Jingo is the trade name, generic name sildenafil citrate tablets, because with individual differences and different sensitivity to drugs, there is no uniform effect maintenance time, usually lasts about 4 hours, not more than 6 hours, but there may be exceptions. Sildenafil citrate tablets are excreted as metabolites in the feces and a small portion in the urine after taking them, and generally last for about 4 hours and usually not more than 6 hours after administration, but there may be exceptions, only the chances are small. This medicine is indicated for the treatment of erectile dysfunction, among other things. Adverse reactions such as headache, myalgia and flushing can occur after taking the drug, which can be gradually relieved after stopping the drug. The drug is used with caution in patients with cardiovascular diseases, and this drug should not be combined with nitrates, leucovorin and other drugs. The use of this drug is prohibited for people who are allergic to this drug or the components of the formula, women and children. The specific dosage and usage of the above medicines should follow the doctor’s instructions, and should not be used on their own to avoid adverse reactions.