Cheapest place I have found FortiFlora is on Chewy.com
Because Purebred cat's and kitten's gene pool is shallow, I strive to ensure their immune systems and intestinal gut health stays strong and healthy. I use NuVet Plus all natural food supplement mixed in their food for added protection against free radicals. Below, I have provided information on this product so that you may decide for yourself if your pet's health deserves the best possible care you can give them. I also use Purina FortiFlora Probiotic for their intestinal gut health. Just like humans , 70% of our pet's immune health lies in their gut. Just sprinkle it on their food, it's that easy. They love the taste and smell!
(Made for Dogs, as Well)