Gamma-Butyrobetaine ethyl ester HCl

Because of this, it’s powers extend far beyond the sweat factor. Clinical trials show that GBB (and thus ProGBB) may be a formidable ingredient that certain dieters can benefit from — namely, those who aren’t eating enough meat, the elderly, or intensely training athletes. The most impressive claim from these studies is a near-doubling of plasma carnitine levels after supplementation. These studies also show a 300% increase in carnitine excretion with quite large doses,[1,2] which means the levels are absolutely getting increased in the system.
“sweat amplification” agent, as that’s the interesting effect of the supplement, but it’s the improved carnitine status that we feel bring the actual benefits.