Duloxetine Discontinuation Protocol
Gradually taper duloxetine over at least 2 weeks before complete discontinuation to minimize withdrawal symptoms. 1, 2
Recommended Tapering Schedule
The standard approach is to reduce the dose gradually over a minimum 2-week period before stopping completely. 1, 2
For patients on 60 mg daily:
- Reduce to 30 mg daily for 1-2 weeks 3
- Then discontinue completely
- Monitor for discontinuation symptoms throughout
For patients on higher doses (120 mg daily):
- Reduce to 60 mg daily for 1 week 2
- Then reduce to 30 mg daily for 1-2 weeks 3
- Then discontinue completely
- Note: Higher doses (120 mg/day) are associated with more frequent discontinuation symptoms 2
Expected Discontinuation Symptoms
Approximately 44% of patients experience discontinuation-emergent adverse events (DEAEs) when stopping duloxetine, compared to 23% with placebo. 2
Most common symptoms (in order of frequency):
- Dizziness (12.4%) - the single most common symptom 2
- Nausea (5.9%) 2
- Headache (5.3%) 2
- Paresthesia (2.9%) 2
- Vomiting (2.4%) 2
- Irritability (2.4%) 2
- Nightmares (2.0%) 2
Symptom characteristics:
- Most symptoms are mild to moderate in severity 2
- 65% of symptoms resolve within 7 days 2
- 45% of all discontinuation symptoms resolve by study end 2
- The average patient experiencing symptoms reports 2.4 different symptoms 2
Monitoring During Taper
Assess patients at least weekly during the tapering period for:
- Dizziness and nausea - the two most problematic symptoms 2
- Return of depression or anxiety symptoms 4, 5
- Blood pressure changes - SNRIs can affect blood pressure 3
- Emergence of suicidal thoughts - though duloxetine does not increase suicide risk compared to placebo 1
Management of Withdrawal Symptoms
If significant discontinuation symptoms emerge:
- Resume the previous dose and taper more slowly 2
- Consider extending the taper to 3-4 weeks or longer 2
- Symptomatic treatment may be appropriate (e.g., antiemetics for nausea) 2
If dizziness is severe:
- Slow the taper further 2
- Ensure adequate hydration 2
- Advise caution with activities requiring balance 2
Special Populations
Elderly patients:
- Use the same tapering schedule - no specific dose adjustment required for age alone 3
- Monitor more closely for dizziness and falls risk 3
- Assess renal function - duloxetine requires dose reduction in renal insufficiency 3
Patients on extended treatment (>6 months):
- Extended treatment does not increase the incidence or severity of discontinuation symptoms 2
- Use the same 2-week minimum taper 2
Critical Pitfall to Avoid
Never discontinue duloxetine abruptly unless medically necessary - abrupt discontinuation produces a discontinuation syndrome similar to other SSRIs and SNRIs, with nearly double the symptom rate compared to gradual tapering. 1, 2