Which of the following is a potential side effect of taking beta-blockers?

Bradycardia is a well-documented potential side effect of taking beta-blockers. These medications work by blocking the effects of adrenaline on the beta-adrenergic receptors in the heart, leading to a decrease in heart rate and contractility. This mechanism effectively lowers heart rate and blood pressure, making beta-blockers useful in managing conditions such as hypertension, heart failure, and arrhythmias.

While weight loss, hypertension, and increased anxiety are not typical side effects associated with beta-blockers, bradycardia directly reflects the impact of the medication on heart rate. Clinicians often monitor patients for this side effect, as excessively low heart rates can lead to symptoms such as fatigue, dizziness, or fainting, requiring potential adjustments in medication dosages or alternative treatments. Understanding this side effect is crucial for providing effective patient care and managing treatment plans effectively.