Anxiolytic Decision: Benzodiazepines vs Buspirone — Onset, Dependence, Clinical Selection
A client in acute panic needs relief in minutes, not weeks. Choosing buspirone for a panic attack wastes critical time; choosing a benzo for chronic GAD builds dependence. Mixing up these two on the NCLEX leads you to the wrong drug every time.
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- ↑ GABA-A effect → CNS depression
- 5-HT1A partial agonist
- Acute anxiety/panic, status epilepticus
- Alcohol withdrawal, procedural sedation
- Chronic GAD — scheduled, not PRN
- PO, IV, or IM
- Rapid onset (minutes)
- PO only
- ★Onset 1–2 wk, not for acute anxiety
- Sedation, respiratory rate, fall risk
- Anxiety response over weeks
- No routine drug levels
- No routine drug levels
- ★Sedation, dependence, tolerance
- Dizziness
- Dizziness
- Minimal sedation, no dependence
- Headache, nausea
- ★Black box: + opioids → fatal resp depression
- Overdose antidote: flumazenil
- No black box
- Low overdose risk
- Avoid alcohol/opioids/CNS depressants
- Avoid grapefruit and MAOIs
- Short-term use only
- Taper; abrupt stop → seizures
- Avoid driving until sedation known
- Take on a regular daily schedule
- Full effect takes weeks
Benzodiazepines
- ↑ GABA-A effect → CNS depression
Buspirone
- 5-HT1A partial agonist
Benzodiazepines
- Acute anxiety/panic, status epilepticus
- Alcohol withdrawal, procedural sedation
Buspirone
- Chronic GAD — scheduled, not PRN
Benzodiazepines
- PO, IV, or IM
- Rapid onset (minutes)
Buspirone
- PO only
- ★Onset 1–2 wk, not for acute anxiety
Benzodiazepines
- Sedation, respiratory rate, fall risk
Buspirone
- Anxiety response over weeks
Benzodiazepines
- No routine drug levels
Buspirone
- No routine drug levels
Benzodiazepines
- ★Sedation, dependence, tolerance
- Dizziness
Buspirone
- Dizziness
- Minimal sedation, no dependence
- Headache, nausea
Benzodiazepines
- ★Black box: + opioids → fatal resp depression
- Overdose antidote: flumazenil
Buspirone
- No black box
- Low overdose risk
Benzodiazepines
- Avoid alcohol/opioids/CNS depressants
Buspirone
- Avoid grapefruit and MAOIs
Benzodiazepines
- Short-term use only
- Taper; abrupt stop → seizures
- Avoid driving until sedation known
Buspirone
- Take on a regular daily schedule
- Full effect takes weeks
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Benzo = fast, addictive, must taper. Buspirone = slow, safe, no withdrawal — opposite profiles.
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