I have never been on Effexor but have a male friend who takes it. from him I know that going off it sucks big time. Make sure you do not blame yourself, your depression (incl. hypersomnia), your energy levels, or the position of the stars for something that may just be withdrawal. I would make sure to drink lots of tea - I do not know whether Effexor is cleared by the kidneys (in which case the more you drink the better) or the liver (still drinking more fluids won't hurt), but either way.