L-Tyrosine
L-Tyrosine is an amino acid that is naturally produced in the body from another amino acid called phenylalanine. It helps the body produce enzymes, thyroid hormones, and melanin, as well as helps with communication between nerve cells.
Here are some benefits of L-Tyrosine:
- Improves cognitive function: L-Tyrosine can help prevent declined cognitive function under stressful, cognitively demanding conditions.
- Boosts physical and mental performance: Depending on the dose, L-Tyrosine may help boost physical and mental performance.
- May help in stressful situations: Research is looking at whether L-Tyrosine can help improve one’s mental performance when in a stressful situation.
However, not all research is conclusive, and there may be side effects. Some studies have failed to observe positive effects on cognition. Here are some potential side effects of L-Tyrosine:
- Interactions with certain medications: L-Tyrosine supplements may cause interactions with certain medications like thyroid hormone.
- May worsen mental health in some cases: Research says it may worsen mental health in some cases.
The recommended dosage of L-Tyrosine varies depending on the purpose of use. Studies in humans showing most anti-stress promise for acute supplemental L-Tyrosine use a dosage range of 100–150 mg/kg of bodyweight which can be taken 60 minutes prior to stressor exposure. However, doses of L-tyrosine in some studies ranged up to 20 g, many times the normal daily dietary intake. It is best to consult a healthcare professional before taking any supplements.
Sources:
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1863555/
- https://www.healthline.com/nutrition/tyrosine
- https://examine.com/supplements/l-tyrosine/
- https://supplements.selfdecode.com/blog/tyrosine-6-proven-health-benefits-tyrosine/
- https://www.webmd.com/vitamins/ai/ingredientmono-1037/tyrosine
- https://health.clevelandclinic.org/l-tyrosine/
