Albuterol (ventolin, proventil, others) is a selective b2 agonist with pharmacological properties and therapeutic indications similar to those of terbutaline. It is administered by inhalation or orally for the symptomatic relief of bronchospasm. When administered by inhalation, terbutaline produces significant bronchodilation within 15 minutes; effects persist for 3-4 hours. Cardiovascular effects of albuterol are considerably weaker than those of isoproterenol that produce comparable bronchodilation when administered by inhalation. Oral albuterol may delay preterm labor. Rare CNS and respiratory side effects are sometimes observed.
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If you suffer with asthma, you will no doubt be familiar with the uncomfortable sensations as your bronchial tubes begin to narrow and your muscles around them start to tighten. A sticky mucus known as phlegm begins to produce and increase within your bronchial tubes and you begin to wheeze, cough and struggle to breathe.