How to Get Rid of Phlegm and Mucus in Your Chest and Throat at Home

A cold is annoying enough on its own. What really wears people down is the mucus that hangs around after the sneezing stops, sitting in the throat and chest like it has no plans to leave. It can keep you coughing, make a workout feel harder than it should, and turn an ordinary day into a scratchy, congested one. It usually clears on its own. While you wait, a few simple things at home can thin that phlegm and make it easier to get out.

Mucus is not the enemy. The lining of your nose, throat, and lungs makes it on purpose. It traps dust, germs, and other bits that should not be in your airways, and it keeps those passages from drying out.

Trouble starts when you make too much of it, or when it turns thick and sticks. Colds, allergies, chest infections, smoking, and harsh air are common reasons it builds up. Before you reach for a medicine cabinet full of syrups, these habits are worth trying.

1.  Keep drinking. Water, herbal tea, warm broth, and soup all help thin mucus so a cough can actually move it. Warm drinks tend to feel better than cold ones when your throat is raw.

2.  Gargle with warm salt water a few times a day. Mix about half to three quarters of a teaspoon of salt into a cup of warm water. Filtered or bottled water is kinder if tap water tastes strongly of chlorine. Take a sip, tip your head back a little, and let it sit in your throat without swallowing. Gargle gently for half a minute to a minute, then spit. Repeat as often as it helps. One trial also found that a spray made from fresh echinacea and sage eased sore throat symptoms about as well as a chlorhexidine and lidocaine spray over the first few days.

3.  Breathe in steam. Warm, moist air softens thick mucus so it is easier to cough up. A hot shower with the door closed works. So does leaning over a bowl of hot water with a towel over your head, as long as the water is not so hot that you burn yourself.

4.  Lay a warm, damp towel on your chest or throat. It can take the edge off the tight feeling. Think of it as comfort more than a cure.

5.  Stir honey into warm water or tea. A spoonful coats the throat and, in several studies, calmed coughing about as well as some common over the counter syrups. A squeeze of lemon makes the drink nicer and adds a little vitamin C, but lemon itself has not been shown to dissolve mucus in the airways. Never give honey to a baby under one year old. Ginger, garlic, and a bit of heat from something like cayenne are traditional add ons that some people swear by for getting phlegm moving.

6.  Run a humidifier in the bedroom so the air does not dry your nose and throat overnight. Clean it on the schedule the maker recommends, because a dirty tank can blow mold and bacteria back into the room.

7.  Rinse your nose if a lot of the drip is coming from your sinuses. A saline rinse or neti pot can flush mucus, dust, and allergens out of the nasal passages. Use only sterile, distilled, or previously boiled and cooled water.

8.  Stay away from the things that make your airways angry. Cigarette smoke, including someone else’s, is one of the fastest ways to produce more mucus and damage the lining that is supposed to clear it. Heavy pollution and strong chemical smells do the same.

A few habits are worth skipping while you are congested. Do not cut out milk just because of the old mucus myth. Milk does not make your body produce more phlegm. It can leave a brief coating in the mouth that feels like mucus, which is why the advice stuck. Sugary drinks will not help an irritated throat, but the bigger issue is smoke and dry air, not a glass of milk. Do not use decongestant nasal sprays for days on end without checking with a doctor, because they can bounce back and leave you more blocked than when you started. Do not shut down every cough with a suppressant either. Coughing is how your lungs push phlegm out. If the cough is only wrecking your sleep, that is a different conversation with a clinician.

Lingering phlegm is usually a sign the cold or upper airway infection is still clearing. Some herbs have been studied for that stretch. In one of the larger echinacea trials, 755 healthy adults took either a fresh Echinacea purpurea extract or a placebo for four months in cold season. The echinacea group had fewer cold episodes and fewer days spent sick. A 2017 review of clinical trials also found that andrographis, a bitter herb used in traditional medicine, helped ease cough and sore throat in people with acute respiratory infections. Products that combine these herbs are sold as cold season support, and they are not for pregnancy or breastfeeding. Anyone with an autoimmune condition, diabetes, a bleeding disorder, or who takes blood thinners or immunosuppressants should talk to a clinician first.

If the mucus sticks around, turns thick and greenish yellow, comes with fever, wheezing, chest pain, or shortness of breath, or you are coughing up blood, that is no longer a home remedy problem. Get it checked.