Another question.

I have given my Cushings horse Platinum Performance as a daily
additive to his small amount of Senior (vet suggestion). He has done
well on this for the past 3 years. However, recently a product called
4life Transfer Factor has been suggested as a better alternative to
continue to boost his immune system. It does have extracts from cow
colostrum and chicken eggs. While I do like the ingredients of this
product, (vitamins, minerals, probiotics, amino acids and essential
fatty acids) I do not know if the cow colostrum and/or chicken eggs
extracts could have any negative affects?

Does anyone have any thoughts or history with the above? Thank you, Judi