Vivus is a small pharmaceutical company headquartered in Campbell, California, working in obesity, sleep, and sexual health. Vivus is developing an erectile dysfunction drug, Avanafil, that has completed Phase 3 clinical trials. The drug has been approved for use by the FDA, and will be sold under the trademark name Stendra. Stendra is the first and only oral ED treatment approved to be taken approximately 15 minutes before sexual activity.