In Short - Most Likely. Amanita varieties like Muscaria and Pantherina are legal (either not regulated or not included in the list of prohibited substances) in most countries. Amanita Muscaria is illegal in Australia, Thailand, Israel, Louisiana state (USA), and Great Britain. (view source) The mushroom has also been added to the Natural Health Products Ingredient Database (NHPID) of Canada as a Natural Health Product.