Acetylcysteine Oral Inhalation

Acetylcysteine Oral Inhalation
Acetylcysteine Oral Inhalation

Uses of Acetylcysteine Oral Inhalation

Acetylcysteine oral inhalation is used along with other treatments to relieve chest congestion due to thick or abnormal mucous secretions in people with lung conditions including asthma, emphysema, bronchitis and cystic fibrosis (an inborn disease that causes problems with breathing, digestion, and reproduction). Acetylcysteine is in a class of medications called mucolytic agents. It works by thinning the mucus in the air passages to make it easier to cough up the mucus and clear the airways.

Side Effects of Acetylcysteine Oral Inhalation

  • nausea
  • vomiting
  • fever
  • runny nose
  • swelling of the inside of the mouth
  • throat irritation
  • drowsiness
  • cool, moist skin

Some side effects can be serious. If you experience any of these symptoms call your doctor immediately or get emergency medical treatment:

Acetylcysteine may cause other side effects. Call your doctor if you have any unusual problems while using this medication.

Warnings & Precautions

Before using acetylcysteine oral inhalation:

  • tell your doctor and pharmacist if you are allergic to acetylcysteine, any other medications, or any of the ingredients in acetylcysteine oral inhalation. Ask your pharmacist for a list of the ingredients.
  • tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take.
  • tell your doctor if you have or have ever had asthma.
  • tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while using acetylcysteine, call your doctor.


Acetylcysteine comes as a solution (liquid) and a concentrated solution to inhale by mouth using a nebulizer (a machine that turns medication into a mist that can be inhaled). When using a nebulizer, it is usually used 3 to 4 times a day. When given by other methods, acetylcysteine should be used as directed. Use acetylcysteine oral inhalation at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Use acetylcysteine oral inhalation exactly as directed. Do not use more or less of it or use it more often than prescribed by your doctor. Only mix acetylcysteine with other medications if instructed to do so by your doctor.
The concentrated solution of acetylcysteine oral inhalation should be mixed with normal saline or sterile water and used within an hour.

There may be a slight unpleasant odor when you use acetylcysteine that goes away quickly. In an opened bottle of acetylcysteine, there may be a color change to a light purple, but it will not affect use.

Acetylcysteine oral inhalation should only be used with nebulizers made of plastic or glass. Acetylcysteine should not be routinely used in a hand bulb operated nebulizer or put directly into a heated nebulizer. Talk to your doctor or pharmacist about the correct nebulizer to use with acetylcysteine.

Clean your nebulizer immediately following each use. If you do not clean your nebulizer properly, the nebulizer may become clogged and may not allow the medication to be inhaled. Follow the manufacturer’s directions carefully and ask your doctor or pharmacist if you have any questions about cleaning your nebulizer.


Keep all appointments with your doctor.

Do not let anyone else use your medication. Ask your pharmacist any questions you have about refilling your prescription of acetylcysteine oral inhalation .

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.


All information has been provided courtesy of MedLinePlus from the National Library of Medicine and from the FDA.