It estimates Viagra, made by Pfizer , has around a percent share of the ED drug market in tier one, two and three cities and it expects the generic version could take more than half of the market. Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. You can see an in-person provider or speak with a doctor virtually. Most online providers require a picture of a valid ID, a selfie showing your face, and a recent blood pressure reading taken with a home blood pressure monitor or by a medical provider. You’ll also need to fill out a medical questionnaire with answers about your medical history, current medications, and lifestyle habits. When taken at the correct time and paired with sexual stimulation, the erection lasts long enough for successful intercourse.Viagra’s patent in China has expired and some analysts expect cheaper prices will bring a surge of demand for the storied erectile dysfunction (ED) drug. ″China ED drugs market . Published July 28, Want Viagra? You’d be wise to talk to your doctor and ignore the hundreds of sites that purport to sell the blockbuster drug at a low cost — sometimes . A 50 milligram pill of Jin’ge, equal in dose to Viagra, costs 48 yuan, 60 percent lower than its overseas counterparts. Jin’ge comes in packs of one, two, three, four and 10 tablets. A .