"i take 50mg 3 x day. total 150mg. i&#039;m bipolar and take other medicines that causes drowsiness but realized within a couple weeks that this subsides with time. it is nothing like xanax that knocks you out and atarax takes a while to start working if you&#039;re in the start of an attack. i didn&#039;t experience any of the antihistamine effect the pill is supposed to provide. i will ask for a different medication to manage my anxiety."