Dosing Adjustments for Gabapentin in Renal Impairment

Introduction to Dosing Recommendations

• The American College of Physicians recommends starting with 100-300 mg of gabapentin at bedtime or three times daily for patients with moderate renal impairment, and titrating slowly by increasing 100-300 mg every 1-7 days as tolerated 1
• The American Geriatrics Society suggests that failing to calculate creatinine clearance accurately in elderly or patients with altered muscle mass leads to inappropriate dosing 2

Cardiovascular Considerations

• The American Heart Association recommends that gabapentin and pregabalin are typically not recommended as first-line agents in patients with end-stage cardiovascular disease requiring palliative care, due to risks of fluid retention, weight gain, and heart failure exacerbation 3

Monitoring and Dose Adjustment

• The National Kidney Foundation recommends calculating creatinine clearance before initiating therapy and adjusting doses accordingly 4
• The American Academy of Neurology suggests monitoring closely for dose-dependent adverse effects during titration, particularly dizziness and sedation 1
• The National Kidney Foundation advises temporarily discontinuing gabapentin during acute illness that increases risk of acute kidney injury in patients with baseline CrCl <60 mL/min 4