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Thorne Research, L-Tyrosine, 90 Vegetarian Capsules


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Thorne Research, L-Tyrosine, 90 Vegetarian Capsules

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Thorne Research, L-Tyrosine, 90 Vegetarian Capsules

In Stock
  • Expiration Date: 07/2019
  • Shipping Weight:
    0.24 lbs
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  • Product Code: THR-51403
  • UPC Code: 693749514039
  • Package Quantity: 90 Veggie Caps
  • Dimensions:
    2.3 x 2.3 x 4.3 in, 0.2 lbs
    Switch to Metric units
Frequently Purchased Together
    Product Overview


    • Dietary Supplement
    • Hypo-Allergenic

    L-Tyrosine essential for neurotransmitter and thyroid hormone synthesis

    • important nutrient for healthy adrenal function
    • supports the thyroid gland
    • promotes a positive mental state and healthy stress management
    • contains no preservatives, magnesium stearate, or other lubricants and diluents

    Tyrosine is an amino acid precursor for synthesis of the neurotransmitters norepinephrine and dopamine. By improving the rate of neurotransmitter synthesis, tyrosine stimulates the central nervous system. It appears to function as an adaptogen by relieving physical symptoms of stress, such as mood swings. Chronically stressed individuals may not efficiently convert phenylalanine to tyrosine, making supplementation with tyrosine desirable.

    Tyrosine also serves as a precursor for the thyroid hormone thyroxine and melanin, the pigment responsible for skin and hair color and protection against harmful ultraviolet rays. In addition, tyrosine stimulates growth hormone and is involved in adrenal and pituitary function. Tyrosine is also a powerful antioxidant, scavenging and neutralizing free radicals and inhibiting fat oxidation

    Suggested Use

    Take 1 capsule three times daily or as recommended by your health-care practitioner

    Other Ingredients

    Hypromellose (derived from cellulose) capsule, leucine, silicon dioxide.


    Tamper Evident: Use only if bottle is sealed.

    Warning: If pregnant, nursing, or trying to conceive, consult your health-care practitioner before using this product.

    Store tightly sealed in a cool, dry place.

    Supplement Facts
    Serving Size: One Capsule
    Each Capsule Contains: Amount Per Serving % DV
    L-Tyrosine 500 mg *
    *Daily Value (DV) not established.
    iHerb Customer Reviews

    Didn't notice a benefit

    Posted by Rena61 on Jan 14, 2018 | Verified Purchase

    will not buy again.

    Thanks for your feedback!

    Effective product

    Posted by iHerb Customer on Nov 17, 2017 | Verified Purchase

    This was recommended for me by my doctor because of ongoing fatigue after numerous stressful events. I found it very effective in giving energy and wellbeing. It especially alleviated the feeling that I needed to keep eating for energy but the food did not help.

    Thanks for your feedback!

    Good Name

    Posted by iHerb Customer on Nov 05, 2017 | Verified Purchase

    Suggested use is 1 capsule a day. I take two since my brain does not make serotonin. I paid a bit more for the name and my brain.

    Thanks for your feedback!

    Great vegan product

    Posted by iHerb Customer on Oct 25, 2017 | Verified Purchase

    Can't live without my L-Tyrosine. I have tried many types, including powders, this one is the best. Easy to take, and no nasty fillers for me to worry about.

    Thanks for your feedback!


    Posted by iHerb Customer on May 24, 2017 | Verified Purchase

    I didn't want to buy it, but eventually i did. Not used very much.

    Thanks for your feedback!