[CockalierMom]

Both of those products also have digestive enzymes so they would have made him worse. My allergy girl is like this and I understand what you are going through. She also does not tolerate probiotics that have a prebiotic in them either.

I have been able to use plain Heartguard with only a slight increase in itchiness for a couple of days, and use Advantage topical every other month for fleas.