Uses of Visagra 50: - Erectile dysfunction Erectile dysfunction, Pulmonary arterial hypertension Hypersensitivity. Patients concurrently or intermittently using organic nitrates in any form.

How to use Sildenafil: Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Sildenafil may be taken with or without food, but it is better to take it at a fixed time. Administration: May be taken with or without food. Adult Dose: Oral Erectile dysfunction Adult: 50 mg about 1 hr before sexual intercourse. May adjust dose depending on penile response. Max: 100 mg/dose and not to be taken > once in 24 hr. Elderly: >65 yr: Lower initial dose at 25 mg. Hepatic impairment: Initially, 25 mg. Pulmonary Arterial Hypertension 20 mg 3 times daily, administered 4-6 hours apart Renal Dose: Renal impairment: CrCl (ml/min) Dosage Recommendation <30 Initially, 25 mg.

Inhibitors of CYP3A4 such as cimetidine and erythromycin are likely to reduce sildenafil clearance. CYP3A4 inducers such as rifampicin may decrease the plasma concentrations of sildenafil. Symptomatic hypotension when used with beta-blockers. Plasma concentrations are increased by ritonavir. Potentially Fatal: May potentiate hypotensive effects of of organic nitrates and nicorandil.

Hypersensitivity. Patients concurrently or intermittently using organic nitrates in any form.

Common - Flushing (sense of warmth in the face, ears, neck and trunk) - Headache - Blurred vision - Muscle pain - Upset stomach - Altered vision - Rash >10% Headache (7-16%) 1-10% Flushing (4-10%),Epistaxis (8%),Dyspepsia (4-8%),Insomnia (6%),Erythema (5%),Diarrhea (4%),Dizziness (2%),Skin rash (2%)

Precaution: Caution when used in patients with anatomical deformation of penis or conditions that may predispose them to priapism (e.g. sickle cell anaemia, myeloma, or leukaemia). Mild, transient, dose-related impairment of colour discrimination (blue/green) may occur. Hepatic or severe renal impairment, bleeding disorders, active peptic ulceration, hypotension, recent history of stroke, MI, arrhythmias, unstable angina, heart failure or retinal disorders. May cause sudden loss or decrease in hearing.

Sildenafil inhibits phosphodiesterase type-5 (PDE5) which is responsible for cGMP degradation in the corpus cavernosum. Inhibition of PDE5 increases cGMP levels in the corpus cavernosum which results in smooth muscle relaxation and inflow of blood to the corpus cavernosum.