Venlafaxine
"Effexor has worked at times for me for my panic disorder, but has not gotten rid of my panic attacks. I've been tapering off it for months 150 to 37.5 ... Remember with Effexor almost everyone is going to suffer from discontinuation syndrome... or as many know it the "zaps".  Effexor's lowest dose was 37.5 mg now they make a 25 mg to help. I understand that getting off it is possible, but the reason for the discontinuation syndrome is due to the short half life of the medicine. Prozac at a low dose around 10 mg does help because of its long half life.  "