Before taking sildenafil, tell your doctor and pharmacist if you are allergic to sildenafil, any other medications, or any of the ingredients in sildenafil tablet or suspension. For example, the British Heart Foundation is part-funding research alongside the University of Manchester which has found that amlodipine, a drug used to treat high blood pressure, could help treat vascular dementia or stop it in the early stages. National Library of Medicine. Some people may also have ringing in their ears tinnitus or dizziness. There are many other treatments for erectile dysfunction.23 hours ago · When you look at the data, you can see the outcomes – while taking a certain drug, the death rates from a totally different illness will go down, for example. Viagra started life as a drug. Sildenafil citrate is a white to off-white crystalline powder with a solubility of mg/mL in water and a molecular weight of VIAGRA is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg and mg of sildenafil for oral administration. Print. In Colombia, the government has refused to recognize Pfizer’s patent onthe impotence drug Viagra (sildenafil), and has approved the sale of a copy version of .