i used to take effexor, which didn't quite work for me. one time, i forgot to take my effexor and had a huge anxiety like crazy. i felt like i had overdosed and thought maybe the dosage was too much for me. the next day, i realized that i had forgotten to take it, since i have a medication organizer. when it quit working for me, i was weaned off of it and had no problems going off of it because i was going on another medication at the same time to replace the effexor. with any medication, particularly, antidepressants and anti-anxiety, don't ever stop suddenly.