Coughing up yellow phlegm but not sick

Coughing up yellow mucus can be alarming, but it’s generally your body’s way of fighting back against an infection. Mucus, which is constantly made by the cells lining your respiratory tract, plays an essential role in keeping your lungs and airways healthy by trapping dust, allergens, and pathogens.

However, when mucus changes color—particularly to yellow—it can signal an underlying issue, generally an infection.

While coughing up yellow mucus may signal a simple infection that can benefit from at-home care, knowing the signs of a more critical condition can help you make informed decisions about your health.

Coughing up yellow mucus in the morning

Persistent or worsening symptoms should always be evaluated by a doctor.

This guide will help you understand what yellow mucus means, its causes, associated symptoms, available treatments, and when it’s time to call your doctor.

While this guide provides general information, always consult a healthcare provider for personalized medical advice.

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Understanding Phlegm, or Mucus

Mucus is normally made by different parts of the body, including the respiratory sys

yellow gunk in my throat

yellow pus in my throat