Which term describes the class of medications that includes drugs like lorazepam and is known for enhancing GABA activity?

• A. Benzodiazepines
• B. Antidepressants
• C. Antipsychotics
• D. Stimulants

Answer: (A)

Benzodiazepines are the class that includes lorazepam and is known for enhancing GABA activity. They bind to a specific site on the GABA_A receptor and act as positive allosteric modulators, increasing how often the receptor’s chloride channel opens in the presence of GABA. This boosts inhibitory signals in the brain, making neurons less excitable and producing calming, anxiolytic, sedative, and anticonvulsant effects. The other classes don’t primarily work by enhancing GABA: antidepressants raise mood by increasing serotonin and/or norepinephrine, antipsychotics block dopamine receptors, and stimulants boost catecholamine activity. So, the best description for this drug class is benzodiazepines.