I was put on hydroxezine poamate and had a number of side effects irregular heartbeat, muscular twitching, headache , weird thinking, night terrors, and some others. I told my VA psychiatrist this was happening and I was told not to worry - wait till mid December's appt. and discuss.. I was put on this for anxiety while being taken off of clonazepam while still on fluoxeytine and mood stabilizer lamotrigine(bi polar/panic disorder). I stopped the hydroxyzine -I knew it was not working and causing me severe anxiety and symptoms above. I could barely stand the effects I was having.