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Pure Encapsulations L-Tyrosine | Amino Acid Supplement for Sleep, Thyroid Support and Memory* | 90 Capsules

4.5 4.5 out of 5 stars 836 ratings

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About this item

  • Cognitive Support: l-Tyrosine promotes production of various neurotransmitters that support cognitive function.*
  • Occasional Stress Support: l-Tyrosine plays a role in promoting healthy neurotransmitter function in response to stress.*
  • Thyroid Support: Tyrosine is a key component in the synthesis of thyroid hormones.*
  • Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity.
  • Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

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Product Description

Pure Encapsulations - everything you need
a
L-Tyrosine

Pure Encapsulations - Heart

Medical Professional

Sustainable Goodness

The Truest Quality

What makes us different is the promise of goodness that goes into every one of our supplements. We take high standards seriously, which is why we're the #1 most recommended professional supplement brand, ranked highest in quality and trust.^

^Among professional supplement brands surveyed, Nutrition Business Journal 2016, 2020, 2023.

Good from Start to Finish

When developing our products, we work in close collaboration with leading medical professionals and nutritional experts to create premium dietary supplements that you can feel good about. Our high-quality ingredients are backed by science with many of our formulations being included in more than 50 product-specific clinical studies in leading peer-reviewed journals.

Goodness at our Core

Pure Encapsulations was built with the purest of hearts and a plan to improve the wellness and wellbeing of others. This heartfelt commitment now extends to the planet as we move forward in sustainability initiatives and continue to support incredible organizations dedicated to leading the charge for a greener future. That’s why we’ve partnered with Terracycle to help reduce our environmental footprint and ensure our packaging is nationally recyclable.

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 4.6 x 2.5 x 2.5 inches; 0.01 ounces
  • Department ‏ : ‎ unisex-adult
  • Date First Available ‏ : ‎ March 22, 2008
  • Manufacturer ‏ : ‎ Pure Encapsulations
  • ASIN ‏ : ‎ B0064QN3NU
  • Customer Reviews:
    4.5 4.5 out of 5 stars 836 ratings

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Pure Encapsulations L-Tyrosine | Amino Acid Supplement for Sleep, Thyroid Support and Memory* | 90 Capsules
Pure Encapsulations L-Tyrosine | Amino Acid Supplement for Sleep, Thyroid Support and Memory* | 90 Capsules
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Price$32.00-15% $13.48
List:$15.86
$13.95$39.95$9.99-15% $19.99
List:$23.52
Price Per Unit$0.36 / Count$0.07 / Count$0.08 / Count$0.67 / Count$0.05 / Count$0.07 / Count
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it Apr 4 - 5
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Customer Ratings
Flavor
3.8
4.1
4.3
Easy to swallow
3.7
4.3
4.4
Value for money
3.0
4.5
4.3
Sold By
Pattern.
Carlyle
eSupplements
Faber Goods
Axio Supply
Carlyle
keyword type
multiple-vitamin-mineral-combinations
multiple-vitamin-mineral-combinations
multiple-vitamin-mineral-combinations
multiple-vitamin-mineral-combinations
multiple-vitamin-mineral-combinations
multiple-vitamin-mineral-combinations
form
Capsule
Capsule
Capsule
Capsule
Capsule
Capsule
flavor
Flavorlessflavorless|flavorless
Rice
Unflavored
size
90 Count (Pack of 1)
180 Count (Pack of 1)
180 Count (Pack of 1)
60 Count (Pack of 1)
200 Count (Pack of 1)
300 Count (Pack of 1)
weight
0.01 ounces
0.27 pounds
10.24 ounces
age range
All Ages
Adult
Adult
Adult
serving suggestion
1 capsule
1 capsule with water
Two Capsules
2 capsules

Important information

Safety Information

If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.

Indications

Pure Encapsulations - l-Tyrosine 90's

Ingredients

Each serving size (1 vegetarian capsule) contains: L-tyrosine (free-form) 500 mg. Other ingredients: Vegetarian capsule (cellulose, water).

Directions

As a dietary supplement, take 1 capsule, 1-4 times daily, between meals.

Legal Disclaimer

*These statements have not been evaluated by the Food & Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Please contact your healthcare professional immediately if you experience any unwanted side effects. The information contained herein is for informational purposes only and does not establish a doctor-patient relationship. Please be sure to consult your physician before taking this or any other product. †All Pure Encapsulations ingredients, including those derived from corn, are GMO free. We obtain statements from each of our suppliers certifying that the ingredients do not contain GMOs. For some nutrients, we conduct PCR testing to confirm the absence of genetically modified material.

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
836 global ratings

Customers say

Customers like the quality, clarity, and energy of the nutritional supplement. They mention that it helps improve focus and memory. They also say it gives them an energy boost. That said, some complain about the safety seal being broken or missing. Opinions are mixed on the effect on mental clarity.

AI-generated from the text of customer reviews

21 customers mention21 positive0 negative

Customers are satisfied with the quality of the nutritional supplement. They mention it's a high-quality product, works well, and is pure. Some say that the strength is above other brands and that it has helped tremendously.

