With no opioid tolerance that makes that dose potentially risky in that it could be too sedating, esp. when combined with a benzo and gabapentin. That dose for anyone, also, increases risk of seizure by lowering the seizure threshold, but you have taken the clonazepam and gabapentin. I don't know your benzo tolerance or tolerance to gabapentin, but that would be TOO much altogether in combination if you had no tolerance to benzos or gabapentin. I would not suggest dosing that high on the tramadol again - lower doses can be satisfying when you use split-dose or re-dose techniques to get more o-desmethyltramadol metabolized by the liver. Even if you had opioid tolerance, that is just too much in that period IMO. Because you did re-dose as you did, that is a bit of a relief, as you did dose over 6 hours, but still TOO much to be safe. I would be worried about getting to sedated at this dose with no opioid tolerance + the GABAergics, but taking a stimulant is NOT a good idea on top of it all. Just monitor yourself carefully, I'd say. Tramadol and its metabolite have pretty long half-lives, and with the doses you took you could still be feeling it well into tomorrow. The tramadol's effect may peak even more because of the re-dosing you did, and the time it takes for metabolization of tramadol into o-desmethyltramadol to occur. So, don't think that you are necessarily on the come-down as far as the effects, you could be increasingly effected as time goes by, so again monitor yourself carefully, and I would adivse not to go to sleep.