Porn Dependancy: Causes, Signs, And Treatment Sildenafil is used to treat erectile dysfunction (ED) and to reduce blood stress in pulmonary arterial hypertension (PAH). A headache, abdomen upsets, and flushing are the principle unwanted facet effects, and it should not be taken inside 24 hours of a nitrate. Different medication may work together with sildenafil, together with prescription and...