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Now Foods, L-Tyrosine, 100% Pure Powder, 4 oz (113 g)

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In Stock
  • Expiration Date: Jun 2019
  • Shipping Weight: 0.41 lbs (0.19 kg)
  • Product Code: NOW-00265
  • UPC Code: 733739002655
  • Package Quantity: 4 oz (113 g)
  • Dimensions: 2.625 x 2.625 x 4.75 in, 0.35 lbs (0.16 kg)
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Save $4.00 when you purchase these items today for only $19.05
Total: $23.05
Combo Discount: - $4.00
Together: $19.05

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Product Overview


  • Neurotransmitter Support
  • Pharmaceutical Grade
  • Healthy Glandular Function
  • Supports Mental Alertness
  • GMP Quality Assured
  • A Dietary Supplement

L-Tyrosine is a non-essential amino acid that plays an important role in the production of neurotransmitters dopamine and norepinephrine. In addition, because L-Tyrosine is necessary for the synthesis of thyroid hormone and epinephrine (adrenaline), L-Tyrosine supports healthy glandular function and stress response.

Suggested Use

As a dietary supplement, take 1/4 teaspoon in juice or water, preferably between meals, 1 to 3 times daily. Consider taking these other NOW products: L-Phenylalanine and Acetyl L-Carnitine.

Other Ingredients


Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Now L-Tyrosine is Pharmaceutical Grade.


Store in a cool, dry place After opening.

This product is sold by weight not volume.

Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Persons with thyroid disease (hyperthyroidism), melanoma, or those taking MAO inhibitors or other mood altering medications should seek the advice of a physician before consuming this product. Keep out of reach of children.

Supplement Facts
Serving Size: 1/4 Teaspoon (400 mg)
Servings Per Container: about 283
  Amount Per Serving % Daily Value
L-Tyrosine 400 mg *
* Daily Value not established.
iHerb Customer Reviews


Posted by 4736144836676868177 on Oct 12, 2016

Great price and great quality - will purchase again.

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L-Tyrosine helps me keep my mood stable

Posted by 5635842774601669088 on Sep 13, 2016

I have been using L-tyrosine for several years and find it very effective for helping me manage my tendency towards low moods. It is also slightly stimulating for me which is good as I am low energy and hypothyroid. Can disrupt my sleep if I take it too late in the day. Does reduce coffee cravings too. I have previously used the Cabot Health version of this powder but had trouble getting it this time around. The Now version also works for me but I won't buy it again as it is unpleasantly gritty and this is putting me off taking it.

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ADD control

Posted by Reviewer1367567 on Sep 07, 2016

I have used L-tyrosine for years. It helps me control my ADD. It is a pre-cursor to dopamine and get the neurons in the brain firing on all cylinders. It keeps me calm. Wonderful product. My mum uses it for her thyroid.

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Posted by 5250492302786285777 on Aug 04, 2016

Great addition to pre-workout supplement, a little bit gritty to mix though.

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This stuff works!

Posted by 4618342011442944455 on May 03, 2016

I noticed results within 5 days or starting this product and have been able to cut out coffee completely. I also wake up earlier with more energy and feel like it is benefiting my journey to gaining healthy body weight. For the price this product is amazing.

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