This does not mean that the FDA will allow individuals to import medications from Mexico at will. In addition, some prescription medications in the U. And here is a key point: A prescription from a Mexican doctor is no longer acceptable. All medications must be declared upon arrival at the border. And remember, many meds will have different names here so you need to make sure you know what you’re getting. 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.The U.S. State Department issued a warning Friday for Americans to “exercise caution” when buying medications from drugstores in Mexico, posting the health alert a week . 1. Re: Buying Viagra Abroad. 10 years ago. Save. Yup, they carry Viagra at just about every corner pharmacia. Some pharmacias even have the “Super Viagra Man” dude posted at their entrance! Big blue guy wearing a Superman cape, LOL. As far as I know, you don’t need a prescription for the majority of the drugs that can be purchased in the local. A prescription from a US (or any country other than Mexico is useless here. You must have one from a Mexican doctor to but drugs that are prescription here. Of course, many .