Will Falconer, DVM Moderator
Hi Gretchen,
The TF products can definitely impact the allergy state, as that's immune based. Itchy feet are most often an allergy symptom. As to psych reasons for foot chewing, that'd be less likely than simply, "My feet itch!"
And yes, if symptoms recede, especially in several areas, you are on to something. I mainly employ the transfer factor in my practice because they have a long history of research behind them, spanning back to the 50's. And they clearly eclipse immune boosting that any other supplement does in comparison to what they achieve. The Plus line, as in Canine Complete, Feline Complete, etc, have a great compliment of other known immune boosters added, that enhance the TF fractions even more.
I tend to "look the other way" on the synthetic vitamins. While they may not be the best, their presence is secondary to the immune benefits, and I don't see them harming my patients. When I set out to nourish a weak organ or give vitamin and mineral support, I'll use another line that's entirely food based, from Standard Process. And some patients certainly get both types of supplements, especially my cancer guys.