Which medication is described as helping abstinence from alcohol by dampening glutamate activity?

• A. Acamprosate
• B. Disulfiram
• C. Naltrexone
• D. Methadone

Answer: (A)

Medications that support abstinence from alcohol often target brain signaling pathways involved in craving and withdrawal. Acamprosate works by dampening glutamatergic activity, which helps stabilize neuronal signaling after chronic alcohol exposure. This reduction in glutamate release and NMDA receptor activity lessens withdrawal-related hyperexcitability and lowers the risk of relapse during the abstinence period.

Disulfiram causes unpleasant effects if alcohol is consumed by inhibiting aldehyde dehydrogenase; it does not modulate glutamate for abstinence. Naltrexone blocks opioid receptors, reducing alcohol's rewarding effects, but its primary action isn’t on glutamate. Methadone is an opioid agonist used for opioid use disorder, not for dampening glutamate to support alcohol abstinence.

So acamprosate is the agent described for dampening glutamate activity to aid abstinence.