"...PURE delivers every time the high quality...." Read more

"I just started taking this and it’s amazing. It gives you an energy boost but not like an over caffeinated nervous type of energy...." Read more

"...yet if this supplement deserves the credit, but I was more productive than usual today. I was more motivated and focused. My mood was better as well...." Read more

"...company has a great history and because I can personally say the product just WORKS!!!..." Read more

5 customers mention5 positive0 negative

Customers say the nutritional supplement helps with clarity and focus. They say it helps improve focus and memory. Customers also mention that the supplement snaps back into place and has stayed.

"...And yes, it does help you focus which is great because there’s nothing worse than not completing a task...." Read more

"...Within two days of starting this product, my focus snapped back into place and has stayed." Read more

"This supplement really does help improve focus and memory. I order 1 90 count every 3 months." Read more

"Great product. Really helps to curb my appetite and helps with clarity and focus." Read more

5 customers mention5 positive0 negative

Customers find the energy from the nutritional supplement to be great. They say it gives them a ton of energy and more stamina. Customers also say the 500mg of the supplement is plenty for the full day.

"I just started taking this and it’s amazing. It gives you an energy boost but not like an over caffeinated nervous type of energy...." Read more

"First, I felt great. I feel like I have a ton of energy after taking these and more stamina...." Read more

"...And so convenient. I find that 500 mg (one capsule) is plenty for the full day. I take it after breakfast with my other morning supplements...." Read more

"I use this product to help alleviate my anxiety and give me a boost of energy. I pulse it and only take it when I'm overly tired...." Read more

13 customers mention6 positive7 negative

Customers are mixed about the effect of the nutritional supplement on mental clarity. Some mention that their energy and mood have improved, it helps alleviate anxiety, and they are more motivated and focused. However, others say that it gave them a headache and made them lethargic.

"...I was more motivated and focused. My mood was better as well. Not huge changes, but I felt better today than I have in months." Read more

"Even taking one capsule very early in the morning causes nausea during the day and you don’t want to sleep at all in the night, like drinking a ton..." Read more

"I use this product to help alleviate my anxiety and give me a boost of energy. I pulse it and only take it when I'm overly tired...." Read more

"...It has been rough. Both of us feel nauseous in the morning after taking regardless if we take it with food or not...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the hole in the protection seal of the nutritional supplement. They mention that the safety seal was broken and the bottle was half empty.

"This bottle does not have the outer seal I am used to in supplements. They do not allow refunds...." Read more

"...that ive purchased within the same week that has a puncture hole through the protection seal. Manufacture defect or something else shady going on...?" Read more

"Bottle came opened , safety seal was broken and bottle was half empty." Read more

They work- but check with your doctor!!
5 Stars
They work- but check with your doctor!!
First, I felt great. I feel like I have a ton of energy after taking these and more stamina.But I have to say I did it without doctor or dietician advice and my TSH (free T4 reflex) blood test looks like I have hyperthyroidism!Check with doctor or dietician! Don’t just buy and use without knowing what you are doing to your system. It’s not a free ride, even if you have healthy kidneys.
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Top reviews from the United States

Reviewed in the United States on June 5, 2022
29 people found this helpful
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Reviewed in the United States on March 26, 2021
18 people found this helpful
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Reviewed in the United States on April 3, 2022
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5.0 out of 5 stars They work- but check with your doctor!!
Reviewed in the United States on April 3, 2022
First, I felt great. I feel like I have a ton of energy after taking these and more stamina.

But I have to say I did it without doctor or dietician advice and my TSH (free T4 reflex) blood test looks like I have hyperthyroidism!

Check with doctor or dietician! Don’t just buy and use without knowing what you are doing to your system. It’s not a free ride, even if you have healthy kidneys.
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Customer image
34 people found this helpful
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Reviewed in the United States on August 31, 2020
56 people found this helpful
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Reviewed in the United States on May 16, 2018
67 people found this helpful
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Reviewed in the United States on February 20, 2018
68 people found this helpful
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Reviewed in the United States on November 26, 2019
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5.0 out of 5 stars for energy
Reviewed in the United States on November 26, 2019
I started taking Tyrosine because my TSH number was a bit higher. Tyrosine is an amino acid (part of protein). I started taking it an hour before breakfast, the same way you are supposed to take thyroid medication. I had so much energy, that I decided to tone it down a little, and take my tyrosine after eating breakfast. I was taking bulk powder, but that involved measuring, and trying to make sure I was getting exactly the right amount for a dose. Then I found this Pure Encapsulations tyrosine -- it is pure tyrosine, without fillers, cellulose, etc. And so convenient. I find that 500 mg (one capsule) is plenty for the full day. I take it after breakfast with my other morning supplements. Thank you Pure! and thank you Amazon for such fast shipping!
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43 people found this helpful
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Reviewed in the United States on November 25, 2021
3 people found this helpful
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Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.