Maxair

DRUG DESCRIPTION

The active component of MAXAIR AUTOHALER (pirbuterol acetate) is (R,S)?6-{[(1,1-dimethylethyl) amino]methyl}-3-hydroxy-2,6-pyridinedimethanol monoacetate salt, a beta-2 adrenergic bronchodilator, having the following chemical structure:

MAXAIR® AUTOHALER® 
  (pirbuterol acetate) Structural Formula Illustration

Pirbuterol acetate is a white, crystalline racemic mixture of two optically active isomers. It is a powder, freely soluble in water, with a molecular weight of 300.3 and empirical formula of C12H20N2O3•C2H4O2.

MAXAIR (pirbuterol) AUTOHALER is a pressurized metered-dose aerosol unit for oral inhalation. It provides a fine-particle suspension of pirbuterol acetate in the propellant mixture of trichloromono fluoromethane and dichlorodifluoromethane, with sorbitan trioleate. Each actuation delivers 253 mcg of pirbuterol (as pirbuterol acetate) from the valve and 200 mcg of pirbuterol (as pirbuterol acetate) from the mouthpiece. The unit is breath-actuated such that the medication is delivered automatically during inspiration without the need for the patient to coordinate actuation with inspiration. Each 14.0 g canister provides 400 inhalations and each 2.8 g canister provides 80 inhalations.

As with all aerosol medications, it is recommended to prime (test) MAXAIR (pirbuterol) AUTOHALER before using for the first time. MAXAIR (pirbuterol) AUTOHALER should also be primed if it has not been used in 48 hours. As described in the priming procedure, use the test fire slide to release two priming sprays into the air away from yourself and other people. (See "Patient's Instructions For Use" portion of this package insert.)

What are the possible side effects of pirbuterol inhalation (Maxair, Maxair Autohaler)?

Stop using pirbuterol and seek emergency medical attention if you experience any of the following serious side effects:

  • an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives); or
  • chest pain or irregular heartbeats.

Other, less serious side effects may be more likely to occur. Continue to use pirbuterol inhalation and talk to your doctor if you experience

  • headache, dizziness, lightheadedness, or...

Read All Potential Side Effects and See Pictures of Maxair »


Maxair Patient Information Including Side Effects

Brand Names: Maxair, Maxair Autohaler

Generic Name: pirbuterol inhalation (Pronunciation: peer BYOO ter ole)

  • What is pirbuterol inhalation (Maxair)?
  • What are the possible side effects of pirbuterol inhalation (Maxair)?
  • What is the most important information I should know about pirbuterol inhalation (Maxair)?
  • Who should not use pirbuterol inhalation (Maxair)?
  • How should I use pirbuterol inhalation (Maxair)?
  • What happens if I miss a dose (Maxair)?
  • What happens if I overdose (Maxair)?
  • What should I avoid while using pirbuterol inhalation (Maxair)?
  • What other drugs will affect pirbuterol (Maxair)?
  • Where can I get more information?

What is pirbuterol inhalation (Maxair)?

Pirbuterol is a bronchodilator. It works by relaxing muscles in the airways to improve breathing.

Pirbuterol inhalation is used to treat conditions such as asthma, bronchitis, and emphysema.

Pirbuterol inhalation may also be used for conditions other than those listed in this medication guide.

What are the possible side effects of pirbuterol inhalation (Maxair)?

Stop using pirbuterol and seek emergency medical attention if you experience any of the following serious side effects:

  • an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives); or
  • chest pain or irregular heartbeats.

Other, less serious side effects may be more likely to occur. Continue to use pirbuterol inhalation and talk to your doctor if you experience

  • headache, dizziness, lightheadedness, or insomnia;
  • tremor or nervousness;
  • sweating;
  • nausea, vomiting, or diarrhea; or
  • dry mouth.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about pirbuterol inhalation (Maxair)?

It is very important that you use your pirbuterol inhaler properly, so that the medicine gets into your lungs. Your doctor may want you to use a spacer with your inhaler. Talk to your doctor about proper inhaler use.

Seek medical attention if you notice that you require more than your usual or more than the maximum amount of any asthma medication in a 24-hour period. An increased need for medication could be an early sign of a serious asthma attack.

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