LONGEVITY Reishi supports and promotes long term health, enhances immune response, supports healthy cardiovascular function and may help bring about a calm, restful state in dogs and cats of all ages. It is a powerful antioxidant; protecting cells from harmful free-radicals. Like most other medicinal mushrooms, Reishi contains impressive amounts of active Beta-(1-3) (1-6) glucans, which are water soluble and are extractable into water. However, unlike most other mushrooms, Reishi also contains other beneficial compounds that are not water soluble, the most notable being triterpinoids, which require alcohol as part of the extraction process. The alcohol is later removed, when the extract is dried into powder form.