Combivent etc. (Albuterol; Ipratropium)

Combivent is a combination of bronchodilator drugs, albuterol and ipratropium, that prevent wheezing, shortness of breath, and obstructive breathing caused by chronic obstructive pulmonary disease (COPD) by relaxing the muscles in the airways to prevent bronchospasm.  The action enlarges the airways to allow air to flow freely in and out of the lungs.
Albuterol and ipratropium work differently though.  Albuterol is sympathomimetic and works as a rescue medication bringing quick relief of asthma symptoms.  On the other hand, ipratropium is anticholinergic and is a long-lasting bronchodilator that is used as asthma prevention therapy and not as a rescue medication.  Combivent is available as a metered-dose aerosol inhaler delivering 90mcg of albuterol plus 18mcg of ipratropium per actuation of the inhaler.

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