THE WOODLANDS, Texas--(BUSINESS WIRE)--Pernix Therapeutics Holdings, Inc. (NYSE Amex: PTX), a specialty pharmaceutical company, today announced that Cooper Collins, President and Chief Executive Officer, will present at the 24th Annual ROTH Conference on Tuesday, March 13, 2012 at 10:30 a.m. PST. The conference will be held at The Ritz Carlton in Dana Point, CA.
