Mucomyst - how should this be taken and the dosage for adults?

How to use Mucomyst Solution:

Use Mucomyst Solution as directed by your doctor. Check the label on the medicine for exact dosing instructions.

* Mucomyst Solution is inhaled into the lungs using a nebulizer. Your doctor will demonstrate the proper way to use the nebulizer. Be sure to only use the nebulizer recommended by your doctor.
* If Mucomyst Solution is used with a face mask, a sticky substance may appear on the face. The stickiness can be removed by washing the face with water.
* If you miss a dose of Mucomyst Solution, use it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not use 2 doses at once.

http://www.drugs.com/cdi/mucomyst-solution.html

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The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

* For inhalation dosage form (solution):
o To thin or dissolve mucus in lung diseases:
+ Adults and children—
# 3 to 5 milliliters (mL) of a 20% solution or 6 to 10 mL of a 10% solution used in a nebulizer three or four times a day. The medicine is inhaled through a face mask, mouthpiece, or tracheostomy.
# The 10 or 20% solution may be used for inhalation as a heavy mist in a tent or croupette.
# Sometimes the 10 or 20% solution is placed directly into the trachea or through a catheter into the trachea for certain conditions.
o For use in tests to diagnose lung problems:
+ Adults and children—1 to 2 mL of a 20% solution or 2 to 4 mL of a 10% solution used for inhalation or placed directly into the trachea two or three times before the test.

http://www.drugs.com/cons/mucomyst.html