Beyond that amount, you will need a prescription from a licensed U. Be aware that the rules the CBP agents follow change often and without notice, so it’s important to contact the CBP for timely information. Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy NAION. In addition, you must state, in writing, that the medication is for your personal use. The primary endpoint was time to limiting angina in the evaluable cohort. The frequency of patients reporting improvement of erections in response to a global question in four of the randomized, double-blind, parallel, placebo-controlled fixed dose studies patients of 12 to 24 weeks duration is shown in Figure 7.How to use. Please read the enclosed leaflet carefully before use. • take 1 tablet approximately one hour before sexual activity. • swallow tablet whole with water. • do not take more than 1 tablet a day. Viagra Connect starts to work within minutes. You may take it up to 4 hours before sexual activity. Oral use. Brand names for sildenafil include Viagra, Revatio, and Liqrev. The cost for sildenafil oral tablet mg is around $10 for a supply of 2 tablets, depending on the pharmacy you . 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. Close.