This condition may require prompt medical treatment to prevent serious and permanent damage to your penis. If you do not have a plastic syringe or spoon, ask your pharmacist for one. Talk to your doctor if you take too much sildenafil and you’re worried about any of these side effects: headaches. About sildenafil Viagra Sildenafil is a medicine used to treat erection problems erectile dysfunction. Off-labeled Uses Sildenafil is also occasionally used off-label for the treatment of secondary Raynaud phenomenon, female sexual arousal disorder, and as an adjunct in the treatment of altitude-induced hypoxemia. Do not take it more than 3 times a day. Sildenafil for pulmonary hypertension can also be known by the brand names Revatio and Grandipam. · To test for the flu at home, you have to collect your own sample by swabbing your nose. For the test result to be accurate, you need to get a good sample. Your Pixel test kit includes instructions. Here are the main steps: Wash your hands before you touch the swab. Similar to a COVID test, swab each nostril for about 15 seconds. Sildenafil is a medicine used to treat erection problems (erectile dysfunction). Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs). If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when you get sexually excited. sildenafil Used for Erectile Dysfunction Sildenafil (Viagra) is taken by mouth to treat erectile dysfunction (ED). You take it only as needed, typically about an hour before sexual activity (but you can take it anywhere between 30 minutes to .