How to Cleanse the Lungs of Mucus With an Expectorant

An expectorant is a type of medication that is used to loosen congestion in your chest and throat to allow you to cough up mucus easier. The most commonly used ingredient is guafenesin. Taking an expectorant as directed can help clean the lungs of mucus.

Young woman drinking water Credit: Huntstock/DisabilityImages/Getty Images

Step 1

Determine how much expectorant you should take to loosen mucus in your chest. According to, children between the ages of 4 and 6 should take 50 to 100 mg every four hours; ages of 6 to 12, 100 to 200 mg every four hours; and 12 years and older, 200 to 400 mg every four hours. Children under 4 years of age should not take guafenesin.

Step 2

Swallow a capsule whole, or open the capsule and sprinkle the contents over food or in water. You may crush or chew a tablet if it is not an extended-release formulation. If you purchase an extended-release formulation, you can cut the tablet along the indented line, if it exists. If there is no indented line, do not crush the extended-release tablet or you may overdose on the guafenesin.

Step 3

Drink a full glass or water or tea after swallowing the expectorant. You must drink eight glasses or more of water or tea per day if you have mucus that you are trying to cleanse from your lungs. Drinking fluids will help thin mucus, which will make it easier to cough up.


See your doctor if your cough has not improved in seven days or you are experiencing a fever, chills, night sweats, headaches or a sore throat.

Load Comments

Copyright © 2019 Leaf Group Ltd. Use of this web site constitutes acceptance of the LIVESTRONG.COM Terms of Use , Privacy Policy and Copyright Policy . The material appearing on LIVESTRONG.COM is for educational use only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. LIVESTRONG is a registered trademark of the LIVESTRONG Foundation. The LIVESTRONG Foundation and LIVESTRONG.COM do not endorse any of the products or services that are advertised on the web site. Moreover, we do not select every advertiser or advertisement that appears on the web site-many of the advertisements are served by third party advertising companies.