Isoproterenol hydrochloride (Medihaler-Iso®) is a beta adrenergic receptor agonist medication, used as an inhaled aerosol to treat asthma. Although it activates all beta adrenergic receptors, it works in a similar fashion to the more selective beta2-adrenergic receptor agonists by relaxing the airways to increase airflow.

It is also supplied in ampules under the brand name Isuprel® for injection and in sublingual pill form for treatment of asthma, chronic bronchitis and emphysema.

It is structurally similar to epinephrine but acts for the most part on beta receptors.

Used with caution, it can also be used to treat Torsade de pointes, in conjunction with overdrive pacing and magnesium.

CHEMICAL FACTS:

Molecular weight: 247.72

Molecular formula: C₁₁H₁₇NO₃ • HCl

Chemical name: 3,4-Dihydroxy-α-methyl benzyl alcohol hydrochloride

Description: Synthetic sympathomimetic amine