NAC (N-acetyl cysteine) has quietly become a respiratory health essential—for good reason. From thinning mucus to boosting glutathione (your lungs’ key antioxidant), NAC offers dual-action support for breathing better naturally. 

Whether you quit smoking last week or years ago, your lungs are working hard to heal—and this guide shows how to help them. With research-backed timelines, practical tips, and doctor-formulated support, you'll learn what happens inside your body after quitting, how to spot signs of healing, and which natural remedies (like mullein, NAC, and hydration) actually make a difference.