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Workout recovery, Muscle protein synthesis, Active lifestyle support, Hydration and electrolytes
Active adults with frequent training sessions or those with low dietary protein at certain meals seeking convenient amino acid support.
Mix 1 serving in 8–10 fl oz of water and shake well; take 2 servings per day, ideally during or after workouts or on rest days as desired. Amino acid drinks are often well tolerated during training; adjust water to taste.
Phenylketonurics: Contains phenylalanine.
Leucine activates the mTOR pathway, which may signal muscle protein synthesis after exercise.
Caution: High amino acid loads on an empty stomach may cause stomach discomfort; take with water and assess tolerance.
Isoleucine is used by muscles for energy and contributes to muscle protein synthesis.
Caution: May affect blood sugar responses during training; consider monitoring carbohydrate intake around workouts.
Valine serves as a branched-chain amino acid that can be used for energy in muscle and supports protein building.
Caution: Excess free-form amino acids can cause nausea in some people; start with one serving to gauge tolerance.
Lysine provides an essential building block for proteins and supports collagen and carnitine formation.
Caution: May cause gastrointestinal upset in sensitive individuals; taking with food or a shake may help.
Threonine is an essential amino acid used to build proteins, including structural proteins like collagen and elastin.
Caution: Large doses of single amino acids may compete with others for absorption; follow labeled serving sizes.
The branched-chain amino acids leucine, isoleucine, and valine supply direct substrates and signaling for muscle protein building during and after training. Lysine and threonine round out the essential amino acid profile to support complete protein synthesis, complementing BCAA-driven signaling with the materials needed for tissue repair.
Label Warning: For healthy adults 18 years and older only. Do not use if pregnant or nursing. Consult a licensed 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 or who need to limit phenylalanine. Individuals sensitive to sodium or potassium. Those using serotonergic medications such as SSRIs, SNRIs, or MAOIs due to the presence of L-tryptophan may wish to discuss with a healthcare provider. If combining with medications that may interact, a healthcare provider consultation is recommended 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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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 2 servings
‡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, calcium silicate, beta-carotene (color), vegetable juice (color).
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.
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.
Note: XTEND® EAA does not contain aspartame. The phenylketonurics notice is intended for people with the genetic disorder, phenylketonuria.
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: 8.6 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. | ||||
