"i have moderate to severe anxiety associated with a very unhealthy self-esteem. it is a terrible thing because i am generally a very rational person. as a result, i have extreme difficulty telling someone how i feel and of hurting another person&#039;s feelings. (i would never want another person to suffer the way i do). my symptoms usually begin with increased heart rate, difficulty breathing, nausea and pain in the chest/throat area, hyperventilation which will sometimes throw me into panic mode and extreme negative thinking that i am unable to deviate from. i was prescribed vistaril 25mg up to 4 times daily as needed. i how found it very effective so far for immediate relief but it does cause drowsiness."