Gabapentin Safety in Heart Failure and Kidney Failure Patients

Introduction to Gabapentin Use

The American College of Cardiology and other guideline societies imply that gabapentin has no direct cardiac contraindications and does not affect cardiac conduction or function in patients with heart failure, with the primary concern being renal function rather than cardiac status 1
Gabapentin is safe to use in heart failure patients from a cardiac standpoint, with few drug interactions and no documented cardiac toxicity, according to the Mayo Clinic Proceedings 1

The National Kidney Foundation recommends starting with low doses and titrating cautiously to reduce dose-dependent dizziness and sedation in patients with renal impairment, with a dosing algorithm based on renal function 1
For patients with CrCl >60 mL/min, standard dosing is recommended (100-300 mg at bedtime or three times daily, titrate by 100-300 mg every 1-7 days as tolerated), according to the FDA labeling and clinical guidelines 1
For patients with CrCl 30-60 mL/min, the dose should be reduced by approximately 50%, as recommended by the European Renal Association 1

The American Heart Association recommends checking baseline renal function before initiation and monitoring closely during treatment, with rechecks 1-2 weeks after initiation and after each dose increase 1
The European Society of Cardiology advises avoiding NSAIDs in heart failure patients as they can worsen renal function and fluid retention, although this is not specific to gabapentin 2, 3