L-Tyrosineand Focus And Attention.
Evidence gradeB
ImpactModerate
Confidencemedium
Imported rating. This grade comes from SuppCo and has not been independently reviewed. It describes research, not a product, and it is not medical advice.
The rating
- Direction
- Favourable
- Rated by
- SuppCo
- Observed
- 28 September 2026
Studies behind it
Behavioral and cognitive effects of tyrosine intake in healthy human adultsAdrian Hase · Pharmacology Biochemistry and Behavior2015Tyrosine Improves Working Memory in a Multitasking EnvironmentJohn R. Thomas · Pharmacology Biochemistry and Behavior1999Food for Your Mind? The Effect of Tyrosine on Selective AttentionC. Frings · Journal of Cognitive Enhancement2019