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supplement called GABA. It's an acronym and it's not a drug and it has no side-effects.
GABA, gamma amino butyric acid, is an inhibitory neurotransmitter that acts as a clamp on brain impulses. The more that is in the brain, the slower the brain will act with a feeling of calmness as you stated. Alcohol and a lot of drugs stimulate GABA.
However, apparently, if you get too much of this stuff within the brain, your synapses will grind to a halt and apparently you will die.
Not to be alarmist of course.
I expect that manufacturers of supplemental GABA think that most of it will not even make it past the Blood brain barrier.....although apparently the BBB is not always perfect........
Your brains mileage may vary.
I tried GABA and felt no different at all.. typical eh? Then again, I tried suntheanine in massive dose with no difference as well....what a weirdo
I spent 25 mins looking for a suitable link and I did not want to grab a wiki link, as that's a bit unoriginal, even though wiki is my first port of call as its on my quick search.
I think its a reasonable article with some balanced comments.
http://www.healthvitaminsguide.com/aminoacids/gaba.htm
http://www.healthvitaminsguide.com/aminoacids/gaba.htm
(It's so good I linked it twice
er for those with dual displays)