Quote Originally Posted by evolutionkennels View Post
After would be my suggestion, as all medicines have side effects that may or may not interfere with your dogs performance.
I was thinking the same, i tried it twice and it had no side effects but had friends who tried and it gave some dogs bad diarrhea. though using it before which can be done 10 days in advance can prevent your dog from even contracting babesia, instead of treating it afterwards.