Pharmaceutical Presenting at the National Lipid Association's (NLA) Scientific Sessions in Scottsdale, Arizona, USA, Kowa Pharmaceuticals America, a subsidiary of privately owned Japanese firm Kowa, and US drug major Eli Lilly (NYSE: LLY) announced positive results of the PREVAIL US study (Pitavastatin compaREd with praVAstatin In Lowering LDL-C in the USA) which evaluated the efficacy of Livalo (pitavastatin) 4mg compared with pravastatin 40mg in reducing low-density lipoprotein cholesterol (LDL-C), the primary endpoint, as well as effects on other lipid parameters and lipoprotein particles in adult patients with primary hyperlipidemia or mixed dyslipidemia. 1 June 2012