Quantum BioPharma Ltd. is a biopharmaceutical company operating through two segments: Biopharmaceutical Innovation and Strategic Investments. It develops drug candidates for neurodegenerative, inflammatory, metabolic, and alcohol misuse disorders. Its lead compound, Lucid-MS, is a patented new chemical entity in Phase 2 clinical trials for preventing and reversing myelin degradation, the underlying mechanism of multiple sclerosis, in preclinical models. The company also develops FSD-PEA for inflammatory diseases such as mast cell activation syndrome, Lucid-PSYCH for major depressive disorder, and unbuzzd, a dietary supplement for alcohol misuse. It maintains a portfolio of strategic investments consisting of loans secured by residential property. Formerly known as FSD Pharma Inc., it changed its name to Quantum BioPharma Ltd. in August 2024. Founded in 1998, the company is based in Toronto, Canada.