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Pure Encapsulations Essential Amino Acids - Muscle Recovery Support & Health* - with Leucine, Threonine & Tryptophan - 180 Capsules
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Purchase options and add-ons
Brand | Pure Encapsulations |
Flavor | Unflavored |
Unit Count | 180.0 Count |
Item Form | Capsule |
Item Weight | 6 Ounces |
Item dimensions L x W x H | 4 x 3.7 x 3.6 inches |
Product Benefits | Metabolism,Energy |
Age Range (Description) | Adult |
Package Information | Bottle |
Number of Items | 1 |
About this item
- Essential Amino Profile: Offers a full spectrum of essential amino acids including histidine, leucine, and tryptophan for muscle, brain, and tissue health*
- Muscle Recovery Support: Amino acids are the necessary building blocks to aid in muscle repair, metabolism, and muscle protein synthesis*
- Brain Health Supplement: Essential Aminos supports the production of neurotransmitters for overall brain and cognitive function*
- Suggested Use: As a dietary supplement, take 1 Essential Aminos capsule, 1-3 times daily, between meals
- Pure Difference: What we leave out matters, too; Pure Encapsulations products are FREE FROM common allergens, artificial or unnecessary ingredients, and GMOs
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Product Description




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.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease."
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.
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 4 x 3.7 x 3.6 inches; 6 ounces
- Item model number : EA21
- Date First Available : March 20, 2008
- Manufacturer : Pure Encapsulations
- ASIN : B074R3KVY8
- Best Sellers Rank: #6,319 in Health & Household (See Top 100 in Health & Household)
- Customer Reviews:
Compare with similar items
This Item ![]() Pure Encapsulations Essential Amino Acids - Muscle Recovery Support & Health* - with Leucine, Threonine & Tryptophan - 180 Capsules | Recommendations | |||||
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $52.60$52.60 | $44.95$44.95 | $19.99$19.99 | -5% $20.97$20.97 List: $21.97 | $35.91$35.91 | $53.20$53.20 |
Price Per Unit | $0.29 / Count | $0.30 / Count | $0.07 / Count | $0.06 / Count | $0.17 / Count | $0.18 / Count |
Delivery | Get it as soon as Thursday, Apr 24 | Get it as soon as Monday, May 5 | Get it as soon as Thursday, Apr 24 | Get it as soon as Thursday, Apr 24 | Get it as soon as Thursday, Apr 24 | Get it as soon as Thursday, Apr 24 |
Customer Ratings | ||||||
Sold By | Pattern. | BodyHealth LLC | Bayland Health | BulkSupplements | Nature's Path Nutraceuticals | OptimalAmino® |
keyword type | branched-chain-amino-acids-nutritional-supplements | branched-chain-amino-acids-nutritional-supplements | branched-chain-amino-acids-nutritional-supplements | branched-chain-amino-acids-nutritional-supplements | branched-chain-amino-acids-nutritional-supplements | branched-chain-amino-acids-nutritional-supplements |
form | Capsule | Tablet | Capsule | Capsule | Tablet | Tablet |
flavor | Unflavored | Unflavored/Natural | ✗ | Unflavored | Unflavored | — |
size | 180 Count (Pack of 1) | 30 Servings (Pack of 1) | 300 Count (Pack of 1) | 360 Count (Pack of 1) | 1 Count (Pack of 210) | 150 Count (Pack of 2) |
age range | Adult | Adult | Adult | Adult | Adult | Adult |
product benefit | Metabolism,Energy | Muscle Growth, Energy Management, Metabolism Management, Supports Electrolyte Balance | Muscle Therapy | Muscle Recovery, Mood Health | Muscle Growth | — |
serving suggestion | 1 capsule per serving | 5 Tablets | — | Two Capsules | — | Two Tablets |
Videos
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Honest Review after using 6 monthsJosh’s Prime Picks
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Why These Are The The Supplements I Prefer To UseJoe Capone
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About Pure EncapsulationsPattern.
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 - Essential Aminos
Ingredients
Each serving size (1 capsule) contains: L-Histidine (free-form) 50 mg, L-Isoleucine (free-form) 79 mg, L-Leucine (free-form) 138 mg, L-Lysine HCl (free-form) 110 mg, L-Methionine (free-form) 70 mg, L-Phenylalanine (free-form) 115 mg, L-Threonine (free-form) 68 mg, L-Valine (free-form) 75 mg, Tryptopure L-Tryptophan 20 mg. Other ingredients: vegetarian capsule (cellulose, water), ascorbyl palmitate.
Directions
As a dietary supplement, take 1 capsule, 1-3 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.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find this amino acid supplement to be of high quality, with one noting it contains l-threonine. The supplement helps with muscle building, with one customer reporting faster recovery after workouts, and they appreciate its good size capsules and lack of taste. Customers find it easy to swallow and effective, with one mentioning it's the easiest way to supplement amino acids.
