**Core Concept**
Schizophrenia is a chronic psychiatric disorder characterized by positive symptoms (e.g., hallucinations, delusions), negative symptoms (e.g., blunted affect, avolition), and cognitive deficits. The primary pharmacological treatment targets dopamine dysregulation, particularly hyperactivity in the mesolimbic pathway, which is linked to positive symptoms.

**Why the Correct Answer is Right**
Anti-psychotics (also known as neuroleptics) are the first-line treatment for schizophrenia. They primarily block dopamine D2 receptors in the brain, reducing psychotic symptoms. First-generation (typical) anti-psychotics like haloperidol and second-generation (atypical) anti-psychotics like olanzapine and risperidone are effective in managing both positive and negative symptoms. The mechanism of action directly addresses the neurochemical imbalance underlying schizophrenia.

**Why Each Wrong Option is Incorrect**
Option A: Anti-depressants are used in depression and anxiety disorders, not schizophrenia. They do not address core psychotic symptoms and are ineffective as monotherapy for schizophrenia.
Option C: Anti-epileptics (e.g., carbamazepine) may be used as adjunctive therapy in some cases (e.g., for seizures or co-morbid conditions), but they are not first-line treatments for schizophrenia.
Option D: Mood stabilizers (e.g., lithium, valproate) are used in bipolar disorder and are not indicated for schizophrenia.

**Clinical Pearl / High-Yield Fact**
Always remember: **"Schizophrenia = Anti-psychotics."** First-line treatment is never antidepressants or mood stabilizers. If a patient has schizophrenia, anti-psychotics are essential; antidepressants are only added if there is co-morbid depression.

✓ Correct Answer: B. Anti psychotics