of energy, I couldn't stop talking and I am a quiet person. Reasons for taking it soon resolved themselves, but I kept taking the meds, big mistake!! I noticed I was always hot when others were not, I would sweat even with moderate activity, never wore a jacket no matter how cold. My vision began to get worse, had to have glasses for reading and driving, I began to have hearing problems, turn the TV up more and more.