Baiyunshan Jingo tablets, also known as sildenafil citrate tablets, and avanafil have basically the same mechanism of action, and there is no which one is better. 1. Avanafil: is used to treat male erectile dysfunction. It is mainly mediated by nitric oxide released from nerve endings and endothelial cells, and stimulates smooth muscle cells to synthesize cyclophosphoguanosine, leading to relaxation of penile smooth muscle and increasing penile cavernous blood flow, thus enhancing erectile function. 2. Sildenafil Citrate Tablets: used in the treatment of erectile dysfunction. Its mechanism of action is that during sexual stimulation, the cavernous body of the penis releases nitric oxide and activates the enzyme guanylate cyclase, which in turn causes the small arteries of the cavernous body of the penis to relax, and blood flow is injected into the cavernous sinus of the penis, so as to make and maintain the penile erection. The mechanism of action of the two drugs is basically the same, so there is no which drug works better. According to the patient’s sensitivity to the drug, the degree of adaptation and the presence or absence of side effects and other factors for comprehensive consideration, choose the drug suitable for the patient to use. Adverse effects of the two drugs include headache, nasopharyngitis, flushing, nasal congestion, upper respiratory tract infection, palpitations, hypotension, dyspnea, nausea, constipation and so on. It is prohibited for those who are allergic to any of the ingredients of the above two drugs, those who are taking nitrates, women and patients under the age of 18. Usually, patients should pay attention to rest, do not stay up late, avoid excessive masturbation and frequent sex, quit smoking and drinking, and appropriate physical exercise. If you need to use the medicine, please consult a professional doctor.