AMINO X – Effervescent Instantised Amino Acids Over the years, BSN has supplied the supplement world with a host of novel muscle-building products. In our undying quest to bring exciting and innovative products to the marketplace, we have developed the newest supplement breakthrough with BSNs highly anticipated entry into the branched-chain amino acid market with AMINOx – BSNs Effervescent, Instantised BCAA Endurance and Recovery Support Agent.