What Is Mucus? Causes, Diagnosis, Treatment, and Prevention

Excess mucus can be treated with medications or with home remedies.

Medication Options

Decongestants You can use an over-the-counter (OTC) nasal or oral decongestant to reduce the amount of mucus in your lungs or nasal passages. These medications clear up thick mucus, but shouldn’t be overused, since they can lead to side effects or complications.

Decongestants work by narrowing the blood vessels in your nasal passages, restricting blood flow, and reducing the amount of mucus produced. The trouble is, if overused, these drugs can actually dry up your mucous membranes and thicken the mucus they produce, which leads to congestion. Decongestants have also been linked to side effects such as dizziness, nervousness, and high blood pressure.

Antihistamines These medications are designed to block or limit the activity of histamine, a substance your body produces during an allergic reaction. They’re great for treating symptoms such as an itchy or runny nose, but can cause side effects including drowsiness, dizziness, dry mouth, and headache — especially if they’re overused.

Expectorants Cold and flu medications, both OTC and prescription, contain expectorants (for example, guaifenesin), which make mucus thinner and easier for your body to get rid of.

Alternative and Complementary Therapies for Excess Mucus

Nasal irrigation is a natural method for getting rid of excess mucus. It can be performed using a neti pot, a bulb syringe, or a squeeze bottle containing salt water. By pumping salt water into your nostrils, you can help loosen up the mucus in your nasal passages and flush it out.

One important caveat: The U.S. Food and Drug Administration (FDA) says to use only distilled, sterile, or boiled water. Tap water should not be used because it’s not adequately filtered or treated.

 Tap water can contain low levels of microorganisms that, when swallowed, are usually killed by stomach acid. In rare cases, tap water in your nasal passages can be contaminated by dangerous microorganisms that can cause serious, potentially fatal disease.

As with decongestants and antihistamines, overuse of nasal irrigation can lead to complications.

Although the flushing process does help thin out mucus and remove bacteria and allergens, it can also wash away some of the mucous membrane and other protective tissue that keeps you from getting sick.

To reduce mucus and congestion, the Cleveland Clinic recommends doing the following:

  • Drink more water (enough so that your urine is pale) and go easy on beverages loaded with caffeine, which can be dehydrating.
  • Try a humidifier to keep your throat and nasal passages moist (this counteracts excessive mucus and phlegm production).
  • Make sure filters on your heating and cooling system are clean; this can help reduce airborne irritants.
  • Try a saline nasal spray, which helps keep nasal tissues and sinuses moist.

It may also help to give yourself a dose of heat and steam. Try breathing through a warm washcloth, or turning on the shower and inhaling the steam, which can make your mucus thinner and easier to clear.

Prevention of Mucus

You don’t want to prevent mucus from forming in your body. But you can try the strategies and medications suggested above if you want to prevent excess mucus or address thick mucus.