Jingo is the trade name, generic name is sildenafil citrate tablets, this drug dosage form more, the general recommended dose of 50mg can be increased to the maximum dose of 100mg. due to the different specifications of the drug, there are 25mg/50mg/100mg, do not know the specifications of a capsule of the drug, it is recommended to comply with the instructions of the doctor to the specific dose. If the dose of the drug taken is the smallest specification, such as 25mg, take a capsule of the reaction is not big can take 2 capsules; but if you take 100mg/capsule, you can not take the 2nd capsule. An increase in the dose of sildenafil citrate tablets will cause an increase in plasma drug concentration, which will enhance the effect, but the consequent incidence of side effects of the drug will be increased, so choose the appropriate dose of the drug according to the doctor’s advice. Adverse reactions such as headache, flushing, dizziness and nasal congestion may occur after the use of the drug, which can usually be gradually relieved after stopping the drug. Sildenafil is prohibited in combination with nitrate drugs, the drug is contraindicated in women, people who are allergic to the product, children, people whose recent cardiovascular state does not allow them to have sex. The specific dosage and usage of the above drugs should follow the doctor’s instructions, and should not be used on their own to avoid adverse reactions.