The generic name for Viagra is sildenafil, and there is no such thing as which is better, Avanafil or Sildenafil, both drugs work similarly. Both Avanafil and Sildenafil are PED5 inhibitors. Both Avanafil and Sildenafil can improve erectile dysfunction in men, and have a clearer effect on impotence, improving penile hardness and preventing the penis from weakening and preventing normal sexual intercourse during medication. You can choose either of the two medications. The above drugs are contraindicated for people who are allergic to any components of Avanafil or Sildenafil, people with liver or kidney insufficiency, women, children and other people. The above drugs are also contraindicated in people who are taking nitrate drugs. If the drug is used for a long period of time, dizziness, headache, ataxia, mental depression and other symptoms may occur, which can be relieved after stopping the drug. The medication should be administered under the supervision of a doctor, and adverse reactions to the medication should be sought promptly.