Ziverdo Kit is a combination of three drugs: zinc acetate, doxycycline and ivermectin. Zinc acetate is a zinc supplement that provides essential nutrients. Doxycycline is an antibiotic. It stops bacterial growth by preventing the synthesis of essential proteins required by bacteria to perform vital functions. Ivermectin is an antiparasitic drug. It works by attaching to the muscle and nerve cells of the worms, causing them to become paralyzed and die. This treats your infection.