Source Naturals, L-Tyrosine, 500 mg, 100 Tablets
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- Dietary Supplement
- Free Form
- Amino Acid
L-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a precursor for the neurotransmitters dopamine, norepinephrine, and epinephrine, for thyroid hormones, and for enkephalins, special peptides which subdue messages of physical discomfort. L-Tyrosine is also a precursor for the protective skin pigment melanin.
1 tablet daily.
Dibasic calcium phosphate, sorbitol, stearic acid, colloidal silicon dioxide, magnesium stearate, and modified cellulose gum.
Contains no yeast, dairy, gluten, egg, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
Contains tyrosine. Not to be used with MAO inhibitor drugs. If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.
|Serving Size: 1 Tablet|
|Amount Per Serving||%DV|
|†Daily Value not established.|
iHerb Customer Reviews
I've been suffering from depression for the last 10 years and this product helped me to laugh a bit. It gave me the energy that I lack for the whole of my life. Now it's easier to communicate to laugh and to do sport. I was so lethargic to do anything. But it contains wheat&gluten be carefull if you are allergic to those.
I started taking ADD medication as an adult (long story as to how I got to that point) but found that even the least powerful medication had bad side effects. 500mg or 1000mg of L-tyrosine is more effective for me and has less side effects.
Great with ALCAR
Posted by mozzer on Apr 08, 2016
Tyrosine is useful for energy by itself but I really liked when combined with 2-3 grams of ALCAR. Tyrosine gives you that energy boost and ALCAR helps focus and direct it.
Posted by -Peri- on Mar 15, 2016
I am hypothyroid and despite being on medication my concentration and energy levels are somewhere down the drain (in addition of being hypo I am single parent and university student which drains all my energy and then some)... But not anymore! I have used this product for a week and I can say I have noticed increase in energy and regaining my cognitive skills slowly despite being highly sceptical about this! :)
Posted by Reviewer2166233 on Dec 14, 2015
Feeling cold and unmotivated all the time, I thought I would give this a try, feeling something was off with my thyroid. It was a big mistake. The first couple days there was no effect at 1000 mg on an empty stomach. The third day I started feeling weird - really weird, like I was wired and high at the same time. Then I decided to go down to 500 mg. It got even worse - just a bad experience. I am getting off of it - I would rather be cold and tired. I should note I do drink caffeine and am by nature a tense person, so these may be factors. I would definitely not take this if you consume caffeine. All I know is now I have to wait to repair the issues this caused.
Posted by 5079616329957795945 on May 10, 2014
Good. Boost my concentration.
Good as far as I can tell
Posted by Reviewer2734169 on Apr 22, 2014
It is a bit hard for me to review this product because I am taking it in conjunction with a bunch of other things. I used to take ThyroFem for my low thyroid function but just decided to buy each individual ingredient in bulk instead. L-Tyrosine is just one of those ingredients. But like I said, it seems to be working ok.