The main role and efficacy of Avanafil is for the treatment of male erectile dysfunction, which can be applied in conjunction with the condition and under the guidance of a doctor. Avanafil is mainly used for male erectile dysfunction in clinic. The drug selectively inhibits PDE5, enhances the nitric oxide (NO)-cGMP pathway, elevates cGMP levels and leads to relaxation of penile cavernous smooth muscle, so that patients with erectile dysfunction have a natural erectile response to sexual stimulation. Common adverse reactions to this drug are headache, flushing, nasal congestion, nasopharyngitis and other adverse reactions, and in a few patients, dyspnea, constipation, nausea, rash and insomnia. Women are prohibited; people who are allergic to this product are prohibited; people taking nitrate drugs are prohibited; the safety and efficacy of the drug in patients under 18 years of age has not been fully established. Simultaneous application with nitrate drugs is prohibited; use with caution in patients with cardiovascular disease; patients with abnormal penile erection for more than four hours, or with loss of vision and hearing need to seek immediate medical attention. Before applying the drug, it should be examined in time, after clarifying the condition, follow the doctor’s instructions for treatment, and avoid applying it arbitrarily, so as not to affect your health.