NBEO Pharmacology Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

Diazepam is a benzodiazepine that is often used for its anxiolytic, anticonvulsant, and muscle relaxant properties. One of the hallmark side effects associated with this class of medications is somnolence, which refers to a state of strong desire for sleep or drowsiness. As a depressant of the central nervous system, diazepam enhances the effects of neurotransmitters that promote sedation and relaxation, leading to an increased likelihood of sleepiness and reduced alertness.

While the other options present various symptoms or side effects, somnolence is particularly common with diazepam due to its sedative action. For instance, bradycardia, which is a slower than normal heart rate, is not typically a common side effect associated with diazepam; rather, it may occur in other contexts. Mydriasis, or dilation of pupils, is not a usual effect of diazepam either—it tends to be more associated with different classes of drugs. Finally, diarrhea can occur for various reasons but is not prominently linked to the use of diazepam.

Understanding the common side effects of diazepam is essential for managing patient expectations and monitoring for potential adverse reactions.