Avana 200 mg is used to treat sexual problems in male(mainly impotence and erectile dysfunction). It increases the flow of blood to the pelvis which helps in erection. The medicine should be taken orally 15 to 30 minutes prior to sexual activity. Initial dose is 100 mg taken with or without food. It is used to buy avana 200 mg online. The common side effects are headache, dizziness,flushing,back pain,stuffy nose,common cold,hearing loss etc.It is a prescription medication so you should consult with a qualified doctor before taking it.Can be used for treating impotence.The medicine is not recommended for women.