MOUNTAIN VIEW, Calif.--(BUSINESS WIRE)--VIVUS, Inc. (NASDAQ: VVUS), a pharmaceutical company dedicated to the development and commercialization of novel therapeutic products, today announced it has initiated a second pivotal Phase 3 study of avanafil, its investigational new drug for the treatment of erectile dysfunction (ED). Avanafil is a next-generation, fast-acting, selective, investigational oral phosphodiesterase type 5 (PDE5) inhibitor.
