VIAGRA
Sildenafil citrate
Pfizer Limited
It is available as a tablet taken orally and injection to be administered through a vein. To treat pulmonary arterial hypertension it is usually taken three times a day.
Oral: Store at 15-30°C. Store it at room temperature and in an airtight container.
Hypersensitivity.
No Disease Found
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 a-blockers. Plasma concentrations are increased by ritonavir. Potentially Fatal: May potentiate hypotensive effects of of organic nitrates and nicorandil.
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It is any effect of a drug, chemical, or other medicine that is in addition to its intended effect, especially an effect that is harmful or unpleasant.