Overview. Entrepreneurial Spirit, Rooted in Tradition. Mitsubishi Tanabe Pharma America, Inc. (MTPA) is a U.S. subsidiary of Mitsubishi Tanabe Pharma Corporation (MTPC) in Japan, which touts a storied reputation more than 300 years in the making. Our parent company - one of Japan’s most respected - is a research-driven pharmaceutical company that has tirelessly pursued medical breakthroughs with global reach. MTPC has discovered and produced seve...