There remain fewer options for eating out whilst avoiding multiple allergens either as an individual or within a group. (foreverfreefrom.com)
Unfortunately, many commercial dog foods contain multiple allergens so it can be difficult to pinpoint the particular ingredient that is causing your dog's allergy. (dogfoodinsider.com)
More often than not, the allergen is either ubiquitous or the patient is sensitive to multiple allergens making it impossible to completely remove all allergens. (pettao.com)