There are also quite a few herbs that are relaxants that act on
GABA, such as kava, valerian, hops, passionflower, skullcap, and a whole lot more.
Gabapentin is basically an artificial substance that in theory acts like GABA, which is the body's relaxant and also prevents seizures when it's working as it should. Taurine is the speudo-amino acid the body uses to manufacture GABA, but of course it does this in combination with B6, but you've got plenty of it.