@casportponyI do have tylan 50 inject. I know 200 would be better but store was out of that dosage. I know he needs 4ml a day and I know that is to much to give at one time for injection. Is 2ml twice a day sufficient or is 2ml still to much to do at one time? I have to get his weight to verify but I would say he has to be at least15-18 lbs. He is not light to pick up that is for sure