Honestly take all 2 grams of the gabapentin. Empty stomach, with cola.
Taking more than 3-4 grams starts to lower the BA. A moderate dose for me (not to get fucked up just moderate in general... I use it correctly as well as incorrectly) 1,800mg. To get recreational I generally eat between 3-4 grams. I don't really get the chance to do it too often because once you get "high" on it
once, its hard to get that feeling again for a while. Pregabalin (Lyrica) on the other hand every time gets me good... eventually it didn't because I went through 180 in a couple days.
Lyrica and Neurontin actually go well together. And I do not know about rectal administration for lyrica, I imagine it would work. I tried snorting it too a few times, not sure if it worked or not because I ate some too. I'm taking it is water soluble though right?
Edit: and if you liked 450mg lyrica (I started first time at 600 it was great), you may or may not really feel the neurontin at 2 grams but I would take it all anyways. I believe (I'm too lazy to check right now) Lyrica is roughly 10 times as potent as neurontin so doing the math thats around 4,500mg Neurontin. I mean I have taken over the 4-5 gram dose where the BA starts to lower itself, I'm sure everyone is a little bit different. So if you can get your hands on more try taking 4 grams maybe...
Don't take it too much or you WILL get exlplosive shits. Thats what happened after I tried eating 10 grams... besides the fact I felt full as hell... damn horse pills they're fucking huuuuge. Just wanted to throw that in there.