L-Tyrosine
Why this matters
- № 01Precursor to dopamine and norepinephrine for motivation and focus*
- № 02Supports cognitive performance under stress and sleep deprivation*
- № 03Supports thyroid hormone production*
4-hydroxyphenylalanine
A non-essential amino acid and precursor to dopamine, norepinephrine, and epinephrine — the catecholamine neurotransmitters that drive motivation, focus, and stress resilience.

4-hydroxyphenylalanineBotanical illustration
§ 1The molecules
Why this matters
*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
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