Following are the drugs used in alcohol dependence to prevent relapse except –
**Core Concept**
The management of alcohol dependence involves a combination of medications and behavioral therapies to prevent relapse. Medications such as disulfiram, naltrexone, and acamprosate are used to reduce cravings and prevent relapse by modulating neurotransmitter systems involved in reward and motivation.
**Why the Correct Answer is Right**
Acamprosate is a glutamate and GABA modulator that helps to restore balance between these neurotransmitters, which is disrupted in individuals with alcohol dependence. It is thought to reduce cravings and prevent relapse by normalizing the activity of glutamate and GABA systems in the brain.
**Why Each Wrong Option is Incorrect**
**Option A:** Disulfiram is a medication that is used to prevent relapse in individuals with alcohol dependence. It works by inhibiting aldehyde dehydrogenase, an enzyme that breaks down acetaldehyde, a toxic byproduct of alcohol metabolism. If a person takes disulfiram and consumes alcohol, they will experience uncomfortable symptoms such as flushing, nausea, and vomiting, which serve as a deterrent to drinking.
**Option B:** Naltrexone is an opioid receptor antagonist that is used to prevent relapse in individuals with alcohol dependence. It works by blocking the action of endogenous opioids, which are involved in the reward and pleasure associated with drinking. By blocking these receptors, naltrexone reduces the reinforcing effects of alcohol and decreases cravings.
**Option C:** Buprenorphine is a medication that is used to treat opioid dependence, not alcohol dependence. It is a partial opioid agonist that works by activating opioid receptors, but with a lower efficacy than full agonists like heroin or morphine. Buprenorphine is used to reduce withdrawal symptoms and cravings in individuals with opioid dependence.
**Clinical Pearl / High-Yield Fact**
Acamprosate is often used in combination with behavioral therapies, such as cognitive-behavioral therapy, to improve treatment outcomes in individuals with alcohol dependence.
**Correct Answer:** C. Buprenorphine