What is the recommended tapering schedule to discontinue lorazepam (0.25 mg daily) and trazodone (50 mg twice daily) while continuing buspirone (5 mg three times daily) and mirtazapine at night?

Tapering Lorazepam and Trazodone: Recommended Approach

You should taper lorazepam using a gradual 25% dose reduction every 1-2 weeks, and trazodone can be discontinued over 10-14 days, while maintaining buspirone and mirtazapine throughout the process.

Lorazepam Discontinuation Strategy

The benzodiazepine taper is your primary concern due to the risk of serious withdrawal symptoms including seizures, delirium, and in rare cases, death 1. At your low dose of 0.25 mg daily, you're in a favorable position, but the principles of gradual tapering still apply.

Specific Lorazepam Taper Schedule:

• Week 1-2: Reduce to 0.1875 mg daily (25% reduction)
• Week 3-4: Reduce to 0.125 mg daily (another 25% reduction)
• Week 5-6: Reduce to 0.0625 mg daily (another 25% reduction)
• Week 7-8: Discontinue completely

The FDA label explicitly states to "use a gradual taper to discontinue lorazepam or reduce the dosage" and to "pause the taper or increase the dosage to the previous tapered dosage level" if withdrawal reactions develop 2. Guidelines support a 25% dose reduction every 1-2 weeks as a safe, commonly used schedule 1. Research confirms this approach: a study showed 68.9% of patients successfully discontinued benzodiazepines using gradual tapering, with most withdrawal symptoms being mild 3.

Critical Implementation Details:

• You'll need to obtain lorazepam in liquid form or have a compounding pharmacy prepare smaller doses, as 0.0625 mg tablets aren't commercially available
• The hyperbolic (proportionate) tapering approach is pharmacologically superior to linear reductions because it produces consistent changes in GABA-A receptor occupancy, minimizing escalating withdrawal effects 4
• Monitor for withdrawal symptoms: anxiety, tremor, insomnia, sweating, tachycardia, headache, muscle aches 3

Trazodone Discontinuation Strategy

Trazodone at 50 mg twice daily (100 mg total) can be tapered more rapidly than lorazepam. Guidelines indicate that "discontinuing an antidepressant over 10 to 14 days limits withdrawal symptoms" 5.

Specific Trazodone Taper Schedule:

• Week 1-2: Reduce to 50 mg once daily at bedtime
• Week 3: Reduce to 25 mg at bedtime
• Week 4: Discontinue

This can be done concurrently with the lorazepam taper or sequentially—I recommend starting the trazodone taper after you've successfully reduced lorazepam by at least 50% to avoid compounding withdrawal symptoms.

Timing Considerations

Start with lorazepam first. The CDC guidelines specifically note that "when patients receiving both benzodiazepines and opioids require tapering to reduce risk for fatal respiratory depression, it might be safer and more practical to taper opioids first" due to greater risks of benzodiazepine withdrawal 6. While you're not on opioids, the principle applies: benzodiazepine withdrawal carries more serious risks than antidepressant withdrawal, so establish stability with the benzodiazepine taper before adding complexity.

Maintaining Your Target Regimen

Continue buspirone 5 mg three times daily and mirtazapine at night unchanged throughout the entire taper process. These medications will help mitigate anxiety and insomnia that may emerge during withdrawal. Notably, guidelines recognize that trazodone and mirtazapine can help manage withdrawal symptoms from other medications 7, so your mirtazapine may actually buffer some withdrawal effects.

Buspirone requires 2-4 weeks to become fully effective 5, so if you're not already at steady state, this is another reason to proceed gradually with your tapers.

Common Pitfalls to Avoid

1. Don't taper too quickly: Even at low doses, rushing increases withdrawal severity and failure rates
2. Don't stop abruptly: This can precipitate seizures with benzodiazepines 2
3. Don't confuse withdrawal with relapse: Withdrawal symptoms (physical: tremor, sweating, tachycardia) differ from anxiety relapse (psychological worry without prominent physical symptoms)
4. Don't hesitate to slow down: If you experience significant withdrawal symptoms, pause at your current dose for 1-2 weeks before continuing, or step back up one level 2

Monitoring and Adjustment

Check in with your prescriber every 2 weeks during the taper. If withdrawal symptoms are intolerable at any reduction, hold at that dose for an additional 1-2 weeks before proceeding. Some patients require slower tapers extending over several months 1, and this is medically appropriate—the goal is successful discontinuation, not speed.

The evidence strongly supports that gradual, patient-specific tapering with close monitoring produces the highest success rates while minimizing distress 8, 4.