Revatio (Sildenafil Citrate) Dosage and Side Effects REVATIO (sildenafil citrate) is used to treat pulmonary arterial hypertension (high blood pressure in the blood vessels between the heart and the lungs) in adults (18 years of age or older). Usual dose:Always take REVATIO exactly as your doctor has instructed you. You should … Continue reading Revatio (Sildenafil)