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Source Naturals, N-Acetyl L-Tyrosine, 300 mg, 120 Tablets

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Source Naturals, N-Acetyl L-Tyrosine, 300 mg, 120 Tablets

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Source Naturals, N-Acetyl L-Tyrosine, 300 mg, 120 Tablets

Out of Stock
  • Expiration Date: 03/2020
  • Shipping Weight:
    0.24 lbs
    Switch to Metric units
  • Product Code: SNS-00217
  • UPC Code: 021078002178
  • Package Quantity: 120 Tablets
  • Dimensions:
    3.5 x 2 x 2 in, 0.2 lbs
    Switch to Metric units
Product Overview


  • Dietary Supplement

N-Acetyl L-Tyrosine is a more rapidly absorbed and bioavailable form of the amino acid L-tyrosine, and is less prone to urinary excretion.

L-Tyrosine is converted in the body to key biologic compounds, including epinephrine, dopamine, L-dopa, CoQ10, thyroid hormones, and melanin. The B vitamins pyridoxine (B-6) and folic acid are provided to assist in the conversion process.

Suggested Use

1 tablet daily

Other Ingredients

Sorbitol, stearic acid, magnesium stearate, modified cellulose gum and colloidal silicon dioxide.

Contains no yeast, dairy, egg, gluten, 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
Vitamin B-6 (as pyridoxine HCl) 25 mg 1,250%
Folate (as folic acid) 400 mcg 100%
N-Acetyl L-Tyrosine 300 mg
†Daily Value not established
iHerb Customer Reviews

Not happy

Posted by danarm on Dec 01, 2012 | Verified Purchase

In theory this is a better version of l-thyrosine. In practice, it doesn't have the same energy, mood and motivation effects on me. I also don't like that the pills are sour and acidic. I will stick to the plain l-thyrosine that I know and love.

Thanks for your feedback!

Excellent Source of Tyrosine

Posted by iHerb Customer on Feb 26, 2012 | Verified Purchase

Best absorbtion of Tyrosine I have tried. Great absorbtion makes up for low mg.

Thanks for your feedback!

Great Supplemental Drug

Posted by iHerb Customer on Jul 04, 2010 | Verified Purchase

I love using this product as a way to adjust my dosage of L-Tyrosine intake. I use this product to supplement the medicine for my hypothyroid condition. The recommended dosage of one pill is not quite enough for my body's needs. I like adding it to my daily routine when I have a need for more than normal. - Dallasite

Thanks for your feedback!

Roger said

Posted by iHerb Customer on Mar 25, 2009 | Verified Purchase

Good stuff .. fast service

Thanks for your feedback!

b strange

Posted by iHerb Customer on Feb 10, 2009 | Verified Purchase

very good, gives my thyroid a boost

Thanks for your feedback!