Like udenafil and avanafil it belongs to a new generation of PDE5 inhibitors.This formulation has higher oral bioavailability than the parent drug.[1] It is manufactured by Cristália Produtos Químicos e Farmacêuticos in Brazil and sold there under the brand-name Helleva.[2] It has undergone Phase III clinical trials,[3][4] but is not yet approved for use in the United States by the U.S. Food and Drug Administration.This drug article relating to the genito-urinary system is a stub.