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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.
Below are some withdrawal symptoms that you may experience when withdrawing from Gabapentin. Keep in mind that you may not experience everything on the list â everyone will have a different experience. These are a list of symptoms based on what individuals have reported during their withdrawal process. 1  Anxiety: Some individuals report feelings of anxiety upon withdrawal. 2  Appetite changes: Some people may feel like not eating and will experience a noticeable loss of appetite when quitting Gabapentin.