Terbutaline is a β2-adrenergic receptor agonist which acts to block smooth muscle activity.
It is frequently used for human sufferers of asthma.
This drug is acts as a tocolytic (postpones uterine contractions during labor) as well as a fast-acting bronchodilator, causing relaxation of proximal and distal airways, similar in effect to aminophylline and diltiazem, but whose mechanism of action differs.
In dogs it is indicated for respiratory distress syndrome.
- Akhtar S et al (1999) Differential bronchodilatory effects of terbutaline, diltiazem, and aminophylline in canine intraparenchymal airways. Crit Care Med 27(8):1551-1556