Which of the following is an anti-psychotic drug?
**Core Concept**
The question is testing knowledge of psychopharmacology, specifically the classification and mechanism of action of anti-psychotic drugs. Anti-psychotics are a class of medications used to treat psychotic symptoms such as hallucinations, delusions, and disorganized thinking.
**Why the Correct Answer is Right**
The correct answer is a type of anti-psychotic drug that blocks dopamine receptors in the brain, particularly D2 receptors, which are involved in the regulation of movement and cognition. This blockade is believed to reduce the positive symptoms of schizophrenia, such as hallucinations and delusions. The correct answer is a typical antipsychotic, which is characterized by its ability to cause extrapyramidal side effects (EPS) due to its strong affinity for D2 receptors.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is an antidepressant medication that works by increasing the levels of serotonin and norepinephrine in the brain. It is not an anti-psychotic drug.
**Option B:** This option is an anticonvulsant medication that is used to treat seizures and bipolar disorder. While it may have some anti-psychotic properties, it is not a primary anti-psychotic medication.
**Option C:** This option is an anxiolytic medication that works by enhancing the activity of GABA in the brain. It is not an anti-psychotic drug.
**Clinical Pearl / High-Yield Fact**
When choosing an anti-psychotic medication, it's essential to consider the patient's risk of EPS, as well as their metabolic profile, due to the potential for weight gain and other metabolic side effects.
**Correct Answer:** C. Haloperidol.