Librium tab uses
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Librium chlordiazepoxide tablet uses indications dosage
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Here is a complete summary of Librium (Chlordiazepoxide) tablet uses:
Librium (Chlordiazepoxide) - Uses
Drug class: Benzodiazepine | Schedule: C-IV controlled substance
Mechanism of Action
Chlordiazepoxide enhances the effect of GABA at the GABA-A receptor by increasing the frequency of chloride channel opening, causing neuronal hyperpolarization and CNS depression. - Lippincott Illustrated Reviews: Pharmacology
Approved (FDA) Indications
| Indication | Details |
|---|---|
| Anxiety disorders | Mild, moderate, or severe anxiety; both short-term and chronic management |
| Alcohol withdrawal | Reduces severity of tremors, agitation, seizures, and autonomic instability during acute withdrawal |
| Pre-operative anxiety | Given 3-4 days before surgery to reduce apprehension |
Dosage by Indication
| Condition | Adult Dose |
|---|---|
| Mild-moderate anxiety | 5-10 mg, 3-4 times daily |
| Severe anxiety | 20-25 mg, 3-4 times daily |
| Alcohol withdrawal | 50-100 mg initially; repeat q2-4h as needed (max ~300 mg/day) |
| Pre-op anxiety | 5-10 mg, 3-4 times daily on days before surgery |
| Elderly/debilitated | 5 mg, 2-4 times daily (reduce to minimize falls risk) |
| Children (>6 yrs) | 5 mg twice daily; may increase to 10 mg 2-3 times daily |
(Source: Drugs.com Librium Dosage Guide, FDA label)
Pharmacological Actions (All Benzodiazepines)
- Anxiolytic - reduces anxiety at low doses
- Sedative/Hypnotic - promotes sleep at higher doses
- Anticonvulsant - raises seizure threshold
- Muscle relaxant - reduces spasticity via spinal cord GABA-A receptors
- Amnestic - anterograde amnesia (useful for procedures)
Special Notes
- Alcohol withdrawal is one of chlordiazepoxide's most important uses - it is often preferred over other benzodiazepines because of its long half-life (5-30 hrs for parent drug; active metabolites add 10-78 hrs), allowing smoother tapering and less rebound.
- Not preferred in the elderly due to prolonged sedation from long-acting metabolites and increased fall/fracture risk.
- Carries an FDA boxed warning for physical dependence, withdrawal effects, and respiratory depression when combined with opioids.
- Historically significant: chlordiazepoxide was the first benzodiazepine marketed clinically (1960), predating diazepam (Valium). - Kaplan & Sadock's Comprehensive Textbook of Psychiatry
Contraindications
- Known hypersensitivity to chlordiazepoxide
- Caution in hepatic/renal impairment (reduce dose by 50% if CrCl <10 mL/min)
- Avoid or use extreme caution with concomitant opioids
Common Side Effects
- Drowsiness, sedation, ataxia
- Cognitive impairment, confusion (especially elderly)
- Tolerance and physical dependence with prolonged use
- Anterograde amnesia
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