Strategies for Managing the Nitroglycerin Sildenafil Drug Interaction. Date March 11, 2018 Author By Eric Christianson Category Uncategorized. Every now and again, I will run into patients with both angina as well as erectile dysfunction. Sildenafil comes as a tablet and suspension (liquid; Revatio only) to take by mouth. If you are taking sildenafil to treat erectile dysfunction, follow your doctor's directions and the guidelines in this paragraph. Sildenafil is the active ingredient in Viagra and is FDA approved to treat ED. It helps relax blood vessels and improves blood flow to your penis to allow for a harder and longer-lasting erection. Sildenafil 100mg, 20mg, 50mg, 150mg, 200mg Tablets for Men. Sildenafil Citrate is a chemical composition that is discovered to be highly efficacious in countervailing Erectile Dysfunction.Sildenafil Citrate 100mg is a well known composition all over the world. Sildenafil Citrate is one of the most effective drugs prescribed for the treatment of Erectile Dysfunction (ED), aka male impotence. The drug was actually intended for treating the symptoms of pulmonary arterial hypertension; however, during the clinical studies, the drug was found to be extremely effective in treating the symptoms of ED. Sildenafil relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Sildenafil injection is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. Sildenafil is one of the best-known treatments for erectile dysfunction (ED). ED is caused by insufficient blood flow to the penis, resulting in the inability to maintain an erection. Sildenafil can dramatically enhance the quality of an erection by increasing blood flow to the penis. Its effect lasts for 4-6 hours. Sildenafil is widely known. Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in men. It is also used to treat pulmonary arterial hypertension, a serious heart and lung condition. Sildenafil Citrate 20 mg Tablets (Generic Revatio). Product Summary This product requires a valid prescription for shipment, please note that HealthWarehouse.com may not accept prescriptions faxed or emailed by patients. Sildenafil relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men.