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Now Foods, L-Tyrosine, 500 mg, 120 Capsules

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In Stock
  • Expiration Date: May 2019
  • Shipping Weight: 0.3 lbs (0.14 kg)
  • Product Code: NOW-00162
  • UPC Code: 733739001627
  • Package Quantity: 120 Capsules
  • Dimensions: 4.4 x 2.4 x 2.4 in, 0.25 lbs (0.11 kg)
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Product Overview


  • Neurotransmitter Support
  • Pharmaceutical Grade (USP)
  • Supports Mental Alertness
  • Healthy Glandular Function
  • 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 capsule 1 to 3 times daily, preferably between meals. Consider taking this product in combination with NOW L-Phenylalanine and Acetyl L-Carnitine.

Other Ingredients

Gelatin (capsule), magnesium stearate (vegetable source) and stearic acid (vegetable source).

Contains no sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.

The L-Tyrosine used in this product is Pharmaceutical Grade (USP).


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.

Store in a cool, dry place.

Supplement Facts
Serving Size: 1 Capsule
  Amount Per Serving % Daily Value
L-Tyrosine 500 mg *
* Daily Value not established.
iHerb Customer Reviews
Excellent for Depression
I've been taking L-Tyrosine and 5-HTP for depression and anxiety for about three weeks now. The results have been absolutely amazing. This works *far* better than any prescription anti-depressant SSRI I've been prescribed. Not only has my depression and anxiety dissipated, I actually feel energetic and alive! I read about these in Dr. Priscilla Slagle's book "The Way Up From Down" and also in Julia Ross's "The Mood Cure". I've been following Slagle's basic program which involves a very high-quality Multi Vitamin Mineral (M.V.M.), a high-quality Co-Enzyme B Complex that contains the proper form of B6 (P-5-P), and an extra 50mg of B6 (Pyridoxal-5-Phosphate / P-5-P) with each dose of L-Tyrosine or 5-HTP. I also take Vitamin C. Here's what I take: L-Tyrosine 1500mg + P-5-P 50mg on an empty stomach upon first waking up. I wait an hour before breakfast so it absorbs properly. M.V.M., B-Complex, Vitamin C 1-2000mg with breakfast L-Tyrosine 1500mg + P-5-P 50mg mid-afternoon on an empty stomach. M.V.M., B-Complex, Vitamin C 1-2000mg with dinner 5-HTP 100-150mg + P-5-P 50mg before bed on an empty stomach (makes me sleepy) The 5-HTP increases serotonin, and the L-Tyrosine increases dopamine and norepinephrine. So unlike a typical SSRI like Prozac that only increases serotonin, this increases these three neurotransmitters that regulate mood. Highly recommended if you're suffering from depression/anxiety and nothing you've tried so far seems to completely work.
Dec 13, 2013

Good for ADHD

Posted by 5061974857132364953 on Aug 30, 2016

Since taking prescription amphetamines for ADHD, I found myself burnt out and exhausted from low dopamine. A tapering schedule and L-Tyrosine helped me to recover quicker than I have previously from taking this script and I feel so much more myself than I thought I could! This is also a great study tool as it helps me to focus without the speedy effect of the medication.

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Posted by Reviewer1284478 on Aug 07, 2016


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L Tyrosine is exactly what I need to be alive.

Posted by bobbienorthern on Jul 16, 2016

This tyrosine really works. I just received it three days ago and it worked on me the very first time I took it. It really has given me so much more energy and endurance just in a short three days. Everyone is different so each of us should work with it and figure out what is the best dosage for our selves. I have read every review in here on the tyrosine and it seems that it will affect each of us in a different way. I have really been in great need of this supplement and am so glad that I found it just by reading reviews of all the other supplements that I take. It helps to convert the T4 into the T3 so it seems to me it gives the thyroid a badly needed jump start for me. It has decreased my hunger and appetite also. My energy is really soaring like I used to me many years ago. I am 72 next month so for me to become so alive on this supplement it verifies how good it is. Give it a try as it may really help with energy, fatigue and endurance and also with reducing my hunger and appetite. This also helps with my asthma as I can now breath much much better. I can now use inhalers only once a day and sometimes skip a few days. It really does help tremendously with my energy levels and it also really helps keep my hunger and appetite under control. It's like a miracle for my breathing.

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Don't know what to expect, but the mood improved alot

Posted by 4712145402934902913 on Jul 05, 2016

Busy days, 2h commuting to work each way every day, 2 kids, 4 dogs and last but not least - a girlfriend. Those days have had an impact on my mood for the last 6 months. Being tired, not seeing the bright side of life. After 4 weeks with these babies things starts to look better. I'm up 5AM - 4 times a week, having a good workout before leaving for work. All stress that GF puts me through now gone since I'm not so tired and not in the mood for a real good lovers quarrel. I can't guarantee that Tyrosine is the reason behind all this, but it all went away after 4 weeks, without changing diet or taking new supplements. I guess I will keep on going using them. Good price at IHERB also, compared to local stored in my country.

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Great product for focus and dopamine production.

Posted by emirame on Jun 06, 2016

Highly recommended, but do not expect the results early; you need to wait for a few weeks to feel the benefits.

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