You need a prescription from a doctor to obtain sildenafil. And they must be in their original containers. Ask your pharmacist or doctor for a copy of the manufacturer’s information for the patient. Resources and support See the Healthy Male site for more information about erectile dysfunction and its treatment. However, if you have medications that are considered a controlled substance including some cough medicines, tranquilizers, sleeping pills, antidepressants, or stimulants, you may only bring up to 50 dosage units across the border without a prescription.Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in is also used to treat pulmonary arterial hypertension, a serious heart and lung drug is more popular than comparable drugs. It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but . Two years after Viagra hit the market in Mexico in and Pfizer launched a multi-million dollar advertising campaign, the number of visits to doctor in Mexico where patients . For certain PEHP members who use any of 13 costly prescription medications — including the popular arthritis drug Humira — the insurer will foot the bill to fly the patient and a .