There are other options, too.

Two that could really help are niacinamide and taurine.

Niacinamide is one form of vitamin B3. Do not confuse it with niacin (nicotinic acid). They are completely opposite in effect. NiacinAMIDE acts at the GABA receptor complex, and does two things there. It sensitizes the receptor, making your natural GABA work better. It also is a mild to moderate agonist, which means it activates the receptor, even in the absence of GABA.

Individual responsivity to niacinamide varies widely. Dose can range from 100-500 mg, and you can take it four times a day. Maximum daily dose is 2000 mg.

Taurine is an overlooked neurotransmitter/neuromodulator. Its activity is very similar to GABA. But unlike GABA, it readily crosses the blood/brain barrier.

Taurine directly antagonizes glutamate, an excitatory neurotransmitter that often suppresses GABA function.

Some people have amazing results with taurine.

You can take up to 2000 mg at a shot, as needed. Warning, though, too much can make you irritable, and make the positive effect fade away. Same goes with the niacinamide.

You should be able to get niacinamide at any drug store or health food shop. Just make sure of the -AMIDE suffix.

Taurine might be a little harder to find, but body-builders use it. So, find out where the gymrats buy their stuff, and you should find taurine.

Best,
Lar