L-tyrosine is a naturally occurring amino acid used by the brain to make stimulatory neurotransmitters that improve memory, mood, focus, libido, coping ability, and sense of well-being. L-tyrosine supplementation leaves people feeling refreshed after training or manual labor by mitigating some of the short-term stress caused by intensive work.*
NOTE: N-acetyl-L-tyrosine is a more water-soluble form of the amino acid L-tyrosine* Spike Shooter®, Spike® Hardcore Energy, and Spike® Double Shot formulas contain N-acetyl-L-tyrosine. Power Drive® powder contains L-tyrosine.