Natural Factors L-Tyrosine 500 mg

60 Vegetarian Capsules
by Natural Factors
Product ID: NF2803
Expiration: November 2019
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Natural Factors L-Tyrosine 


L-tyrosine is an amino acid required for protein synthesis, and is a precursor for several important compounds, including thyroxin, melanin, and the neurotransmitters dopamine and norepinephrine. Dopamine and norepinephrine are important hormones and central nervous system transmitters that help maintain mood, attention and focus, and cognition. By increasing dopamine and norepinephrine at the cellular level, tyrosine may help maintain neurological health and improve mood, cognition, attention, and memory.

Tyrosine is a potent antioxidant and appears to act as an adaptogen during conditions of physical and mental stress, as shown by its ability to normalize blood pressure, alleviate fatigue, and improve cognitive function, attention, psychomotor skills, and memory. These effects may be due to tyrosine’s ability to affect brain chemicals and promote positive changes in brain pathways.

Tyrosine helps alleviate some of the effects of stress. Studies in humans show supplementation with tyrosine improves various aspects of cognitive function and physical symptoms of fatigue during exposure to physical stressors such as cold, high altitude, and extended wakefulness. Improvements are thought to be due to balancing brain chemicals and improving cognitive function.


    • Effective support for people who frequently experience physically stressful situations
    • Alleviates both the mental and physical effects of stress, enhancing mood and attention while combatting fatigue and other physiological responses to stress
    • Free form amino acids are easier for the body to utilize
    • Naturally occurring nutrient, free from toxic effects

Directions: Take 2 capsules 3 times daily or as recommended by a health care practitioner. For occasional use only. 

Supplement Facts
Serving size 1 capsule
Servings Size :60
Servings Amount/Serving %DV
L-Tyrosine  500 mg **
* Daily Value not established.
Other Ingredients :Vegetarian capsule(carbohydrate gum [cellulose],purified
water),dibasic calcium phosphate dihydrate, vegetable grade magnesium stearate(lubricant),silica.
Take 2 capsules 3 times daily or as recommended by a health care practitioner. For occasional use only.

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Customer Reviews

Based on 3 reviews
Good product

good for brain health

neurotransmitter support and unexpected thyroid support too

i started taking this for neurotransmitter support as i take a SRNI medication and this really helps make a big difference, along with tryptophan i take this daily. another unexpected but good side effect i never thought about but realized was that i suspected i was low thyroid as i had issues but as i've been taking this those issues have cleared up so good bonus :D

Thyroid support

Helps me think more clearly when I get brain fog due to hypo thyroid.