Generic name of Viagra is Sildenafil, which is not usually taken after cardiac stenting. When the drug is required due to a medical condition, an interval of six months or more is recommended, and the decision is made after a comprehensive assessment of the condition by a doctor. Sildenafil is a type 5 phosphodiesterase inhibitor, which is mainly used to treat erectile dysfunction and other diseases in men; however, the use of this drug can affect the cardiovascular system, resulting in angina pectoris, tachycardia, accelerated heartbeat, often accompanied by panic attacks, low blood pressure, myocardial ischemia, cardiac arrest, cardiac failure, electrocardiogram abnormalities and other discomforts. Therefore, the drug should not be taken for a short period of time after cardiac stent implantation. If you need to take the drug for treatment due to your condition, it is recommended that you take it at intervals of six months or longer, and you should also take it after your doctor has made a comprehensive assessment of your condition to decide whether you can take the drug, as well as to clarify the dosage and precautions for taking the drug. The drug may cause nausea, vomiting, dyspnea, gout, fatigue and other discomforts; allergic to the components of the drug, myocardial infarction within six months, shock, arrhythmia is prohibited; need to pay attention to the observation of the process of using the drug, if there are uncomfortable symptoms, you should stop the drug immediately to consult a doctor; children, the elderly and other special groups need to be guided by a doctor to use the drug. The above medication should be used under the guidance of a doctor, avoid self-medication, so as not to cause adverse consequences.