We are so sorry to hear that your pups are not feeling well after eating Greenies! We understand that every dog is different and the health and safety of the pets we feed is our first priority. We are proud to offer a 100% satisfaction guarantee and would love the opportunity to speak with you! Please contact our consumer care team on our website at https://www.greenies.com/contact-us or call us at 1-866-473-3643 so we can learn more. Thank you!