S-Allylmercaptocysteine HCl is an organosulfur compound isolated from aged garlic with anti-inflammatory, antioxidant, anticancer, and antitumor activities.S-Allylmercaptocysteine HCl inhibits inflammation in COPD and targets Nrf2 in osteoarthritis therapy through the NOX4 NF-kappaB pathway. Targeting Nrf2.