The Preventive Nutrient Company Inc. (PNC) was founded in 1997 by Dr. Moon K. Song upon retiring from the U.S. Department of Health Medical Center at Los Angeles. He continues to serve as a research scientist at the VA Greater Los Angeles Healthcare System. PNC is a Research and Development Company that has developed innovative dietary supplements and products, including Pro-Z and Cyclo-Z (Glucometa). Several studies suggest these products will be effective in the prevention and treatment of many metabolic diseases without any known side effects.