Be aware of this important heartworm prevention recall by Virbac. If you have this brand of heartworm prevention, contact the manufacturer and send your defective prododuct back to them. http://veterinarynews.dvm360.com/dvm/Veterinary+news/Virbac-recalls-six-lots-Iverhart-Plus-Flavored-Che/ArticleStandard/Article/detail/810721?contextCategoryId=45701