It is a member of the family of medications which is in use for
1. stopping the contractions of preterm labor (tocolytics)
It is a beta 2 adrenergic receptor agonist.
The inhaled form of terbutaline starts working in 10-15 minutes and lasts for about 5-6 hours.
It may cause tachycardia, pulmonary edema, hypokalemia and in fetus it may also cause hypoglycemia.
Beta 2-agonists in Asthma Treatment (Lung Biology in Health and Disease) by Romain Pauwels and Paul O. Byrne