The information provided is for educational purposes only and is not intended to replace discussions with a healthcare provider. Sildenafil for pulmonary hypertension can also be known by the brand names Revatio and Grandipam. However the dose is usually not more than 40 mg 3 times a day. You should only be treated with one of these products at a time. Sildenafil at steady state, at a dose not approved for the treatment of erectile dysfunction 80 mg t. If you prefer, you may contact the U. Check with your doctor right away if you have a sudden decrease in hearing or loss of hearing, which may be accompanied by dizziness and ringing in the ears. · Viagra; Descriptions. Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. Push the plunger of the syringe, then insert the tip into the bottle while holding the bottle upright on a flat surface. Slowly pull back. Still, if your doctor says it’s okay for you to use and you end up paying out-of-pocket, you can still get the generic for a lot less than Viagra. According to price-comparison site test1.ru Examples of Viagra’s more commonly reported side effects include: headache. flushing (temporary warmth, redness, or deepening of skin color) stuffy nose. indigestion (upset stomach) mild vision.