NorBright is a herbal therapy containing Gingko (from the plant Gingko biloba) which keeps your cat or dog bright and alert. Gingko is a well established herbal active containing a powerful anti-oxidant which protects cells from damage by oxygen free-radicals. NorBright is available in three sachet sizes: 1 gram for Cats, 2.5 grams for Small and Medium Dogs and 5 grams for Large Dogs. The content of one sachet of NorBright can be easily mixed with your animal's food daily to provide a highly palatable source of Gingko Biloba.