Posted by M H
Most focus ingredients promise to make you sharper all the time. L-tyrosine is more specific, and more honest: it helps most when you are under pressure. That's exactly when you need it in a hard training session.
What is L-tyrosine?
L-tyrosine is an amino acid found in protein foods like chicken, dairy and soy. Your body uses it to make dopamine, noradrenaline and adrenaline, the chemical messengers behind drive, alertness and your stress response. When you are stressed, sleep-deprived or grinding through a tough workout, those messengers get used up faster. Tyrosine helps keep the supply topped up.
What the research shows
Performance under stress
Some of the earliest research came from the U.S. Army, which tested tyrosine on people exposed to cold and low oxygen. The tyrosine group reported less fatigue, distress and muscle discomfort, and performed better on mental tasks than the placebo group.1
Working memory
A study of 21 military cadets during a demanding training course found that those taking tyrosine performed better on memory and tracking tasks than cadets on a placebo.2
Self-control and reaction
In a lab study, a single dose of tyrosine improved people's ability to stop a response on cue, a measure of impulse control and reaction quality.3
The common thread: tyrosine doesn't do much when you are well rested and relaxed. It helps you hold your performance when stress, fatigue or effort would normally drag it down.
How much do you need?
Studies commonly use 500 mg to 2 g taken 30 to 60 minutes before the demanding task, with some going higher based on body weight. It is generally well tolerated in healthy adults.
Where you'll find L-tyrosine at VNDL
- VANDAL Pre-Workout: 1 g per scoop (2 g in a full dose), paired with choline and lemon balm for clean, steady focus without the tingle.
- VIPER Fat Burner: 3 g per scoop, to help you stay sharp while you're dieting.
The bottom line
If your workouts happen after a long day, on short sleep or during a cut, L-tyrosine is one of the best-supported ways to keep your head in the game.
This article is for education only and is not medical advice. If you are pregnant, nursing, taking medication or managing a health condition, talk to your doctor before starting any supplement.
References
- Banderet LE, Lieberman HR. Treatment with tyrosine, a neurotransmitter precursor, reduces environmental stress in humans. Brain Res Bull. 1989;22(4):759-762.
- Deijen JB, et al. Tyrosine improves cognitive performance and reduces blood pressure in cadets after one week of a combat training course. Brain Res Bull. 1999;48(2):203-209.
- Colzato LS, et al. Eating to stop: tyrosine supplementation enhances inhibitory control but not response execution. Neuropsychologia. 2014;62:398-402.
