Gabapentin-Induced Speech Impairment

Neurological Adverse Effects

• The American Geriatrics Society recommends using gabapentinoids with caution in older adults due to CNS-active drug effects, which can impair speech production 2
• Dizziness (19%), somnolence (14%), and gait disturbance (9%) are common adverse effects of gabapentin that can impair coordination and cognitive clarity needed for normal speech 1
• Older adults are at particular risk for voice and swallowing problems, with 29% of elderly adults experiencing dysphonia (voice disorders) 3, 4, 5

Clinical Recommendations

• The American Academy of Otolaryngology-Head and Neck Surgery suggests monitoring closely for speech changes, including slurred or dysarthric speech patterns, reduced speech fluency, and changes in voice quality or volume 4, 5
• Praxis Medical Insights recommends starting gabapentin at 100-300 mg at bedtime in elderly patients, mandatory renal function assessment before initiation, and using the lowest effective dose to control pain 1
• The American Geriatrics Society advises avoiding doses >2,400 mg/day, especially in older adults, and being vigilant for early signs of altered mental status or coordination problems 2

Risk Mitigation Strategies

• The American Geriatrics Society recommends evaluating drug interactions with other CNS-active medications if speech problems develop 2
• Praxis Medical Insights suggests considering dose reduction or gradual discontinuation if speech problems develop, and assessing renal function to rule out drug accumulation 1