Avanafil is known by the trademark names and Spedra and was developed by Vivus Inc. Avanafil acts by inhibiting a specific phosphodiesterase type 5 enzyme which is found in various body tissues, but primarily in the corpus cavernosum penis, as well as the retina.
Avanafil ເປັນທີ່ຮູ້ຈັກໂດຍຊື່ເຄື່ອງຫມາຍການຄ້າແລະ Spedra ແລະໄດ້ພັດທະນາໂດຍ VIVUS Inc. Avanafil ເຮັດໂດຍ inhibiting ເປັນ phosphodiesterase ສະເພາະປະເພດ 5 ເອນໄຊຊຶ່ງມີຫຼາຍຢູ່ໃນແພຈຸລັງຂອງຮ່າງກາຍຕ່າງໆ, ແຕ່ຕົ້ນຕໍໃນອະໄວຍະວະຮ່າງກາຍ cavernosum, ເຊັ່ນດຽວກັນກັບ retina ໄດ້.