The medication Silagra is prescribed to treat erectile dysfunction. For pulmonary arterial hypertension, it is also recommended. This drug aids in the onset and maintenance of an erection by relaxing the penile muscles and increasing blood flow in them. Sexually transmitted infections are not prevented with silagra. As determined by your physician, this medication may also be used to treat additional disorders. When a medication is taken with food or another medication, interactions usually happen. Blurred vision, headaches, upset stomachs, stuffy noses, back pain, and flushing in the face, neck, or chest are some of the side effects of Silagra.