QUEST® Gel (moxidectin) and QUEST® PLUS Gel (moxidectin/praziquantel) are leading equine dewormers recommended for early and late grazing season, respectively. Both contain moxidectin, making them the only horse dewormers to treat encysted small strongyles and bots in a single dose, plus broad spectrum support against numerous other parasites. QUEST PLUS Gel contains a second active ingredient to treat tapeworms. The easy-to-administer gel formula of both products dissolves on the horse's tongue.