Avana (Avanafil) pill is a phosphodiesterase five enzyme inhibitor. The characteristic of this enzyme is to degrade cGMP present in Corpus Carvernosum. For the duration of sexual arousal nitric oxide is launched inside the Corpus Carvernosum within the penile region which ends up in extended cGMP. CGMP relaxes clean muscle tissue and increases the blood glide inside the penile place and reasons an erection.