When a metallic taste is paired with coughing, you may have an upper respiratory infection like a cold. This can cause your phlegm to contain traces of blood. Repeatedly coughing up phlegm often ...

Early treatment of phlegm and mucus build-up is important, mainly to achieve symptomatic relief and prevent complications, says Dr Chung, as sometimes, thick, hard-to-clear mucus can make it ...

Medically reviewed by Susan Russell, MD You can remove mucus from the lungs using natural remedies, controlled coughing, and ...