Smoker lungs aren't a lost cause. NAC and mullein leaf is the stack nobody talks about. NAC thins mucus and bumps glutathione back up. Mullein calms inflamed airways so the morning cough Glutathione and Vitamin C Supplement Face D Smoking and liver diseases: an updated review of pathogenesis, progression, and therapeutic implications Clinical and Experimental Medicine Springer Nature Link Unpacking the Hype Around Glutathione