It doesn't knock you out. To me it's like taking Tylenol PM or something. You can always go to good RX and put in medication and a whole list will come up. I do that if I get a new medication and want to see if there will be interaction with what I'm taking. It'll give you the good, the bad and the ugly so to speak but I don't consider there to be any bad, but everyone is different. I don't drink but that'll affect the way it works too. It might enhance it. When I recommended halfing the capsule that's really only to see if you can tell any difference in the way you feel. If, after about an hour, you feel the same then I'd take the rest. I really can't tell I took anything which is why a long time ago I started it and quit after about a week and told my doctor I couldn't tell any difference. He said no, start back taking it because it's doing its job. He said just because the medicine didn't affect me didn't mean it wasn't working. What mg is the gabapentin you have?