Messed about with this recently recreationally, as I had spares.
Start of the month it took 3000mg, with my prescribed benzos. Just felt like I'd taken a lot more diazepam really, with some visual distortion. Very chatty.
A month later, tried again, this time had to go up to 10000mg for an effect, with my prescribed benzos. This was slightly weird, I was forgetting stuff, doing things 3 or for times, and was just generally out of it. Really not very enjoyable, my tolerance had obviously not come down that much in 4 weeks. Visual distortions more prominent, had to read with one eye like I often need to on Ketamine and opoiates. Reminiscent of that ket RC MXE... Just felt confused and kind of lost in my own house. Didn't enjoy..
I used 1000mg to potentiate 600mg of codeine (also with my prescribed benzos). It didn't do that much really, in the way of positives, but that's subjective. Just felt the nod a lot more with less of the euphoria. Was kind of bored near the end of the peak almost, as with the euphoria being less, my thoughts were quite static.
Drank wine with 6000mg, felt effects noticeably more, but not in a pleasant way. I felt annoyed and a bit confused, and often felt sick. Continued to drink beer after effects had worn off, and felt ok. I guess that's kind of good if you can't afford to buy much booze and have Gabapentin lying about?! But I wouldn't recommend it, especially from a harm reduction standpoint. Not as bad as benzos or opiates with booze I thought though, but I try to avoid drinking on nah those, except my prescribed benzos.
Also used 900mg for a coke comedown, the coke being imported from the continent and very clean (yellowy/brown stuff). I fell asleep 15 minutes after taking my nightly mirtazapine, with the gabapentin taken an hour prior to that. Doubt it did anything for sleep, as hardly any drugs make me drowsy enough to sleep if my body can fight it now. Fucking benzos! Taper is going well though still, thank god.
In short, good if you want to potentiate benzos especially if you have a small benzo tolerance, as unlike me you can up your benzo dose, for more effects. That was the equivalent feeling of me taking about 70 to 120mg of Diaz, or a large Xanax dose. Was talking a lot and very happy. With my tolerance that was insane, not felt a benzo type feeling like that one in over a year. That was with 6000mg of GABA and 20mg diazepam. Although I doubt the two drugs will synergies in the same way again like that. I also don't recommend you take similar doses if you are unsure. I was fine, and went out shopping quite happy, you could end up very unstable and slurring. Waking up with bruises, or even in hospital. Don't risk it, you can always take more, never less. Unless you know your own limits then do as you please.
Good for some opiate users I guess, who want to be more sedated. Unsure of it as a comedown drug, although lots swear by it. Due to my tolerance I would have to take a large number of benzos for say an amphetamine comedown, in combination this may help. Although I can't see myself on a meth comedown anytime soon haha.
This can be a bit weird if you take it medicinally and drink or do recreational drugs, so watch out for that. Nice with weed thlugh!