About AcelRx PharmaceuticalsAcelRx Pharmaceuticals, Inc. is a specialty pharmaceutical company focused on the development and commercialization of innovative therapies for the treatment of acute and breakthrough pain. AcelRx's lead product candidate, the ARX-01 Sufentanil NanoTab PCA System, which is currently in Phase 3 clinical development, is designed to solve the problems associated with post-operative intravenous patient-controlled analgesia which has been shown to cause harm to patients following surgery because of the side effects of morphine, the invasive IV route of delivery and the inherent potential for programming and delivery errors associated with the complexity of infusion pumps. AcelRx has two additional product candidates which have completed Phase 2 clinical development: ARX-02 for the treatment of cancer breakthrough pain, and ARX-03 for mild sedation, anxiety reduction and pain relief for patients undergoing painful procedures in a physician's office. A fourth product candidate, ARX-04, is a sufentanil product for the treatment of moderate-to-severe acute pain, and AcelRx plans to initiate a Phase 2 study funded by a grant from USAMRMC, contingent on approval of the proposed clinical protocol for the study by USAMRMC. For additional information about AcelRx's innovative programs please visit www.acelrx.com. Forward-Looking Statements Any forward-looking statements in this release are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and include all statements relating to the anticipated closing, and proposed use of proceeds, of the private placement, increase in shareholder value, access to investment capital, and the growth of AcelRx's overall business, as well as other statements that can be identified by the use of forward-looking language, such as "believes," "feels," "expects," "may," "will," "should," "seeks," "plans," "anticipates," or "intends" or the negative of those terms, or by discussions of strategy or intentions. Investors are cautioned that all forward-looking statements involve risk and uncertainties, including without limitation: risks related to the satisfaction of the conditions to, and the timing of, the closing of the private placement, AcelRx's need for additional capital in the future; and other risks detailed in AcelRx's filings with the U.S. Securities and Exchange Commission, including without limitation its Annual Report on Form 10-K for the year ended December 31, 2011 and its Quarterly Report on Form 10-Q for the quarter ended March 31, 2012.