AI-generated from the text of customer reviews
Customers find this amino acid supplement to be of high quality.
"...Quality product." Read more
"Love the purity of this company’s supplements." Read more
"Fairly good quality compared to most. But once again overpriced." Read more
"High quality" Read more
Customers appreciate the amino acid content of this supplement, with one customer specifically noting its inclusion of l-threonine.
"...I love how this product contains l-threonine, l-trytpophan, and l-lysine...." Read more
"I like the aminos concentration and variety in this product. However, after a few days of starting taking them I started to feel really bad...." Read more
"...They are exactly as they should be. It is so hard to find a good vitamin without a bunch of unnecessary ingredients." Read more
"...These are free-form and have very acceptable other ingredients. Will purchase again." Read more
Customers find the amino acid supplement helpful for muscle building and report feeling better after taking it. One customer mentions that their muscles recover faster after workouts, while another notes improved sleep quality.
"Helps with muscle building, especially if you're getting older." Read more
"...Great for sensitive stomachs, no after taste. Gluten, filler and preservative free." Read more
"...while and notice an improvement in my skin and that my muscles recover quicker after workouts. These work for me and I am happy with the product." Read more
"...I feel good all day and my workouts are improving too." Read more
Customers find the amino acid supplement easy to assimilate, with one noting it gets into the system much faster and another mentioning it's the easiest way to supplement.
"One of the easiest way to supplement amino acids, good size capsules. Great for sensitive stomachs, no after taste...." Read more
"This pure encapsulate is easy for me to assimilate. I have tried tablets of Tryptophan and was very disappointed with tablets...." Read more
"...-packed like most over-the-counter vitamins and as such get into your system much faster...." Read more
"Very easy and convenient way to add EAA' s to your diet. These are free-form and have very acceptable other ingredients. Will purchase again." Read more
Customers find the supplement easy to swallow.
"...They are fairly easy to swallow and my doctor recommended this particular brand. No complaints" Read more
"This brand was recommended by my Doctor. Easy to swallow capsules. Have had results." Read more
"...They are also easy to swallow." Read more
"Easy to swallow and works better than other brands..." Read more
Customers like the size of these amino acid capsules.
"...I also enjoy how this supplement is 1 capsule a day service size and lasts 6 months. Quality product." Read more
"One of the easiest way to supplement amino acids, good size capsules. Great for sensitive stomachs, no after taste...." Read more
"These are nice sized capsules, I bought a different brand, they were tablets, harder to swallow and missing one of the aminos that Pure E had in..." Read more
Customers like that the supplement has no taste.
"...Great for sensitive stomachs, no after taste. Gluten, filler and preservative free." Read more
"I like that there is no taste and no caffeine." Read more
"I feel so much better - Lots of energy and less appetite." Read more
Reviews with images

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Top reviews from the United States
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- Reviewed in the United States on February 16, 2025Size: 180 Count (Pack of 1)Verified PurchaseI purchased Pure Encapsulations Essential Amino Acids because the blend of amino acids in this supplement seem to be unique and necessary. For personal reasons, I was searching for a blend that was free from l-arginine and l-glutamine. I love how this product contains l-threonine, l-trytpophan, and l-lysine. I also enjoy how this supplement is 1 capsule a day service size and lasts 6 months. Quality product.
- Reviewed in the United States on April 10, 2025Size: 180 Count (Pack of 1)Verified PurchaseLove the purity of this company’s supplements.
- Reviewed in the United States on February 4, 2025Size: 180 Count (Pack of 1)Verified PurchaseIt's hard to rate supplements because the results are so subtle sometimes. This one I can say that I do notice a mild improvement each time I take it- I'm very tuned into my body and each time I take it I just feel like something is more "right" and in balance. My acupuncturist recommended me take aminos because he noticed an imbalance, and also because I don't eat meat or eggs. I feel like this fills in whatever void in my body from my diet.
- Reviewed in the United States on April 8, 2024Size: 180 Count (Pack of 1)Verified PurchaseHelps with muscle building, especially if you're getting older.
- Reviewed in the United States on July 30, 2024Size: 180 Count (Pack of 1)Verified PurchaseWe have found that free-form amino acids work for our love life, when non-free-form aminos do not. My husband is 81 and he takes several morning supplements that give us an active love life. These Pure Aminos are an important component. We have found that Cialis® does not work without supporting nutrients. We do not take scary herbs, just nutritional supplements.
- Reviewed in the United States on May 27, 2013One of the easiest way to supplement amino acids, good size capsules. Great for sensitive stomachs, no after taste. Gluten, filler and preservative free.
- Reviewed in the United States on November 3, 2024Size: 180 Count (Pack of 1)Verified PurchaseProducts was as described
- Reviewed in the United States on September 6, 2024Size: 180 Count (Pack of 1)Verified PurchaseIt works, I feel difference .
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.