Jingo is the trade name, generic name is sildenafil citrate tablets, 25mg dosage is recommended to be taken up to once a day, used every other day, 3~4 times a week, there is no significant harm to the body. Sildenafil citrate can diastole the smooth muscle of the cavernous body of the penis and increase its blood flow, and it is mainly used in the treatment of male erectile dysfunction in clinical practice. This product is recommended to be taken before sexual activity, used up to once a day and recommended to be used every other day, and should not be taken continuously. Therefore, it is optimal to take it 3 to 4 times a week, the drug does not accumulate and does not cause any significant harm to the body. Adverse reactions that often occur after the use of this product include headache, flushing, dizziness, back pain, myalgia, dyspepsia, nausea, rash, etc. It is contraindicated for people with known allergies to sildenafil, people taking nitrate medications, and so on. It is recommended to take under the guidance of a physician, and should not be used blindly.