Jingo is the trade name and the generic name of the drug is sildenafil citrate, which takes one hour after administration and the presence of sexual stimulation to be effective. Failure to respond to the medication may be due to lack of time or sexual stimulation. Sildenafil citrate is mainly used for the treatment of erectile dysfunction in men. It takes one hour for the drug to be effective and requires sexual stimulation to be effective, which can increase the hardness of the penis during erection. If the medication is not effective, it may be due to short dosage, insufficient dosage or lack of sexual stimulation. Side effects that often occur after the use of this product include flushing, headache, dizziness, visual abnormalities, back pain, myalgia, etc. It is contraindicated in patients who are allergic to this drug and should not be used in combination with nitrate. It is recommended to use the drug according to the condition under the guidance of a physician, and should not be taken blindly.