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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 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. 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.


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.

Product Notes:

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