"started gaba on 8-7-16. i take 900 mg daily (split my dosage.) remember, gaba is an off label used for anxiety &amp; you can&#039;t blame it if it doesn&#039;t work for anxiety (i find negative reviews for gaba unfair on this site.) i take prozac 40 mg; but i still have light anxiety, panicky feeling, nausea &amp; mental agitation. i have to use 4 or 5 mg valium prn to smooth out prozac can&#039;t fix at times. i suggested trying gaba w/ my psyche; he agreed. 300 mg first wk, 2nd wk 600, &amp; 3rd wk 900. gaba added has been effective for anxiety. i feel less anxious &amp; mental agitation reduced.at first, gaba will make you drowsy &amp; weak. my memory is slightly off but if i really focus i am fine.you might feel shaky at the start. some bad days, be vigorous. be positive"