Can you stop gabapentin cold turkey?

No. Even though it is non-narcotic and really nontoxic your brains chemistry will be used to the drug. If you DO quit cold turkey instead of using a tapering program expect something like a really bad acid trip that lasts for one to three weeks. Dilated pupils, audio hallucinations, sweating, tremors.

Source: I quit cold turkey and only could make it to day 7. As far as I could tell after 7 days the withdrawal symptoms were not getting easier. It definitely made me question my sanity.