Safety risks of importing medications can include: Contamination or presence of harmful substances Counterfeit versions that do not contain what is claimed Expired medications that are less effective Inconsistent potency Use of ingredients that are untested or banned in the U. Continue to take sildenafil even if you feel well. You will need to do a little vetting. This category includes any drugs failing to meet FDA safety and effectiveness standards. And here is a key point: A prescription from a Mexican doctor is no longer acceptable. And here is a key point: A prescription from a Mexican doctor is no longer acceptable.I am pretty sure that now requires a prescription Mexico is really cracking down on over the counter MED sales. many pharmacies have a DR there or near by who will usually facilitate a prescription for $$ Generic Viagra is dirt cheap in . Before transporting medicines, we advise you to contact your airline. For information about bringing pets into Mexico you may wish to contact the nearest Mexican Consulate in the . Mexican pharmacies offer prescription medications at lower prices than pharmacies in the United States. The price difference is so great that some Americans travel to Mexico to .