"i was prescribed atarax for one specific reason. i am having an mri done and am extremely claustrophobic. i was prescribed 50mg pills. i was given 4 pills. i am to take 1 pill first to see how it effects me and then i can decide if i need another one. i took one for the first time last night and i became very sleepy. i am also on tylenol 3 for pain. my eyes could barely stay up. however, once i closed my eyes, i was up every hour on the hour. not sure if that is because of the anticipation of my mri or what. i was very relaxed however, but do not suffer the anxiety attacks as bad as i did years ago and my heart goes out to those who do. i will take the two pills at mri and give my review again then."