Sentinel is Interceptor for heartworms and intestinal parasites and Program to help control fleas. It makes the fleas unable to reproduce but does not kill them. There are side effects for Interceptor but there are for all heartworm meds. It is very safe for the most part. I haven't heard of any dog reacting to Program except GI upset. It is supposed to work specifically on the flea's system and shouldn't affect the dog. I have not confirmed that this info is true though.
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |