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Natural Factors L-Tyrosine 500 mg 120 Vegetarian Capsules - Decreases Mental Fatigue, Stress Support - Proudly Canadian

4.6 out of 5 stars 17 ratings
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Purchase options and add-ons

Brand Natural Factors
Flavour Unflavored
Primary supplement type L-Tyrosine
Unit count 120.0 Count
Item form Capsule
Age range (description) Adult
Number of Items 1
Colour White
Allergen information Dairy Free, Soy Free, Gluten Free, Wheat Free, Shellfish Free, Non-GMO, Fish Free, Tree Nut Free, Egg Free, Corn-Free See more
UPC 627765027969

About this item

  • PRODUCTION OF NEUROTRANSMITTERS FOR STRESS RELIEF: L-tyrosine is a non-essential amino acid important in the production of neurotransmitters such as dopamine, epinephrine, and norepinephrine - required for managing stress.
  • DECREASES COGNITIVE FATIGUE: Natural Factors L-Tyrosine is a free-form amino acid that helps decrease cognitive fatigue resulting from physically stressful situations, such as extended wakefulness, exposure to cold, and excessive noise.
  • THIRD PARTY TESTING - ISURA VERIFIED CLEAN: The ISURA seal is your assurance that this product is independently verified as clean and safe, and has been tested for up to 800 possible contaminants. This product is ISURA verified clean, one of the highest testing standards in the world.
  • VEGAN, NON-GMO, GLUTEN FREE, FORUMULATED & PACKAGED IN B.C.
  • NATURAL PRODUCT NUMBER (NPN): 80033283
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Natural Factors L-Tyrosine 500 mg 120 Vegetarian Capsules - Decreases Mental Fatigue, Stress Support - Proudly Canadian
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Important information

Ingredients

Medicinal Ingredients: Each vegetarian capsule contains: L-tyrosine 500 mg. Non-medicinal Ingredients: Vegetarian capsule (carbohydrate gum [cellulose], purified water), dibasic calcium phosphate dihydrate, vegetable grade magnesium stearate (lubricant), silica.

Legal Disclaimer

Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product.

Product Description

Natural Factors NAC 600mg
Natural Factors L-Lysine 1000mg
Natural Factors L-Tyrosine 500 mg
Natural Factors L-Glutamine 1000 mg
Natural Factors L-Arginine 1000 mg
Natural Factors L-Tryptophan 220 mg
Customer Reviews
4.6 out of 5 stars 830
4.4 out of 5 stars 66
4.6 out of 5 stars 17
4.4 out of 5 stars 13
4.4 out of 5 stars 30
4.4 out of 5 stars 33
Size 180 Veg Caps 120 Tabs 120 Veg Caps 60 Veg Caps 180 Tabs 90 Veg Caps
Benefits Scavenges Free Radicals & Reduces Oxidative Stress. Aids in Respiratory Health. Helps Reduce the Recurrence, Severity, & Healing Time of Cold Sores Helps Decrease Cognitive Fatigue Resulting from Physically Stressful Situations Enhances Muscle Tissue Repair After Exercise Helps Support Healthy Heart Function Assists in the Building of Lean Muscle Mass when Combined with Regular Resistance Training
Key Ingredients NAC (N-Acetyl-L-Cysteine) L-Lysine (hydrochloride) L-Tyrosine L-Glutamine L-Arginine (hydrochloride) L-Tryptophan
Potency 600 mg 1000 mg 500 mg 1000 mg 1000 mg 220 mg
Gluten Free, Vegetarian, Non-GMO ✓ ✓ ✓ ✓ ✓ ✓
No Artificial Colours, Preservatives or Sweeteners ✓ ✓ ✓ ✓ ✓ ✓
Third Party Tested (ISURA) ✓ ✓ ✓ ✓ ✓ ✓
Canadian ✓ ✓ ✓ ✓ ✓ ✓

Product information

Technical Details

Manufacturer ‎Natural Factors
Place of Business ‎NATURAL FACTORS Coquitlam, B.C. V3K 6Y2
Parcel Dimensions ‎11.6 x 6.5 x 6.3 cm; 110 g
ASIN ‎B0DTZ7TNLG

Additional Information

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Natural Factors L-Tyrosine 500 mg 120 Vegetarian Capsules - Decreases Mental Fatigue, Stress Support - Proudly Canadian

