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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.
BUT, the question most people have is, âHow long does withdrawal last??!â Bear in mind, this can vary due to the type of opiate, how long it was taken and the personâs physical makeup. The most acute withdrawal symptoms will last 5-7 days, although some of the psychological symptoms (depression) can last a lot longer.