yellow vs green mucus infection Archives - The Health Knowledge Base
Illustrated mucus color chart showing phlegm colors from clear to black, with health meanings and when to see a doctor. Includes warning signs for dangerous black/brown mucus.

Mucus Color Chart: What Your Phlegm Says About Your Health

That morning cough or persistent throat clearing produces more than just discomfort—it produces valuable clues about your respiratory health. While most people barely glance at their tissue, the color, consistency, and quantity of your mucus can reveal important information about what’s happening in your respiratory system. This comprehensive guide includes our interactive mucus color chart…

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