What it is
L-Tyrosine is a non-essential amino acid that the body converts to L-DOPA, then dopamine, norepinephrine, and epinephrine. It also feeds thyroid-hormone synthesis.
Supplement · Amino Acid & Stress Support
L-Tyrosine
Tyrosine
500–2000 mg · vegan · gluten-free · 60 caps
brain-foginsomnia brainadrenal glandthyroid gland
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How it works
Under acute stress the brain depletes catecholamine pools faster than it can replenish them. Supplemental tyrosine restocks the precursor pool so dopamine and norepinephrine synthesis keeps up — preserving working memory and reaction time.
Who should take it
Shift workers, students under exam stress, cold-weather field workers, anyone facing sleep loss while still needing cognition. Less useful at baseline rest.
Avoid / careful
Hyperthyroidism, MAOI users, and anyone on levodopa for Parkinson’s (transport competition).
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
Can L-Tyrosine improve focus for everyone?
L-Tyrosine is most effective when cognitive function is challenged by acute stress, sleep loss, or cold. Its benefits at baseline rest are less pronounced.
What is the typical dosage for L-Tyrosine?
A common dosage range is 500 mg to 2000 mg per day, best utilized during periods requiring enhanced cognitive performance under duress.
Are there any significant interactions with L-Tyrosine?
Yes, L-Tyrosine should be avoided by individuals with hyperthyroidism, those on MAO inhibitors, and patients taking levodopa for Parkinson's disease due to potential interactions.
Research summary
A plain-English read of the literature behind this supplement. Not a clinical recommendation.
Military trials in cold, sleep deprivation, and altitude show preserved working memory at 100–150 mg/kg doses. Resting-state cognitive benefits are minimal.
From the blog
Editorial notes
SacredBod's longer take on L-Tyrosine — context the structured blocks above don't capture.
L-Tyrosine is a amino acid & stress support supplement. L-Tyrosine is a non-essential amino acid that the body converts to L-DOPA, then dopamine, norepinephrine, and epinephrine. It also feeds thyroid-hormone synthesis.
How it works
Under acute stress the brain depletes catecholamine pools faster than it can replenish them. Supplemental tyrosine restocks the precursor pool so dopamine and norepinephrine synthesis keeps up — preserving working memory and reaction time.
Who it’s for
Shift workers, students under exam stress, cold-weather field workers, anyone facing sleep loss while still needing cognition. Less useful at baseline rest.
Dosage & timing
- Typical dose: 500–2000 mg
- Best time: morning
- With food: empty-stomach
- Expected onset: Acute effect within 60 min on cognitive tasks under stress.
India context
Availability on Amazon India is currently limited or import-only for this form. International brands (iHerb, NOW Foods, Doctor’s Best) ship to India with variable customs handling. Local Ayurvedic equivalents may offer overlapping benefits.
Safety
Hyperthyroidism, MAOI users, and anyone on levodopa for Parkinson’s (transport competition).
Added to your stack.