L-Tyrosine
Neurotransmitter precursor for cognitive function and stress response.
Dose & timing
- 500 mg — daily
Why it appeared in the archived stack
Catecholamine precursor: tyrosine → L-DOPA → dopamine → norepinephrine → epinephrine. Acute-stress studies (cold, sleep deprivation, multi-tasking) show 1–2 g preserves cognitive performance; clinical PKU dosing is much higher. 500 mg is a maintenance dose.
Where to buy
| United States (Amazon.com) | Buy on Amazon.com ✓ direct ASIN mapped |
| United Kingdom (Amazon.co.uk) | Buy on Amazon.co.uk ✓ direct ASIN mapped |
| Germany (Amazon.de) | Buy on Amazon.de ✓ direct ASIN mapped |
| France (Amazon.fr) | Buy on Amazon.fr ✓ direct ASIN mapped |
| Spain (Amazon.es) | Buy on Amazon.es ✓ direct ASIN mapped |
| Italy (Amazon.it) | Buy on Amazon.it ✓ direct ASIN mapped |
| Poland (Allegro.pl) | Buy on Allegro — 20,14 zł |
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FAQ
Where can I buy L-Tyrosine?
L-Tyrosine is available on Amazon in the US, UK, Germany, France, Spain, Italy and Poland. This page links each marketplace directly — to a mapped product listing where one exists, otherwise to a targeted Amazon search built from the product, dose and brand hint. A mapped ASIN verifies only the link target, not purity, quality, stock or suitability.
What dose of L-Tyrosine appeared in the January 2024 protocol?
500 mg — daily.
Why did L-Tyrosine appear in the archived stack?
Catecholamine precursor: tyrosine → L-DOPA → dopamine → norepinephrine → epinephrine. Acute-stress studies (cold, sleep deprivation, multi-tasking) show 1–2 g preserves cognitive performance; clinical PKU dosing is much higher. 500 mg is a maintenance dose.