Continue to take sildenafil even if you feel well. If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when you get sexually excited. For treatment of pulmonary arterial hypertension: For oral dosage forms suspension or tablets : Adults—20 milligrams mg 3 times a day. Stop taking VIAGRA and call your healthcare provider right away if you have any sudden vision loss sudden hearing decrease or hearing loss. Sildenafil plays a secondary role as an alternative for patients who demonstrate acute vasoreactivity in WHO functional class II to improve their 6-minute walking distance 6MWD and those in functional class III to improve 6MWD and improve the functional class. Epistaxis was reported higher in sildenafil-treated patients with a concomitant oral vitamin K antagonist. There are no antidotes available for sildenafil.Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in men. It is also used to treat pulmonary arterial hypertension, a serious heart and lung test1.ru drug is more popular than comparable drugs. It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but . Our online pharmacy and healthcare section includes an extensive range of products for treating almost any condition which doesn’t require prescription medication. The Food and Drug Administration (FDA) has approved it to treat erectile dysfunction (ED) in adults. Join our Member’s Club for 15% off your next order. Subscribe. Sildenafil is a medication used in the management and treatment of erectile dysfunction and pulmonary arterial hypertension. It is in the phosphodiesterase-5 inhibitor (PDE5-I) class of medications. This activity describes the indications, actions, adverse effects, and contraindications of sildenafil as an agent in the clinical setting. Knowledge .