VetriScience Laboratories - Probiotic Everyday for Dogs, Digestive Support Supplement, 30 Bite-Sized Chews Probiotic Everyday contains probiotics, soluble fibers and prebiotics (Fructoligosaccharides) that support regularity. Probiotics provide the added benefit of promoting immune system function. Probiotic Everyday is safe for daily, long term use. Our Probiotic soft chews are veterinarian formulated and have a delicious duck flavor that dogs love. Veterinarian Formulated. Veterinarian Recommended. VetriScience products are manufactured in the U.S.A. and are backed by a 100% Satisfaction Guarantee.