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Product details

  • Parcel Dimensions ‏ : ‎ 11.6 x 6.5 x 6.3 cm; 110 g
  • Date First Available ‏ : ‎ Jan. 24 2025
  • Manufacturer ‏ : ‎ Natural Factors
  • Place of Business ‏ : ‎ NATURAL FACTORS Coquitlam, B.C. V3K 6Y2
  • ASIN ‏ : ‎ B0DTZ7TNLG
  • Country of origin ‏ : ‎ Canada
  • Customer Reviews:
    4.6 out of 5 stars 17 ratings

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Customer reviews

4.6 out of 5 stars
17 global ratings

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Boost in mental endurance
5 out of 5 stars
Boost in mental endurance
I've tried so many products from Natural Factors before and haven't had any major issues and so far the same with this L Tyrosine. It apparently helps decrease cognitive fatigue and it does seem like I have more mental capacity during the day. The only down side is the recommended dose is 2 caps, 3 times per day which is a hassle. I have not been taking full dose but I still think it has been helping me. The capsules are large but still ok to swallow with water. There's no taste and no after taste. The bottle has a convenient flip cap for easy access. If you sniff at the open bottle there is a slight sour smell but nothing noticeable for each capsule. There's no requirement to refrigerate after opening. The expiry is over 3 years away. At full dose, the entire bottle is a 20 day supply. Would I recommend it? Its worth a shot if you deal with cognitive fatigue during the work day.
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Top reviews from Canada

  • 鶹 Customer
    5.0 out of 5 stars Received the order very quickly
    Reviewed in Canada on July 6, 2025
    Verified Purchase
    I received everything within 24 hours. Everything is fine but of course it’s too early to say if I see a difference with the capsules. Usually everything I order from natural factors is very good, so looking forward to results in the future.
    Helpful
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  • John
    5.0 out of 5 stars Happy customer
    Reviewed in Canada on July 7, 2025
    Verified Purchase
    Decently priced and more convenient than hunting between stores in town here because it’s not widely carried, around here anyways. Arrived quickly
    Helpful
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  • Madame Sally
    5.0 out of 5 stars Parfait
    Reviewed in Canada on July 11, 2025
    Verified Purchase
    Excellente marque , donne energie mentale et physique
    Helpful
     Report
  • Nancy Anderson-Dolan
    5.0 out of 5 stars More energy and focus.
    Reviewed in Canada on May 3, 2025
    Verified Purchase
    Excellent product and a very good price. 2 a day giving me better and focus and energy all afternoon
    Helpful
     Report
  • Rachelle
    5.0 out of 5 stars Helps focus
    Reviewed in Canada on April 22, 2025
    Verified Purchase
    Helps my adhd teens focus on schoolwork.
    Helpful
     Report
  • PHenry
    1.0 out of 5 stars Disappointing results, none
    Reviewed in Canada on May 14, 2025
    Verified Purchase
    ZERO health impacts and ZERO benefits exhibited. Very disappointing.
    Helpful
     Report
  • Jasmine
    5.0 out of 5 stars It Makes Me Feel "Better".
    Reviewed in Canada on April 11, 2025
    鶹 Vine Customer Review of Free Product( What's this? )
    This has been a good addition to my morning supplements. I'm always looking for something to help me focus better and have recently added L-Tyrosine and Lions Mane.

    Unlike some of my other supplements, this is something that my body already makes so I feel safe taking it.
    Since I don't take any prescription medications I knew there weren't any interactions I should be aware of.

    It can be hard to tell exactlly what a new supplement is doing but I can say that I feel "better" since I started taking these on a consistent basis two weeks ago.

    One thing it's supposed to help with is mental fatigue due to stress so I ordered it with that in mind and I believe it's making a difference for me.

    I also appreciate that this is a product that's been third party tested by isura. I like knowing that I am getting what the label says but without any contaminants. That isura logo is my proof!

    This is an easy to swallow capsule that doesn't have any weird smells. It doesn't upset my digestion.

    The value is there for me for this supplement as it is making me feel better, even though "better" is hard to quantify.
    I'll keep using this.
    2 people found this helpful
    Helpful
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  • Vlad D
    5.0 out of 5 stars L-Tyrosine
    Reviewed in Canada on May 7, 2025
    鶹 Vine Customer Review of Free Product( What's this? )
    L-Tyrosine may be helpful in athletic performance and help enhance brain power and reduce stress. It is an amino acid which may help build proteins, enzymes and may help produce thyroid hormones. I have noticed the inclusion of this supplement in nootropic (brain health) blends. I will try this for a period of time and if I feel it is helping will continue with it.
    Helpful
     Report

Disclaimer:While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read and follow labels, warnings, and directions before using or consuming a product. This product may not be right for you. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. 鶹.ca assumes no liability for inaccuracies or misstatements about products.