Okay I've been on effexor for a year and 3 months, I'm at 300mg right now and it was fine for a while but lately I've been getting "brain zaps". I haven't missed any doses and I'm taking them regularly but it's happening alot. I feel kind of dizzy and out of it. I want to go see my doctor but I won't get in until July at the earliest.. I don't know what to do.