Baclofen Dosing for Persistent Hiccups in Adults
For persistent hiccups in adults, start baclofen at 10 mg three times daily (30 mg/day total) for 5 days, which can be effective in stopping hiccups completely. 1, 2
Recommended Dosing Regimen
The evidence supports a straightforward approach:
- Initial dose: 10 mg orally three times daily (total 30 mg/day)
- Duration: 5 days for initial trial 2
- Maximum dose: Can titrate up to 80 mg/day if needed, though this is rarely necessary for hiccups 1
This dosing is based on the only randomized, double-blind, placebo-controlled trial specifically for hiccups in stroke patients, where 10 mg three times daily for 5 days resulted in complete cessation of hiccups in significantly more patients compared to placebo (RR 7.00,95% CI 1.91-25.62, P=0.003) 2.
Evidence Quality and Nuances
The evidence for baclofen in hiccups is mixed but favors its use:
- The 2014 RCT 2 showed clear benefit in stroke patients with persistent hiccups
- However, a large 2024 multisite study 3 found only 35% of patients achieved hiccup palliation, falling short of the 75% threshold the authors set for clinical significance
- The 2024 study did suggest baclofen may work better for chronic hiccups (>48 hours duration) rather than acute cases 3
- Systematic reviews 4, 5 identify baclofen as having the best evidence among hiccup treatments, though they acknowledge the overall quality of data is limited
Titration for Refractory Cases
If the initial 30 mg/day dose fails after 5 days, the FDA-approved titration schedule for baclofen allows gradual increases 1:
- Start: 5 mg three times daily for 3 days
- Increase to: 10 mg three times daily for 3 days
- Then: 15 mg three times daily for 3 days
- Then: 20 mg three times daily for 3 days
- Maximum: 80 mg/day (20 mg four times daily)
Critical Safety Considerations
Monitor closely for these specific issues:
- Drowsiness and dizziness are the most common side effects 2, 3
- Renal impairment: Baclofen is primarily renally excreted; reduce dose in renal dysfunction 1
- Abrupt discontinuation: Must taper slowly to avoid withdrawal seizures and hallucinations 1
- Avoid in hepatic encephalopathy: Baclofen can worsen mental status 6
When Baclofen is Most Appropriate
Based on the evidence, baclofen appears most effective for:
- Persistent hiccups (lasting >48 hours) rather than acute episodes 3
- Stroke patients with hiccups (strongest RCT evidence) 2
- Patients who can tolerate potential sedation and have adequate renal function
The 10 mg three times daily regimen for 5 days represents a reasonable initial trial with acceptable safety profile and the best available evidence for efficacy 2, 5.