Which of the following is a common side effect of terbutaline?

• A. A. Hypotension.
• B. B. Bradycardia.
• C. C. Hyperglycemia.
• D. D. Drowsiness.

Answer: (C)

Terbutaline is a beta-2 adrenergic agonist primarily used as a bronchodilator in the treatment of asthma and other conditions involving bronchospasm. One of the common side effects associated with this medication is hyperglycemia, which refers to elevated blood sugar levels.

The mechanism behind this side effect involves the activation of beta-2 receptors that promote glycogenolysis and gluconeogenesis in the liver, ultimately leading to an increase in blood glucose levels. This effect can be particularly notable in patients with diabetes or those who are sensitive to changes in blood sugar.

Additionally, while terbutaline can cause other side effects, such as tremors or tachycardia due to its stimulant effects, hyperglycemia is of particular concern as it can require monitoring and management in susceptible individuals. Therefore, the association of terbutaline with hyperglycemia makes this answer the most relevant in the context of its pharmacological effects.