Veg Capsule
L-Tyrosine
Nervous System Support
$10.00
$0.33 a day · 30-day supply
Tyrosine is an amino acid that supports mood regulation, cognitive function under stress, and thyroid health.
In depth
About this supplement
What Is L-Tyrosine?
Tyrosine is an amino acid your body can make, but only out of another one, phenylalanine. That makes it conditionally essential: ordinarily you cover your own needs, and under load you may not. This is the free-form version, meaning single molecules rather than tyrosine locked inside a protein.
How It Works in the Body
Tyrosine is less a worker than a raw material. An enzyme adds a hydroxyl group to make L-DOPA, and from there the body builds dopamine, then norepinephrine, then epinephrine, the catecholamines that carry alertness and the stress response. The thyroid uses tyrosine as well, assembling thyroid hormone on a tyrosine backbone. Skin cells send the same molecule down a third path to make melanin.
What It Supports
- Catecholamine production: Is used by the body to build dopamine, norepinephrine and epinephrine.
- Normal thyroid function: Supports the thyroid's own hormone-building chemistry.
- Mental performance under load: Supports a steady mind when the day is demanding.
- Skin and hair pigment: Plays a role in making melanin, the pigment of skin, hair and eyes.
Who It May Suit
Shift workers, students and anyone whose days run long and mentally demanding. Plant-forward eaters may take an interest, since protein intake sets how much phenylalanine there is to convert. The capsule is plant cellulose and the stearic acid comes from vegetables, so it fits vegan and vegetarian patterns.
Good To Know
Free-form tyrosine needs no digestion before absorption, though it shares a transporter with the other large neutral amino acids, so a protein-heavy meal competes with it. Talk with your healthcare provider before use, especially if you take thyroid medication, levodopa, or a monoamine oxidase inhibitor.
At a glance
Allergens and certifications
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01
Kosher
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02
Halal
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03
Non-GMO
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04
Gluten free
FAQ
Common questions
What is L-tyrosine?
It is an amino acid, one of the twenty that build protein. Your body makes it from phenylalanine, an essential amino acid that has to come from food, so tyrosine itself is called conditionally essential. It is also the chemical starting point for several of the body's signaling molecules.
How does it work?
Think of it as a stem the body branches from. Hydroxylation turns tyrosine into L-DOPA, and L-DOPA becomes dopamine, then norepinephrine, then epinephrine. A separate branch adds iodine to tyrosine to assemble thyroid hormone. A third turns it into melanin. One molecule, three destinations.
What makes this form different?
This is free-form L-tyrosine at 500 mg per serving: loose molecules, not tyrosine bound inside a protein, so nothing has to be broken apart first. The capsule is hypromellose, a plant cellulose. Silicon dioxide and vegetable stearic acid are processing aids and nothing more.
Who is it for?
People with long, cognitively demanding days, whether that is night shifts, exams or back-to-back decisions. It works within vegan and vegetarian eating, since the capsule is plant cellulose and the stearic acid comes from vegetable sources. Anyone whose protein intake is modest may also find a free-form amino acid useful.
What should I know before taking it?
Talk with your healthcare provider before use if you take thyroid medication, levodopa for Parkinson's disease, or a monoamine oxidase inhibitor such as linezolid or selegiline. Tyrosine is the precursor those drugs work around, and combining them can push catecholamines too high. Mention it too if you are pregnant or nursing.
Ingredients
What is in it
Every ingredient, as listed on the label.
Supplement Facts
Serving Size 1 capsule
| Ingredient | Amount Per Serving | % DV |
|---|---|---|
| L-Tyrosine (Free-Form) | 500 mg | † |
† Daily Value not established.
Ingredients: Hypromellose (cellulose capsule), Silicon Dioxide, Stearic Acid (vegetable source).
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