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This indicates that after youâve taken a gabapentin dose, approximately 50% will have been cleared from your system within 5 to 7 hours (on average). Using this information, we can determine that gabapentin will stay in your system for an estimated 1.15 to 1.60 days after your final dose. In other words, you shouldnât expect any of the gabapentin to remain in systemic circulation after 2 days (48 hours) post-ingestion.
Side effects of gabapentin may include dizziness. Withdrawal from gabapentin may cause chest pain. Most doctors will start their patients on a low dose of gabapentin to begin with to help manage pain levels. Abruptly discontinuing gabapentin may cause anxiety and chest pain.