USP Labs Modern BCAA (micronized) White Blue Raspberry - 15 oz is a supplement that contains a BCAA ratio formulation designed to activate mTOR. This refreshing supplement is ultra-micronized for easy mixing, and it has no artificial colors and no L-glutamine.

This supplement helps activate mTOR (mammalian target of rapamycin), which is a proline-directed serine-threonine protein kinase that controls many physiologic and metabolic functions in several types of cells. mTOR plays a role in hypertrophic growth (such as an increase in muscle cell size), protein synthesis, and tissue morphogenesis. Because of this function, many sports nutritionists have sought to find compounds that target the regulatory pathways of mTOR.

Multiple studies have shown that amino acids can directly regulate mTOR signaling pathways in skeletal muscle. This suggests that some amino acids could activate some of the cell signaling elements upstream from mTOR in the insulin/growth factor signaling pathway. This could unlock muscle-building potential.

Most supplements like this contain L-glutamine, but this supplement contains L-alanyl-L-glutamine, which is a glutamine dipeptide that is more stable and water soluble than standard L-glutamine. This is more effective than L-glutamine, and the presence of a unique intestinal transporter for this dipeptide can further increase its effectiveness by sending more of it into the bloodstream and skeletal muscle. Up to 65% of regular L-glutamine can be destroyed before it gets into your muscles, so this new dipeptide is a huge improvement over standard glutamine supplement formulas.