Well we started to go off it then we got our first cold so we started again ( suspension this time - which sucks he was happy to take the tablet dissolved, even opened his mouth for it. HATES the suspension shuts the jaws and we are stuffed ) We are starting to cut the dose back ourself now to see what happens, he has been off his food the last couple of days so we will see. he is 7 mths and now taking 2.5 ml a day.