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Workout recovery, Muscle protein support, Electrolyte replenishment
Active adults seeking convenient essential amino acids around workouts or those with lower protein intake who want daily muscle support.
Mix 1 scoop in 8–10 fl oz of water and shake well; take 2 servings per day, including during or after workouts. Taking with adequate water can improve tolerance during exercise.
Zero sugar; Phenylketonurics: Contains phenylalanine.
Leucine activates the mTOR pathway in muscle, which may signal muscle protein synthesis after exercise.
Caution: High amino acid intake on an empty stomach may cause stomach upset; take with water and assess tolerance.
Isoleucine is used by muscles for energy and contributes to muscle protein synthesis alongside leucine and valine.
Caution: Excess free-form amino acids may cause mild gastrointestinal discomfort in some people.
Valine is a branched-chain amino acid that participates in muscle protein building and can be oxidized for energy during exercise.
Caution: May cause nausea if taken in large amounts without adequate fluids.
Threonine is an essential amino acid used to build proteins and collagen, supporting normal protein turnover.
Caution: Balance with other essential amino acids matters because single amino acids in high amounts can compete for absorption.
Lysine is required for building proteins and helps maintain a positive nitrogen balance during periods of physical stress.
Caution: Those following restricted protein diets should account for total amino acid intake from all sources.
The branched-chain amino acids leucine, isoleucine, and valine influence muscle protein synthesis and provide usable energy during training, while threonine and lysine supply additional essential building blocks to complete protein assembly and support recovery.
Label Warning: For healthy adults 18 years and older only. Do not use if pregnant or nursing. Consult a licensed, qualified healthcare professional before use, especially if you take medication or have a medical condition. Stop use 2 weeks before surgery. Use only as directed.
Who should be cautious: People with phenylketonuria should avoid due to phenylalanine. Individuals using antidepressants such as SSRIs, SNRIs, or MAOIs should be cautious because the formula contains L-tryptophan, which may interact and increase serotonin-related risk. Those with kidney issues or on low-protein diets may want to discuss amino acid use with a clinician. If combining with medications that may interact with L-tryptophan, consult a healthcare provider before use.
Storage: Store in a cool, dry place.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Whey protein provides a complete amino acid profile, supporting muscle recovery and growth when combined with EAAs. This synergy may enhance workout results and overall protein intake.
AI generated. Not medical advice.
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The Official Recovery Brand of Champions.
Faster recovery is the key to better results. For over 15 years, XTEND® has been making the best recovery products in the world. Powered by essential amino acids, including branched-chain amino acids (BCAAs), XTEND® EAA drives both muscle recovery and growth so you can achieve your goals today and prepare for tomorrow. It is also a great support option for those consuming GLP-1 products helping with muscle retention and hydration.
When to Take XTEND® for Best Results:
^Per serving.
‡Based on IRI Total U.S. Multi-Outlet Data for cumulative USD retail sales, measured in RSP, from 2018-present.
As a dietary supplement, mix 1 serving in 8-10 fl. oz. of water (adjust for taste preference) and shake well. For best results, take 2 servings per day.
Citric acid, natural flavors, malic acid, acesulfame potassium, sucralose, silicon dioxide, turmeric extract (color), calcium silicate.
Phenylketonurics: Contains phenylalanine.
Made in the U.S.A. using strategically sourced foreign and domestic ingredients and components.
This product is only intended for healthy adults, 18 years of age or older. Do not use if pregnant or nursing. Consult with a licensed, qualified, healthcare professional before taking this or any dietary supplement product, especially if you are taking medication or have a medical condition. Discontinue 2 weeks prior to surgery. Use only as directed. Do not use if safety seal is broken or missing. Store in a cool, dry place. Keep out of reach of children.
Minimum fill line after settling. This product is sold by weight, not volume. The density of the powder varies, and significant settling of powder may occur during shipping and handling. This product contains the servings indicated when measured by weight.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||||
| Serving Size: 8.4 g (Approx. 1 Scoop) | ||||
| Servings Per Container: 40 | ||||
| Amount Per Serving | %Daily Value | Amount Per 2 Servings | %Daily Value | |
| Calories+ | 25 | 50 | ||
| Total Carbohydrate | <1 g | 0%* | 1 g | <1%* |
| Total Sugars | 0 g | 0 g | ||
| Includes 0 g Added Sugars | 0%* | 0%* | ||
| Sodium (as Pink Himalayan Sea Salt) | 150 mg | 7% | 300 mg | 13% |
| Potassium (as Potassium Chloride) | 120 mg | 3% | 240 mg | 5% |
| Xtend® EAA Amino Blend | 5 g | ** | 10 g | ** |
| L-Leucine | 1.5 g | 3 g | ||
| L-Isoleucine | 750 mg | 1.5 g | ||
| L-Valine | 750 mg | 1.5 g | ||
| L-Threonine | 750 mg | 1.5 g | ||
| L-Lysine Hydrochloride | 650 mg | 1.3 g | ||
| L-Arginine | 250 mg | 500 mg | ||
| L-Phenylalanine | 200 mg | 400 mg | ||
| L-Tryptophan | 100 mg | 200 mg | ||
| L-Histidine | 25 mg | 50 mg | ||
| L-Methionine | 25 mg | 50 mg | ||
| *Percent Daily Values (DV) based on a 2,000 calorie diet. **Daily Value not established. +Calories calculated by Atwater method (ie. 4 calories for carbohydrates, 4 calories for protein, 9 calories for fat.) in accordance with Federal food labeling regulations. Use of an alternatively acceptable method, as provided in the regulations for determining calorie content, may provide different results. | ||||
