That's what I thought you might have been doing.
I usually buy bulk, with Gaba I bought 1 kg about $32. (I do have several supplements I don't use much sitting around because of the "bulk" buy).
I had been taking a teaspoon of Gaba, measuring a teaspoon that is about 2 grams. Way higher than most anyone recommends.
I am cutting back, since taking too much GABA can have what doctors call a "paradoxical reaction" or paradoxical anxiety. Apparently a clinical dose of Gaba is 500 mg.
There is controversy over whether oral gaba crosses the blood brain barrier.
Leaving that aside, I know for sure GABA has a direct, measurable, obvious effect on me. Whether it's a central nervous effect or brain, no idea.
I get a facial flush feeling, my face does turn a little red, and in 10-15 min my blood pressure will come way down. At least 10 points, sometimes 20 points down. At first it was a little scary, so I didn't take GABA for a year, it sat around in the container. (Which does clump up over time due into cakes due to moisture).
Not sure if I only take 500 mg will I get the same reaction, likely I will, yesterday I tried 1/2 teaspoon, I guess a gram, same feeling.
So your dose was likely much less than 500 mg. And maybe not everyone reacts the same way, not sure which.
I guess with amino acids I tend to think they are mostly harmless but maybe I need to pay more attention to mega doses.
