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* By Ramesh Govindaraj, Michael R. Reich, and Karin Dumbaugh.

This chapter provides a description of the supply of praziquantel since its introduction in the international market in the late 1970s. It first presents basic data on producers and formulators of praziquantel, including firms that manufacture the drug’s active ingredients and firms that only formulate tablets from purchased raw materials. The chapter next describes the global distribution of praziquantel, with particular attention to the role of bulk suppliers in developing country markets.