Jingo is the trade name and generic name for sildenafil citrate tablets, 25 mg is likely to be effective, although the specifics depend largely on factors such as an individual’s sensitivity to the drug. Sildenafil is a clinical treatment for erectile dysfunction of the penis. The recommended dose for most patients is 50 mg, and the dose can be increased to 100 mg or lowered to 25 mg due to the varying effectiveness and tolerability of the drug, so it is possible that half a 25 mg tablet may have some effect. The specific dose is recommended to first see a doctor for examination, combined with the individual’s physical condition to follow the doctor’s instructions to choose, to avoid their own blindly indiscriminate use of drugs. Adverse reactions to the drug are headache, dizziness, angina, tachycardia and so on. Allergic to the drug is prohibited, patients taking nitrate drugs are prohibited from using, patients with heart disease should be careful to use. If you need to use the drug, you should use it under the guidance of a professional doctor to avoid abusing the drug by yourself and causing adverse reactions.