As for all β2-agonists, caution should be observed in patients with thyrotoxicosis and in patients with severe cardiovascular disorders, such as ischemic heart disease, tachyarrhythmias or severe heart failure.
Due to the hyperglycemic effects of β2-agonists, additional blood glucose controls are recommended initially in diabetic patients.
Potentially serious hypokalemia may result from β2-agonist therapy. Particular caution is recommended in acute severe asthma as the associated risk may be augmented by hypoxia. The hypokalemic effect may be potentiated by concomitant treatments (see Interactions). It is recommended that serum potassium levels are monitored in such situations.
Effects on the Ability to Drive and Use Machines: Terbutaline sulfate (BRICANYL) does not affect the ability to drive or use machines.