If you’ve ever fought a cold or infection in the past, chances are you’ve had the not-so-pleasant experience of coughing up ...

“Nasal mucus that would necessitate a visit to your doctor may include frequent nosebleeds, nasal congestion that doesn’t go ...

If you’re sick with a cold and constantly coughing up phlegm, an over-the-counter expectorant ... This hue is caused by an enzyme produced by your white blood cells that are fighting off the ...