Quantum BioPharma Ltd., together with its subsidiaries, operates as a biopharmaceutical company in the United States. It operates through two segments, Biopharmaceutical Innovation and Strategic Investments. The company researches and develops a portfolio of assets and biotech solutions for the treatment of neurodegenerative, inflammatory and metabolic disorders, and alcohol misuse disorders with drug candidates in different stages of development. Its lead compound is Lucid-MS, a patented new chemical entity that is in Phase 2 clinical trial to prevent and reverse myelin degradation, the underlying mechanism of multiple sclerosis, in preclinical models. The company also offers unbuzzd, a dietary supplement for alcohol recovery and clinical-stage healthcare solutions for emergency settings. In addition, it maintains a portfolio of strategic investments comprising loans secured by residential property. The company was formerly known as FSD Pharma Inc. and changed its name to Quantum BioPharma Ltd., in August 2024. Quantum BioPharma Ltd., was founded in 1998 and is headquartered in Toronto, Canada.