What is the most appropriate first-line treatment for essential tremor?

• A. Alprazolam
• B. Carbidopa
• C. Gabapentin
• D. Propranolol

Answer: (D)

Essential tremor often improves with medications that dampen peripheral adrenergic activity, and the best first-line option is a nonselective beta-adrenergic blocker. Propranolol reduces the amplitude of action tremor in tasks like writing or pouring by blocking beta receptors that help drive the tremor circuits. It’s effective for many patients and is generally well tolerated at low to moderate doses. However, it can cause side effects such as slowed heart rate, lowered blood pressure, fatigue, and is not suitable for people with asthma, COPD, or certain heart block conditions.

If propranolol isn’t suitable or doesn’t fully control the tremor, primidone (a barbiturate) is a common second-line option with good efficacy. Other drugs like gabapentin or benzodiazepines may be used in some cases but don’t have as strong evidence for first-line use. Carbidopa is used for Parkinson disease tremor, not essential tremor, so it isn’t appropriate here.