Still doubtful
I did a quick literature search using keyword phrasing, GABA AND growth hormone release in PubMed. Go to:
**broken link removed**
I found some small evidence for measurable, which does NOT mean signifcant for bodybuilding purposes, transient increases in GH when patients were put on the prescription drug, baclofen.
Balcofen is a GABA-B receptor agonist, meaning GABA-B receptors will respond to baclofen as well as GABA. This occurs in CNS neuron synaptic transmission.
I could find no studies in my brief review that used GABA to increase GH levels.
Ask the promotors of this product to cite their references when they claim that "studies show." If, in fact, there are studies to support the substances they sell, administered in the route and dosages they recommend, they should have no trouble providing these citations.