This medication is a prodrug of terbutaline, prescribed for chronic bronchial asthma. It relaxes airway muscles that results in easy breathing.

Contraindicated in people with severe liver impairment; pregnancy and hypersensitivity.

PO: Initially 10 mg at bedtime, increased if necessary to 20 mg once daily.

It comes as a tablet to take by mouth, with or without food.

• Caution should be exercised in patients with history of diabetes, thyroid disease, high blood pressure, heart disease and during lactation.

•  Most Common: Tremor, nervousness, tension, headache and palpitations.

Avoid excess dosage.

Oral: Store it at room temperature (30°C).