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Workout recovery support; Muscle protein synthesis; Active lifestyle hydration and electrolytes
Active adults who train regularly and want convenient essential amino acids for post-workout recovery support, or those with low protein meals seeking added amino acid building blocks.
Mix 1 scoop in 8–10 fl oz of water and shake well; use 2 servings per day, taken intra-workout, post-workout, or on rest days. Amino acid drinks are typically well tolerated with or without food; sip during training to stay consistent.
Phenylketonurics: Contains phenylalanine.
Leucine activates the mTOR pathway, which may signal muscle protein synthesis after exercise.
Caution: May cause stomach discomfort in some; taking with water during or after workouts can improve tolerance.
Isoleucine participates in energy production in muscle and may support muscle protein building.
Caution: High amounts on an empty stomach may cause nausea in sensitive individuals.
Valine serves as a substrate for muscle energy and contributes to muscle protein formation.
Caution: Excessive intake may lead to digestive upset; follow labeled servings.
Threonine is an essential amino acid used to build proteins and support synthesis of structural proteins like collagen and elastin.
Caution: Amino acids can compete for transport; sticking to suggested servings helps maintain balance.
Lysine is required for protein synthesis and supports absorption of other amino acids through intestinal transporters.
Caution: Those following high-protein diets should monitor total amino acid intake to avoid digestive discomfort.
The branched-chain amino acids leucine, isoleucine, and valine provide key signals and substrates for muscle protein synthesis during and after training. Threonine and lysine add essential building blocks to complete protein formation, complementing the BCAAs for a more balanced EAA profile.
Label Warning: For healthy adults 18 years or 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. Phenylketonurics: contains phenylalanine.
Who should be cautious: People with phenylketonuria or who need to limit phenylalanine. Individuals with surgery planned in the next month. Those on medications or with medical conditions should discuss with a healthcare provider before use. Because this product contains L-tryptophan, those using SSRIs, SNRIs, or MAOIs are advised to consult a healthcare provider before combining with such medications.
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 10 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.^
When to Take Xtend® for Best Results:
Combine with any XTEND® branded product every day, even on rest days, to help maximize your recovery.
*Per serving
‡Based on IRI Total U.S. Multi-Outlet Data for cumulative USD retail sales, measured in RSP, from 2018-present.
^If used as directed
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.
Malic acid, natural and artificial flavors, citric acid, sucralose, acesulfame potassium, silicon dioxide, calcium silicate, fd&c yellow no. 5, fd&c red no. 40
Phenylketonurics: Contains phenylalanine.
Made in the U.S.A. using strategically sourced imported and domestic ingredients and components.
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.
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.
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: 8.2 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. | ||||
