Nutricost L-Tyrosine Capsules

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  • 180 Capsules of L-Tyrosine Per bottle
  • 500mg of L-Tyrosine Per Capsule
  • High-Quality L-Tyrosine
  • Non-GMO, Gluten-Free
  • Manufactured In a GMP Compliant, FDA Registered Facility


Nutricost L-Tyrosine - Formulated To Be The Best

L-Tyrosine, in addition to minerals like selenium and iodine, is essential for the production of the thyroid hormone thyroxine. 

Thyroxine is secreted by the thyroid gland - found in the throat - into the bloodstream, where it regulates many aspects of metabolism and energy production. Without sufficient tyrosine, you may experience fatigue, poor concentration, constipation, dry skin, weight gain, low mood, and sensitivity to cold*. 

Tyrosine's role in the body includes*: 

  • Forming neurotransmitters
  • Producing thyroid hormones
  • Regulating the stress response
  • Boosting focus and clarity
  • Improving motivation and mood
  • Supporting metabolism and energy

The lids on most Nutricost products are gradually changing from the original white lids to a new blue lid. During this transition, you may receive a product with either.

Q & A

Does this convert from L-dopa to dopamine? 

  • It essentially assists in stimulating more dopamine production in the brain.

Can this be taken at night before going to sleep? 

  • L-Tyrosine may be taken before bedtime. 

Does this need to be refrigerated? 

  • No, Nutricost L-Tyrosine is shelf-stable and does not need to be refrigerated. Store in a cool, dry place.

Anything else I should know? 

  • As a dietary supplement, take 1 capsule, preferably between meals.



*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.


    Customer Reviews

    Based on 176 reviews
    Jury's still out

    I go to the gym at 8a every morning. I usually have a 40 min intense workout. Today I tried this product for the first time on an empty stomach (recommended) at 6a. I seemed to have a burst of energy as I drank my coffee. By the time I got to the gym 2 hrs later, I was struggling to work out. It's now 9:30am and I'm in bed feeling like I need to take a nap. Opposite effect on me unfortunately'

    kellie feeback
    Love these

    First day I was out the gate running and have not looked back

    Good product

    I liked this product it really helped me focus and gave me the energy at work.

    Doesn’t work

    Save your money the product has no effect at all

    Ashley Faas
    Didn’t work

    It did nothing for me



    In the unlikely event that you’re not completely satisfied with ANY Nutricost™ product, we don’t want to keep your money. Even though our products are of the utmost quality, no supplement works for everyone. Contact us and we’ll refund 100% of your purchase price (minus S&H).

    Have questions about our products? Want to leave a comment about our service? Simply fill out the form below and one of our customer service representatives will contact you shortly.

    If you wish to speak with a representative of the Company feel free to call (866-438-3694) or send us an email at with any and all questions or concerns related to our products and services


    Our goal is to have your order processed within 1-2 business days depending on production of items ordered, size of order, and availability. Once Shipped, usually takes 3-5 business days for shipment to be received. (International orders may take longer due to customs).We try to get your order shipped as fast as possible while still upholding to our standard of quality.

    Due to certain circumstances out of our control shipping times may vary.



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