The Potential Benefits of L-Arginine as a natural substitute for Viagra: Nitric Oxide Production: L-arginine produces nitric oxide, which is crucial in achieving and maintaining erections. Essentially, you are agreeing that you are not going to be selling the drugs or giving them to someone else. Customs and Border Protection CBP will generally prohibit a supply for more than 90 days to come across the border. Generic versions of sildenafil, vardenafil and tadalafil are available. The FDA is only responsible for drugs marketed and sold in the U. The products discussed in this site may have different product labeling in different countries.Generic Viagra (sildenafil) is available as a , , , and milligram (mg) pill and in liquid form. It’s meant to be taken as needed — about an hour before sex — but shouldn’t be. 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.  · VIAGRA is supplied as blue, film-coated, rounded-diamond-shaped tablets containing sildenafil citrate equivalent to 25 mg, 50 mg, or mg of sildenafil. Tablets are debossed with PFIZER on one side and VGR25, VGR50 or VGR on the other to indicate the dosage strengths. 4. Contraindications.