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FMGE 2009 — Psychiatry

Q: Drug of choice for obsessive-compulsive disorder is:

Fluoxetine. ***Fluoxetine*** - **Selective serotonin reuptake inhibitors (SSRIs)** are the first-line pharmacological treatment for **obsessive-compulsive disorder (OCD)**. - **Fluoxetine** was traditionally considered a primary choice for OCD treatment and is FDA-approved for this indication. - It works by selectively inhibiting serotonin reuptake, increasing serotonergic neurotransmission, which is crucial in OCD pathophysiology. - Higher doses are typically required for OCD compared to depression (40-80 mg/day). *Sertraline* - **Sertraline** is also an **SSRI** and equally effective as fluoxetine for OCD treatment. - It is FDA-approved for OCD and considered a first-line option. - In current clinical practice, **all SSRIs (fluoxetine, sertraline, fluvoxamine, paroxetine) are considered equally appropriate first-line choices** with no single "drug of choice." - Selection depends on individual patient factors, side effect profile, and drug interactions. - **Note:** Both fluoxetine and sertraline are correct answers in modern practice; this question reflects historical exam teaching. *Alprazolam* - **Alprazolam** is a **benzodiazepine** used for short-term relief of anxiety and panic attacks. - It does not address the core pathophysiology of OCD (obsessions and compulsions). - Not recommended as monotherapy for OCD; may be used adjunctively for severe anxiety symptoms. *Chlorpromazine* - **Chlorpromazine** is a **first-generation antipsychotic** used primarily for schizophrenia and psychotic disorders. - Not indicated for OCD treatment as monotherapy. - Antipsychotics may be used as **augmentation** in treatment-resistant OCD but only as add-on to SSRIs. [Practice more Psychiatry PYQs on OnCourse]

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Drug of choice for obsessive-compulsive disorder is: