L-Tyrosine (4-Hydroxyphenylalanine)

Category: amino acid

Group: Tyrosine

L-Tyrosine is a non-essential amino acid that serves as a precursor to several important neurotransmitters including dopamine, norepinephrine, and epinephrine. It plays a critical role in protein synthesis and supports cognitive function, mood regulation, and thyroid hormone production.

Also known as:

4-Hydroxyphenylalanine

UNII Code: 42HK56048U

Disclaimer: The information below is AI-generated analysis and should not be considered medical advice. Data may be incorrect, incomplete, or outdated. We are not responsible for the quality, accuracy, or reliability of this information. Always consult your healthcare provider before using any ingredients or products.

Uses

L-Tyrosine is used to enhance cognitive function, improve alertness and focus, support mood and stress response, and aid in thyroid hormone synthesis. It may also be included in formulations aimed at fat loss and metabolic support.

Common Uses:

Cognitive SupportStress ManagementThyroid SupportMetabolic Support

Side Effects

L-Tyrosine is generally well tolerated when taken at recommended doses. Some individuals may experience mild side effects such as headache, nausea, or gastrointestinal discomfort.

Common Side Effects:

HeadacheNauseaGastrointestinal discomfort

Rare Side Effects:

HeartburnFatigue

Precautions

Individuals with hyperthyroidism or those taking thyroid medications should avoid L-Tyrosine supplementation unless advised by a healthcare professional. Pregnant or nursing women should consult a physician before use.

Avoid if:

Pregnant womenNursing womenIndividuals with hyperthyroidism

Consult healthcare provider if:

Individuals taking thyroid medicationsIndividuals with medical conditionsPregnant or nursing women

Drug Interactions

L-Tyrosine may interact with thyroid hormone medications and MAO inhibitors. It is important to consult a healthcare provider before combining with these drugs.

Medications that may interact:

Thyroid hormone medicationsMonoamine oxidase inhibitors (MAOIs)

Dosing

Common supplemental dosages of L-Tyrosine range from 500 mg to 2000 mg per day, typically divided into one or two doses. In the referenced products, doses of 200 mg to 300 mg per serving are used, often taken twice daily.

Typical range:200mg - 2000mg

Times per day:1-2 times per day

Best taken:Best taken on an empty stomach or between meals for optimal absorption.