(PRBuzz.com) June 6, 2013 -- AcelRx Pharmaceuticals, Inc. (AcelRx) is a specialty pharmaceutical company. It focuses on the development and marketing of novel therapies for the diagnosis of pain and other related disorders. The company's pipeline product portfolio includes ARX-01, ARX-02, ARX-03, and ARX-04. Its lead product candidate ARX-01 is for addressing IV PCA problems that comes post-sugery such as the invasive IV route of delivery, the side effects of morphine, and the underlying potential for programming and delivery errors related to the complexity of infusion pumps. The other product candidates ARX-02 is for treating cancer breakthrough pain; ARX-03 is to provide anxiety reduction, mild sedation and pain relief for the patients undergoing painful procedures in a doctor's office; and ARX-04 is for the treatment of acute pain. AcelRx is headquartered in Redwood City, California, the US.