In an 87-year-old patient who becomes anxious while taking hydroxyzine 12.5 mg every 8 hours as needed, what medication should be prescribed to manage excess anxiety?

Discontinue Hydroxyzine and Switch to Low-Dose Lorazepam

For this 87-year-old patient experiencing worsening anxiety on hydroxyzine, I recommend discontinuing hydroxyzine immediately and switching to lorazepam 0.25 mg orally as needed, with a maximum of 2 mg in 24 hours.

Why Hydroxyzine is Problematic in This Patient

The FDA label explicitly warns that hydroxyzine can cause paradoxical anxiety and agitation as an adverse effect 1. In elderly patients specifically, hydroxyzine causes confusion and over-sedation, and the label states "elderly patients generally should be started on low doses of hydroxyzine and observed closely" 1. Your patient is experiencing exactly this paradoxical reaction at 12.5 mg q8h.

Additionally, hydroxyzine carries significant risks in the elderly:

• QT prolongation and Torsade de Pointes, especially concerning in an 87-year-old who likely has cardiac risk factors 1
• Enhanced CNS depression effects in geriatric patients 1
• A 2024 algorithm specifically recommends caution with hydroxyzine for acute anxiety treatment in older adults 2

Recommended Alternative: Lorazepam

NICE guidelines specifically address anxiety management in elderly patients and recommend:

• Lorazepam 0.25-0.5 mg orally in elderly or debilitated patients (maximum 2 mg in 24 hours) 3

Dosing Strategy

• Start with lorazepam 0.25 mg orally as needed for anxiety episodes
• Can increase to 0.5 mg if 0.25 mg proves insufficient
• Maximum daily dose: 2 mg in 24 hours (not the 4 mg used in younger adults)
• Use PRN dosing rather than scheduled to minimize total benzodiazepine exposure

Why Lorazepam Over Other Options

The 2025 geriatric emergency guidelines found that lorazepam had a more favorable safety profile than midazolam in older adults, though higher doses were associated with respiratory adverse events 4. The key is using the lowest effective dose.

Critical Caveats

Short-term use only: Benzodiazepines should not be used chronically in the elderly due to risks of cognitive impairment, falls, and dependence 2, 5. This is a bridge therapy while you:

1. Investigate reversible causes of anxiety: hypoxia, urinary retention, constipation, pain, delirium 3
2. Review all medications for agents that could worsen anxiety
3. Consider transitioning to an SSRI if anxiety persists beyond 2-4 weeks

If Long-Term Treatment is Needed

If the patient requires ongoing anxiety management beyond a few weeks, the 2024 geriatric anxiety algorithm recommends 2:

• First-line: Sertraline or escitalopram (SSRIs)
• Second-line: Venlafaxine or duloxetine (SNRIs)
• Third-line: Pregabalin/gabapentin

These take 4-6 weeks to work, so lorazepam can bridge this period if needed.

What NOT to Do

• Do not use midazolam - the 2025 geriatric guidelines showed excessive adverse events in older adults 4
• Do not combine antipsychotic with benzodiazepine parentally - excessive risk in elderly 4
• Do not continue hydroxyzine - it's causing the problem, not solving it
• Avoid chronic benzodiazepine use - increases fall risk, cognitive impairment, and dependence in elderly 2

Monitoring

Watch for:

• Respiratory depression (especially if on other CNS depressants)
• Oversedation or confusion
• Falls or gait instability
• Paradoxical agitation (rare with lorazepam but possible)