I have yet to try this myself, especially after my system disfunctions last year following a severe kidney infection and three rounds of antibiotics. However, I have s Boston Terrier with an incredibly delicate system. I noticed a considerable change in her following the adding it to her food; it cut down her gasiness, quieted her stomach, and created a regularity in her system. I was shocked when the vet staff didn't mind adding it to her food while she was boarding. I think I'm going to look into this for myself though too! The probiotics in pill form help but a little variety would be good too!