Antibiotics only treat bacterial infections, but your mucus color alone cannot tell whether an infection is bacterial or ...

Typically, phlegm is somewhat clear with a cloudy or whitish tint to it. When phlegm has a yellow, green, or red color to it, ...

If your phlegm is yellow/green, you likely have an infection. This hue is caused by an enzyme produced by your white blood cells that are fighting off the infection. Remember that antibiotics don ...

Yellow mucus doesn’t mean that you need antibiotics ... things don’t improve after 10 to 14 days. Your mucus can turn green from the even larger build-up of dead white blood cells.

Producing mucus will help clear your sinuses ... A lot of people think yellow or green snot means you need an antibiotic. That is not true. Laura Martin, MD, MPH If it's a viral infection causing ...

What I usually tell patients to look for in a flare-up is: Is their mucus getting worse? Is there more of it? Is it changing color? Is it going from its usual pale white to a yellow or green sputum?