The Pet Wellbeing Milk Thistle for Dogs – Supports Liver Health, Protects Liver – Glycerin-Based Natural Herbal Supplement is a high-quality, natural supplement that helps support healthy liver function and protect the liver from toxins. This supplement is made with certified organic milk thistle seeds and silymarin flavonoids, which have been shown to help protect the liver from toxins and free radicals. The Pet Wellbeing Milk Thistle for Dogs – Supports Liver Health, Protects Liver – Glycerin-Based Natural Herbal Supplement is perfect for any dog who wants to keep their liver healthy and clean.