Purina ONE +Plus Digestive Health Formula Dry Dog Food, 31.1-lb bag; Offer gentle nutrition for sensitive tummies with Purina ONE +Plus Digestive Health Formula Dry Dog Food. Made with added vitamins, minerals and nutrients, every bowlful is loaded with probiotics to support your pal's digestive wellness throughout a lifetime of adventure. Plus, pups love the tasty combo of meaty morsels and crunchy dog food kibble. Best of all, each wholesome ingredient, starting with real chicken, has a purpose in your pooch's nose-to-tail well-being. Your four-legged pal gets omega-6 fatty acids to nourish his skin and soft coat. Calcium supports his strong teeth, and a blend of four antioxidants, including vitamins E and A, plus the minerals zinc and selenium, helps maintain his immune health. Sooth your furry friend's tummy with a digestive care dog food that packs a punch of purposeful nutrition, too.