Also Known As: Isoproterenol, Isoprenaline, Isuprel, Medihaler-Iso

Isoprenaline (INN) or isoproterenol (USAN, trade names Medihaler-Iso and Isuprel) is a medication used for the treatment of bradycardia (slow heart rate), heart block, and rarely for asthma. It is a non-selective beta-adrenergic agonist and structurally similar to adrenaline.

Its primary use is for bradycardia or heart block. By activating β1-receptors on the heart, it induces positive chronotropic, dromotropic, and inotropic effects.[1]

It can be used as an inhaled aerosol to treat asthma, although this is currently a rare treatment.[1] Although it activates all beta adrenergic receptors, it works in a similar fashion to the more selective β2-adrenergic agonists e.g. salbutamol, 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.

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

Print this Page

All Treatments

Average Effectiveness

This is the Average effectiveness per ailment as reported by our participants (you).

  • 0 = No improvement or Worse
  • 1 = Slight improvement
  • 2 = Moderate Improvement
  • 3 = Significant Improvement
  • 4 = Cured

Order By

Type of Treatment

Date Range

Minimum Number of Users

Complete a survey on Isoproterenol to help the CureCrowd community

If you have tried to treat this ailment, please complete the following form to help us better our data, and help guide people to the best possible treatments. CureCrowd is a public resource with absolutely no vested interest in the outcomes of our studies.