This is especially true with drugs that are available only by prescription in the United States but sold over the counter in Mexico. After the process went on for weeks, Salcido decided to take her daughter to see a doctor in Tijuana. All medications must be declared upon arrival at the border. The FDA prohibits the importation of “unapproved new drugs” for the purpose of distribution and sale. The medication should be in its original container with a doctor’s instructions printed on the bottle, in English, and generally containing no more than a three month supply.In Tijuana, you will find many pharmacies selling medications. At these pharmacies, you will be able to find muscle relaxants, Viagra, and even pain medications. If you want to buy . Re: Bringing prescriptions back to US. 15 years ago. Save. Hi; The only prescriptions allowed to bring back to US are the blue pills Viagra. Usually, the custom officers shall . Top 10 Best Pharmacy Near Tijuana, Baja California Sort:Recommended Price 1. Farmacia La Más Barata (38 reviews) Pharmacy La Chapu (Chapultepec) “This pharmacy also .