How can i wean myself off effexor (venlafaxine) 75mg. safely

Yes: One can slowly reduce the amount monthly and then try every other day and then stop.

With medical help: Hopefully the doctor who prescribed it will assist in terminating it. It needs to be either a very slow tapering off or being switched to a different ssri with a longer half-life and have that drug tapered. Those take a shorter time to taper. The "discontinuation" syndrome can be very troubling and serious. You want to avoid it and you can, but not alone. Best wishes for success.

THAT is not a ?: You should be asking here, please call the doc who put you on the Effexor (venlafaxine) or who is taking care of you know and follow that doc's instructions.