Grey Matters Health Inc. operates as a clinical stage pharmaceutical development company in Canada and Australia. The company focuses on developing the therapeutic drugs in the areas of non-alcoholic steatohepatitis, liver disease, chronic kidney disease, and stroke program. Its pipeline includes repirinast for the treatment of chronic kidney disease; and N,N-Dimethyltryptamine for the treatment of strokes and traumatic brain injuries. The company was formerly known as Algernon Health Inc. and changed its name to Grey Matters Health Inc. in April 2026. Algernon Health Inc. was incorporated in 2015 and is headquartered in Vancouver, Canada.