Heron Therapeutics, Inc., a specialty pharmaceutical company, develops product candidates using its proprietary Biochronomer polymer-based drug delivery platform. The company's drug delivery platform is designed to improve the therapeutic profile of injectable pharmaceuticals by converting them from products that should be injected once or twice per day to products that need to be injected once every one or two weeks. Its lead product candidate, Sustol, is developed for the prevention of both acute- and delayed-onset chemotherapy-induced nausea and vomiting for patients undergoing emetogenic chemotherapy. The company was formerly known as A.P. Pharma, Inc. and changed its name to Heron Therapeutics, Inc. in January 2014. Heron Therapeutics, Inc. was founded in 1983 and is headquartered in Redwood City, California.