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NOW - L-Tyrosine
NOW - L-Tyrosine

NOW - L-Tyrosine

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Info: Available in 60 or 120 Capsules

L-Tyrosine plays an important role as a precursor in the production of the catecholamine hormones such as epinephrine (also known as adrenaline), thyroid hormones, and several neurotransmitters including dopamine, which makes L-Tyrosine a crucial component in supporting vitality and mood. Some individuals equally use this amino acid for decreasing cognitive fatigue, as well as aiding the body cope with a variety of physically stressful situations, such as extended wakefulness, exposure to cold, and excessive noise.

Product Notes:

L-Tyrosine is a white, crystalline non-essential amino acid; its name was derived from the Greek word "tyros" meaning "cheese" as it was first isolated from the hydrolysis of casein, which is the main protein in cheese.


Each capsule contains: 500 mg L-Tyrosine

Non-medicinal ingredients: Capsule (gelatin, water), Magnesium Stearate (vegetable source) and Stearic Acid (vegetable source).

Suggested Usage:

Adults: Take 2 capsules 1 to 2 times daily, between meals. For occasional use. Store in a cool, dry place.


Consult a healthcare practitioner prior to use if you are pregnant or breastfeeding, or are following a low protein diet.

Health Canada Natural Product Number: 80004769.

Supporting Science:

- Deijen, JB. "Effect of Tyrosine on Cognitive Function and Blood Pressure Under Stress." Brain Research Bulletin. 1994; 33:319-23.
- Health Canada. L-Tyrosine Monograph (March 17, 2008).
- Mahoney CR, Castellani J, Kramer FM, Young A, Lieberman HR. "Tyrosine supplementation mitigates working memory decrements during cold exposure." Physiology and Behavior 2007;92(4):575-82.
- Neri DF, Wiegmann D, Stanny RR, et al. "The effects of tyrosine on cognitive performance during extended wakefulness." Aviat Space Environ Med 1995;66:313-9.

Product Options:
60 Capsules - $9.99 - UPC: 733739801609
120 Capsules - $17.99 - UPC: 733739801623