The generic name of Viagra is sildenafil citrate tablets, which is not effective for erectile dysfunction caused by root cavernous body, and conservative or surgical treatment should be chosen. Sildenafil citrate promotes smooth muscle relaxation of the corpus cavernosum, increases blood inflow, and improves erectile function in men, while it is not effective for erectile dysfunction caused by damage to the root corpus cavernosum. Adverse effects of this drug include indigestion, nasal congestion, flushing, dizziness, visual abnormalities, etc. It is contraindicated for those who are allergic to this drug and those who take nitrate drugs. Patients with damaged sponges should choose the appropriate treatment program according to the situation. If the damage is mild, the penis can be pressurized bandage, and wait for the spongy body to recover by itself. For those with severe damage, surgical repair is required. Please choose the appropriate treatment according to the condition under the guidance of the physician, do not blindly take medication, so as not to delay the condition.