NEW YORK, Feb. 5, 2008 (PRIME NEWSWIRE) -- Manhattan Pharmaceuticals, Inc. (AMEX:MHA) today announced that it has entered into a joint venture agreement with Nordic Biotech Advisors ApS (Nordic) to develop and commercialize Hedrin(tm), the company’s novel, non-insecticide treatment for head lice. Manhattan Pharmaceuticals, Inc. currently owns North American rights to Hedrin and is pursuing development as a medical device in the U.S.