Will gabapentin show up on a drug test for work as a bad drug?,such as narcotic?

Gabapentin is not an opiate. And there's no such thing as a "bad drug" only bad people when they abuse or obtain them illegally. If you have a prescription for medications, be sure to list them all when having the UA done. Most labs do not test for meds such as gabapentin unless specifically requested by the person ordering the test. If they do request it and it shows positive, they will wonder why this wasn't disclosed in the beginning. Unless the job you're applying for is considered a "safety sensitive" position, a company can not discriminate based on legitimately prescribed medications you need in order to lead a productive life.

Best wishes,
chris