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Source Naturals, L-Tyrosine, 500 mg, 100 Tablets

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In Stock
  • Expiration Date: May 2020
  • Shipping Weight: 0.47 lbs (0.21 kg)
  • Product Code: SNS-00190
  • UPC Code: 021078001904
  • Package Quantity: 100 Tablets
  • Dimensions: 2.4 x 2.4 x 4.4 in, 0.4 lbs (0.18 kg)
Product Overview


  • 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.

Suggested Use

1 tablet daily.

Other Ingredients

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.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Calcium 114 mg 11%
L-Tyrosine 500 mg
†Daily Value not established.
iHerb Customer Reviews

Live it

Posted by 5423974890796153999 on Dec 01, 2016

Love Tyrosine i take 1500 MG morning an evening and really helps with fatigue

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Great stuff

Posted by 5477846004536266688 on Sep 26, 2016

It does its job. I take two capsules in the morning 30 mins before breakfast and two in the afternoon in between meals. It helps me to focus and it keeps me in a good mood.

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ok product

Posted by 5566470386920844704 on Sep 06, 2016

I have used this for months, 2 per day. works ok for me.

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Posted by Reviewer1284478 on Aug 07, 2016


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help for mental and thyroid problems in menopause

Posted by 4918506340705458074 on Aug 05, 2016

After antidepressants and neuropsihotic due to menopause this preparation I can say saved my life..I do not understand why menopausal women doctors do not submit to testing thyroid and adrenal glands, before they prescribe psychiatric drugs. I do not use drugs because I with tyrosine and b Complex fully resolved problem.I think that my problem was not at all related to serotonin already large deficit of dopamine and hormones thyroid.With thyrosine move slowly, the first day after half a tablet and later with one tablet .Thanks I Herb I feel reborn again

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