GABA might almost be considered "GHB-lite," and as such, a lot of trainers take it for similar reasons - including boosting hGH output.
There’s been some debate over the effectiveness of using either substance for said reason.
Shenendoah University conducted a randomized, double-blind study on the stimulatory effects of GABA on ifGH & irGH secretion.
The study indicated an elevation in resting levels of both, with peak concentrations increased by nearly 400%.
There’s plenty of anecdotal evidence that also suggests GABA is an effective sleep aid, but many users report experiencing undesirable vivid dreams.