MORRISTOWN, N.J, April 23, 2018 (GLOBE NEWSWIRE) — Pernix Therapeutics Holdings, Inc. (NASDAQ:PTX), a specialty pharmaceutical company, today announced that it has agreed to participate in an investor group (collectively with Pernix, the “Investors”) that has entered into a “stalking horse” asset purchase agreement to acquire certain assets of Orexigen Therapeutics, Inc. (“Orexigen”), including worldwide rights to Contrave® (naltrexone HCl / bupropion HCl), a prescription-only weight loss medication, for $75 million in cash.