i had severe anxiety and was given prozac. it has worked extremely well. i used to get anxiety talking to bank people or catalog clerks on the phone. my heart would start racing and t . i am a b personality but my insides are hysterical. since i also have mild diabetes docs take heart symptoms seriously. i have been taking 20 mg for one month. the first week i was high as a kite. i could only think of what i was looking at. colors were brighter. but i was so drowsy. the second week i had a stomach ache. things have stabilized now.