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  • Swanson Premium
  • Overall Rating: 4.8 out of 5  (84)
  • 500 mg 100 Caps
  • Retail $8.99
  • Swanson $4.99
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In Stock
500 mg 120 Caps
Gluten Free
  • Neurotransmitter Support

  • Pharmaceutical Grade (USP)

  • Supports Mental Alertness
L-Tyrosine is a non-essential amino acid that plays an important role in the production of neurotransmitters dopamine and norepinephrine. In addition, because L-Tyrosine is necessary for the synthesis of thyroid hormone and epinephrine (adrenaline), L-Tyrosine supports healthy glandular function and stress response.

Contains no sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.

Product Label

Supplement Facts

Serving Size 1 Capsule

  Amount Per Serving %Daily Value
L-Tyrosine 500 mg *

*Daily Value not established.

Other Ingredients: Gelatin (capsule), magnesium stearate (vegetable source) and stearic acid (vegetable source).

Suggested usage: As a dietary supplement, take 1 capsule 1 to 3 times daily, preferably between meals. Consider taking this product in combination with NOW Phenlalanine and Acetyl L-Carnitine.

CAUTION: Persons with thyroid disease (hyperthyroidism), melanoma, or those taking MAO inhibitors or other mood altering medications should seek the advice of a physician before consuming this product.

Contains no sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.

Terms and Ingredient Definitions

NOW Foods L-Tyrosine Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

L-Tyrosine 4.8 5 6 8
amino acid I was surprised that an MD suggested using the amino acid Tyrosine to build up the level of protein needed for health. So I ordered a supply and it has enhanced my health. My preference for capsules was also a reason why I choose this item as well as the reasonable cost. November 17, 2013
Noticed a Difference Right Away I noticed an improvement in almost everything about me withing a couple days. I had heard that this product affected dopamine and I can honestly say I'm positive it has triggered it or something. I'm also shocked in how quickly I noticed a difference. This is the first time of trying this supplement, but I can say, without question, I will not let it run out. June 7, 2013
Wonderful Product Love it! Not sure the whole scoop on what it's doing, but I sure feel good! March 2, 2013
Definite difference Stress levels are DOWN for sure. I had forgotten that I was taking these yet had been noticing that I was feeling far more calm, even when circumstances were not improving. I went into my cabinet to refill my vitamin caddy and remembered this little number! I hope it works for others as well as it is working for me! April 27, 2012
Good It works very well with Folic Acid. I've lost weight since I've been taking it. I take it before bed because it helps me sleep. April 12, 2012
Will buy again. I take tyrosine to assist my adrenal glands, and I do feel it works for that purpose. It's a great amino acid supplement for natural energy. I take one every morning, so this bottle lasts a long time. July 29, 2009
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Shipping Restrictions

Countries with restrictions on this product:

  • Japan

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