A CDSA reveals which bacteria are low. In my case Bifidus is low and I will give "align" a go soon. I did not feel anything on 2-6 billions of Bifidus by Yarrow . Saccharomycess boulardii is helping me with muscle pain - I guess it is working on Candida infection, although it is not by itself enough for treatment and anti fungals must be taken as well. S Boulardii is suggested by Dr.Meirlier and Dr.Klindhardt ,too as far as I know.Food allergy comes from Leaky Gut.So, leaky gut must be addressed along with proper diet.