Disclaimer: This scientific independent research is provided by Aisle7 and is for informational use only. GNC provides this information as a service but does not endorse it. Likewise, Aisle7 does not recommend or endorse any specific products.
I accept these terms-
Product Label
There is a label available for this product. To view the label, click this icon or navigate to the "Label" tab below.
-
ShopRunner
GNC L-Tyrosine 500
60 Vegetarian Caplets031712
Price: $9.99
Member Price: $7.99
Become a Member
Free Membership with $10 Purchase! Details
Buy One Get One 50% Off Site Wide! Add 2 to Cart for Discount! Details
AVAILABILITY: In stock, Ships in 1-2 full bus. days. Details
- Description
-
- Tyrosine is a non-essential amino acid that can be synthesized by the body.
- Amino acids are the building blocks of protein and help fuel skeletal muscles.*
- Each tablet contains 500 mg of free-form Tyrosine.
- Kosher and Vegetarian
- Supplement Facts
-
As a dietary supplement, take one tablet daily an hour before meals or on an empty stomach.
Other Ingredients: Cellulose, Acacia No Sugar, No Starch, No Artificial Color, No Artificial Flavors, No Preservatives, Sodium Free, No Wheat, No Gluten, No Corn, No Soy, No Dairy, Yeast Free Storage Instructions: Store in a cool dry place. Warning: Keep out of reach of children
Serving Size 1 Vegetarian Caplets Servings Per Container 60 Amount Per Serving % DV L-Tyrosine Alpha Ketoglutarate 500.00 mg ** ** Daily Value (DV) not established - Health Notes
-
L-Tyrosine
L-Tyrosine- Reliable and relatively consistent scientific data showing a substantial health benefit.
- Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
- For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.
Our proprietary "Star-Rating" system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
This supplement has been used in connection with the following health conditions:
Used for Amount Why Stress150 mg for every 2.2 lbs (1 kg) of body weight, split into two doses taken before stressful activitiy (take the second dose 40 to 90 minutes after the first) 
[3 stars] Occasionally taking this amino acid before a stressful activity may help maintain your mental capacity.DepressionConsult your doctor
[2 stars] Some people with depression have been found to improve with tyrosine.
PhenylketonuriaConsult a qualified healthcare practitioner [2 stars] Supplementing with L-Tyrosine may help prevent a deficiency caused by the PKU diet and improve behavoir.Alcohol Withdrawal
(Glutamine, Multivitamin, Phenylalanine, Tryptophan)Refer to label instructions 
[1 star] In double-blind research, alcoholics treated with L-tyrosine combined with DLPA (D,L-phenylalanine), L-glutamine, prescription L-tryptophan, plus a multivitamin had reduced withdrawal symptoms and decreased stress.
Parkinson's DiseaseRefer to label instructions [1 star] L-tyrosine is the direct precursor to L-dopa and therefore could be an alternative to L-dopa therapy, however, it should not be taken with L-dopa as it may interfere with L-dopa transport to the brain.L-tyrosine is a nonessential amino acid (protein building block) that the body synthesizes from phenylalanine, another amino acid. Tyrosine is important to the structure of almost all proteins in the body. It is also the precursor of several neurotransmitters, including L-dopa, dopamine, norepinephrine, and epinephrine.
Copyright 2013 Aisle7. All rights reserved. Aisle7.com
The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2014.
- Label
-
To view the Label you will need Adobe Acrobat Reader installed. You can download a free copy of the Adobe Acrobat Reader at: http://www.adobe.com/acrobat/readstep.html
- Ratings and Reviews
-
REVIEW SNAPSHOT®
by PowerReviewsPros
- Effective (6)
- Easy on stomach (3)
- Simple to take (3)
Cons
Best Uses
- Daily use (5)
- Men (3)
- Women (3)
- Reviewer Profile:
- Health conscious (5)
Reviewed by 7 customers
Sort by
Displaying reviews 1-7
Pros
- Easy on Stomach
- Effective
- No side effects
Cons
- Hard To Swallow
Best Uses
- Daily Use
- Men
- Women
Comments about GNC L-Tyrosine 500:
i take this product on a empty stomach for effectiveness. it has made a big diff, helped me with my weight lose. it was on the dr oz show,
Pros
- Effective
- Simple To Take
Cons
- Hard To Swallow
Best Uses
- Daily Use
Comments about GNC L-Tyrosine 500:
I have an adrenal deficiency, causing me to suffer from chronic fatigue. I've tried everything - B vitamins, medications, supplements, diet changes (even incorporating hard-to-find foods), cleanses - anything that I heard might help. The best combination I've found is 1500mg L-Tyrosine (which is not made, as far as I can find - I have to buy the 1000mg and the 500mg) 2x daily in conjunction with my medications. The GNC brands are the ones I have kept coming back to - their supplements seem to be high quality. Plus, they offer both the 1000mg and the 500mg. All others are 750mg, maximum.
Pros
- Easy on Stomach
- Effective
- Simple To Take
Cons
Best Uses
- Daily Use
- Men
- Women
Comments about GNC L-Tyrosine 500:
I use this because I work a lot of Overtime and don't get as much sleep as I would like. I feel better since I've been using it, as though I have more energy after running on less sleep.
Pros
- Effective
Cons
Best Uses
Comments about GNC L-Tyrosine 500:
I used this product in conjunction with others recommended to me by a GNC employee to regulate my thyroid and beat symptoms of depression. The last time I had my (previously hypo) thyroid tested, the results came back normal! No synthetic drugs for me!
Pros
- Immediate affect
Cons
Best Uses
- With empty stomach
Comments about GNC L-Tyrosine 500:
I researched for something to increase Dopamine and Serotonin levels. 5HTP and L-Tyrosine were recommended, as well as St John's Wort, L-DOPA and Kava Kava. Suggest to try half the 500mg tablet at first with empty stomach to see your tolerance level or reactions to the supplement. I tried the 500mg dosage with 5 HTP and St John's Wort. Kava Kava and L-DOPA are going to be my next on list to try...
Pros
- Easy on Stomach
- Easy To Swallow
- Effective
- Simple To Take
Cons
Best Uses
- Daily Use
- Men
- Older People
- Women
Comments about GNC L-Tyrosine 500:
I really don't get why you haven't listed this under aids for depression.. so many people benefit from using either this or it's precursor Phenylalanine. (L-Phenylalanine keeps me up at night so I found this easier on my sleep schedule) Anyway, great to take 500 mg 2x per day on an empty stomach (amino acids shouldn't be taken within an hour before or after protein of any kind).
Pros
- Easy To Use
- Effective
- Good Smell
- Good Value
- Lightweight
Cons
Best Uses
- Daily Use
Comments about GNC L-Tyrosine 500:
I have a low thyroid condition. The meds my doctor gives me are not enough. So I take 2 pills a day of this product. It gives me a low but long burst of energy so I can do things all day. My German Sheppard dog has Crushing disease. I give her one half a tablet everyday day. It has helped keep her alive and doing well. it also helps to keep our weight down. Wonderful to use.
- My Beauty Routine Takes:
- 10 Minutes
Displaying reviews 1-7
- Ask A Question
-
PEOPLE WHO BUY THIS ALSO BUY:
-
- Price: $18.99
-
- Price: $11.99
-
- Price: $19.99
