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					Originally Posted by chloesMama  Do you mean don't change/rotate brands or don't change/rotate flavors within the same brand? | 
 
  I see no harm in rotating flavors, if the ingredients are essentially the same; it just that very little is known about the effects of the rotation diets some manufactures are suggesting.  I think when your dog is vomiting and experiencing diarrhea it's always difficult for him, and not a good thing.  This is a big stressor and can lower his resistance to other things.  I guess it depends on how your dog responds.