That's an unusual dose of Effexor. I didn't know one could take 100 mg. I guess you take a 75mg. plus most of a 37.5 mg. dose? At any rate I would go to another psych or your Primary Care Dr. and simply explain your situation. Effexor is a notoriously nasty substance to come off of, though 100 mg. is not very high a dose. Despite it's well known WD's. if not tapered slowly, it's not a schedule substance. Request a 3 month supply so that gives you time to find a psych or G.P. in Mexico. It's not that heavy a request and no decent physician is going to want you to run out of an SSNRI that is apparently working..