Naka Pro - L-Tyrosine - 140 veggie Capsule(s) - NPN: 80083833 -- Formulated by Naka, L- Tyrosine is an amino acid that assists muscle protein synthesis. Tyrosine is a great supplement to support exercise and building muscle, however it is also an important amino acid for cognitive health. Tyrosine supports mental alertness, memory and learning. Naka uses the active "L" form, which makes this supplement more bioavailable and easy to absorb