Horse Warehouse Zimecterin Gold DewormerZimecterin Gold (Merial) is the first equine dewormer licensed in the U. S. for the control of equine tapeworms. Also removes Roundworms and Bots. Expiration dated 03, 2022 Zimecterin Gold combines ivermectin (1. 55%) and praziquantel (7. 75%) to provide the broadest spectrum of parasite control available for horses. Praziquantel is proven to have a wide margin of safety and to be highly effective for controlling tapeworms in horses. Zimecterin Gold