Click Here to Visit the Site: https://nuheals.com/how-long-does-gabapentin-stay-in-your-system/ Gabapentin pills usually stays in your system for about 1 to 2 days after the last dose. Its half-life is around 5 to 7 hours, meaning most of the drug is cleared from the body within 24–48 hours, though small traces may last slightly longer depending on dosage and kidney function.