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Drugs Dictionary: Alprazolam

Alprazolam

Trade Name

Xanax (immediate-release), Xanax XR (extended-release); generic alprazolam

Classification

Benzodiazepine; anxiolytic, sedative-hypnotic; Schedule IV controlled substance

Dosage/Route

  • * Dosage:
    •      – Immediate-release (IR): 0.25 mg, 0.5 mg, 1 mg, 2 mg tablets
    •      – Extended-release (XR): 0.5 mg, 1 mg, 2 mg, 3 mg tablets
  • * Route: Oral (PO)

Usual Dosage

  • * Anxiety: IR: 0.25-0.5 mg PO 2-3 times daily (BID-TID); max 4 mg/day
  • * Panic Disorder: IR: 0.5 mg PO TID, titrate to 1-10 mg/day; XR: 3-6 mg PO once daily
  • * Elderly/Debilitated: Start 0.25 mg PO BID-TID; lower max doses
  • * Short-term use (≤8-12 weeks); taper to discontinue

Mechanism of Action

Enhances GABA activity by binding to benzodiazepine receptors on the GABA-A complex in the CNS. Increases inhibitory neurotransmission, producing anxiolytic, sedative, and anticonvulsant effects

Side Effects & Adverse Effects

  • * Side Effects: Drowsiness, dizziness, fatigue, dry mouth
  • * Adverse Effects:
    •      – Dependence/withdrawal (boxed warning; seizures, agitation if stopped abruptly)
    •      – Respiratory depression (esp. with opioids/alcohol)
    •      – Memory impairment, confusion (esp. elderly)
    •      – Paradoxical excitation (rare; agitation)

Nursing Management (Implications & Teachings)

  • * Implications:
    •      – Assess sedation level, fall risk (esp. elderly)
    •      – Monitor for abuse/dependence (Schedule IV); track refills
    •      – Avoid with CNS depressants (e.g., opioids—boxed warning)
    •      – Taper dose if stopping (e.g., reduce 0.5 mg q3 days)
  • * Teachings:
    •      – Take as prescribed; don’t increase dose
    •      – Avoid alcohol/driving (impairs alertness)
    •      – Report worsening anxiety, confusion, or breathing issues
    •      – Don’t stop suddenly—consult provider for taper

Indication for This Patient

  • * Anxiety disorders (short-term relief of symptoms)
  • * Panic disorder (with/without agoraphobia)

Time

  • * Timing: IR: 2-3 times daily; XR: once daily (morning)
  • * Onset: IR: 15-30 min; XR: 1-2 hours
  • * Peak: IR: 1-2 hours; XR: 5-11 hours
  • * Duration: IR: 6-12 hours; XR: 24 hours

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