It reduced inflammation in a transgenic mouse model -- so have a lot of other compounds. Though, as more of a tonic, it's widely used in a variety of disease states, such as depression, we don't have any basis to believe that it will slow progression of a neurological disorder safely at any particular dose. It's a cocktail of many herbs, such as licorice root, that have potent effects on organs like the heart and pancreas, suggesting that it has the capacity to harm more than help in a disease that affects energy and metabolism. If you really want to roll the dice, it's available in the US under its Chinese name.