How should I manage a patient on diazepam 4 mg four times daily reduced to three times daily and started on buspirone who now has tinnitus and electric‑shock sensations?

Immediately slow or reverse the diazepam taper and consider stopping buspirone

Your patient is experiencing benzodiazepine withdrawal symptoms—the "brain zaps" (electric shock sensations) and tinnitus are classic manifestations of too-rapid benzodiazepine reduction, likely exacerbated by the recent switch to buspirone.

Understanding What's Happening

The symptoms described—electric shock sensations in the brain and tinnitus—are hallmark features of benzodiazepine withdrawal. Reducing from 16 mg/day to 12 mg/day (a 25% reduction) is too aggressive for someone on chronic high-dose diazepam. The guideline evidence is clear: benzodiazepine withdrawal should be gradual over many weeks, not abrupt reductions 1. The FDA label for diazepam explicitly warns to "use a gradual taper to discontinue diazepam or reduce the dosage" to reduce withdrawal reactions 2.

The concurrent initiation of buspirone compounds this problem. Research demonstrates that patients who recently discontinued benzodiazepines have significantly higher attrition rates and adverse events when started on buspirone, with lack of efficacy being the primary complaint 3. This suggests buspirone is poorly tolerated during active benzodiazepine withdrawal.

Immediate Management Steps

1. Return to the previous diazepam dose (4 mg four times daily)

• This will alleviate the withdrawal symptoms within 24-48 hours
• The electric shock sensations and tinnitus should resolve once the benzodiazepine level stabilizes
• Do not attempt to "push through" these symptoms—they indicate neurological distress

2. Discontinue or hold the buspirone temporarily

• Buspirone is ineffective during active benzodiazepine withdrawal 3
• The drug may be contributing to the tinnitus, though benzodiazepine withdrawal is the more likely culprit
• If anxiety control is needed, the diazepam itself provides this

3. Restart the taper much more slowly

• Wait at least 2-4 weeks after symptoms resolve before attempting another reduction
• Reduce by only 10% of the current dose every 2-4 weeks, not 25% as was done 1
• For this patient: reduce by 1-2 mg total daily dose every 2-4 weeks (e.g., from 16 mg/day to 14-15 mg/day)
• The EMPOWER trial demonstrated success with gradual reductions over many weeks 1

When to Consider Buspirone (If At All)

• Only after the patient is completely off benzodiazepines for at least 1 month 3
• Research shows buspirone works similarly to benzodiazepines in patients with no recent benzodiazepine exposure, but fails in those with recent use
• Consider alternative anxiolytics during the taper: SSRIs, SNRIs, or cognitive-behavioral therapy 1

Critical Pitfalls to Avoid

• Do not dismiss these symptoms as "adjustment reactions"—they represent genuine neurological withdrawal
• Do not continue the current regimen hoping symptoms will improve—they will worsen and may lead to seizures at higher withdrawal rates
• Do not use the 25% weekly reduction rule often cited in literature 1—this is too aggressive for most patients, especially those on high doses or long-term therapy
• Do not assume buspirone will substitute for benzodiazepine effects—it acts on different receptors and provides no cross-tolerance

Monitoring After Intervention

Once you restore the previous dose:

• Symptoms should improve within 1-2 days
• If tinnitus persists beyond 1 week after dose restoration, consider audiometry to rule out other causes (though benzodiazepines themselves have been studied for tinnitus treatment 4, 5)
• Patient education is essential: explain that the taper will take months, not weeks, and that this protects against serious complications

The priority here is preventing progression to more severe withdrawal (seizures, delirium) while maintaining quality of life. A slower taper may seem frustrating, but it's the only evidence-based approach that balances safety with the goal of benzodiazepine discontinuation 1, 2.