"We used this stuff on our 18 week old mini Doxie. We had Pickles for a couple of weeks, and he just seemed to be non-stop, loose out of control. He was not our first puppy, so we know about diet changing, stress, etc. After a little research we decided to try this stuff. 2 days into the 3 day run, and there was already some improvement. Weeks later and all is still great!"