Jingo is the trade name and the generic name is sildenafil citrate tablets . Sildenafil is an oral drug for the treatment of erectile dysfunction, which causes relaxation of the smooth muscle in the corpus cavernosum, dilation of the cavernous sinus, and inflow of blood to the penis to cause an erection. The drug is contraindicated in patients who are using nitroglycerin or other organic nitrate-containing drugs and those with cardiovascular disease, and in patients suffering from diseases that predispose to erectile dysfunction, such as sickle cell anemia. The drug should be used with caution in patients with severe renal or hepatic impairment, hypotension, and retinal diseases. Possible adverse reactions include present dyspepsia, diarrhea, dry mouth, vomiting, dysphagia, tinnitus, malaise, pain, and chills. The most common after-effects are headache, facial flushing, indigestion and muscle pain. Sildenafil needs to be taken under the guidance of a doctor, do not blindly use the drug on your own.