Keep in mind also that this article will be 10 years old this spring. As a follow up, my daughter who is almost 12 has only been on antibiotics once in her life after getting sick overseas, and my son who is almost 8 has never taken any. Think about the folks you all may know with kids, who have incessant ear infections, bronchial problems and so forth, and take antibiotics several times per year. We only run a maintenance cycle of Ge132 about once per quarter.
In addition we also use this Intramax product daily which would also be excellent in balancing the nutritional demands of your canine athletes as well.
http://store.druckerlabs.com/intraMAXinfo_s/117.htm
Because my wife is a healthcare practitioner, we buy it at wholesale. If there was enough demand, I would sell it to this board for a small markup, cheaper than it could be had anywhere else online.