Which of the following is not listed among albuterol's commonly reported side effects?

• A. Tachycardia
• B. Restlessness
• C. Bradycardia
• D. Anxiety

Answer: (C)

Albuterol’s usual side effects come from sympathetic nervous system stimulation. Even though it primarily targets beta-2 receptors to relax airway smooth muscle, some of that adrenergic activity can spill over and affect the heart and nerves. That’s why tachycardia is a common reaction—the heart rate can speed up with adrenergic stimulation and reflex effects of improved airway flow. Restlessness and anxiety also arise from central nervous system stimulation and overall sympathetic arousal.

Bradycardia, a slower-than-normal heart rate, is not among the commonly reported effects of albuterol. It would be an atypical finding for this medication and would suggest other factors at play. Therefore, bradycardia is the best choice for the option not listed as a common side effect.