For the treatment or prevention of an asthma attack, the recommended pirbuterol dosage is two sprays, as frequently as every four to six hours. You should not use more than 12 inhalations each day. Among the factors that can affect pirbuterol dosing are the severity of your asthma or other respiratory problems and other drugs you may be currently taking. You should not adjust your dose of pirbuterol unless your healthcare provider specifically instructs you to do so.
The dose of pirbuterol acetate (Maxair®) that your healthcare provider recommends will vary depending on a number of factors, including:
- Whether you use pirbuterol to treat or prevent asthma attacks
- The severity of your asthma or other respiratory problems
- Other medications you may be taking.
As always, do not adjust your pirbuterol dose unless your healthcare provider specifically instructs you to do so.
Pirbuterol inhalers will not be made, dispensed, or sold in the United States in their current form after December 31, 2013. Pirbuterol inhalers contain chlorofluorocarbons (CFCs), chemicals that deplete the ozone layer. The U.S. Food and Drug Administration (FDA) has set this final date for the medication in order to comply with the Montreal Protocol on Substances That Deplete the Ozone Layer. The manufacturer of pirbuterol is working on a reformulated, CFC-free version, although it is not yet clear when that product will be available to consumers.
Pirbuterol Dosing for Asthma
To treat or prevent an asthma attack, the recommended pirbuterol dose is two sprays of pirbuterol as needed, as frequently as every four to six hours. For some people, only one spray will be needed to control asthma symptoms. If you need to use your pirbuterol asthma inhaler more often than prescribed, talk with your healthcare provider about adding an additional asthma medication. Do not use more than 12 pirbuterol inhalations per day.
If pirbuterol is not adequately controlling an asthma attack, seek medical attention immediately, as this may be an emergency.