L-Tyrosine and N-Acetyl L-Tyrosine (NALT) are two popular supplements often compared for their roles in supporting mental performance and resilience. Both serve as building blocks for key neurotransmitters like dopamine and norepinephrine, which influence focus, memory, and mood. While L-Tyrosine is the naturally occurring amino acid, NALT is a modified version designed for improved solubility and absorption. Understanding their differences can help you choose the right option for enhancing cognitive support during demanding tasks or periods of stress.