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Workout recovery, Muscle protein support, Intra-workout hydration support
Active adults who train regularly and want convenient essential amino acid intake, or people with low protein meals seeking additional amino acids.
Mix 1 scoop in 8–10 fl oz of water and shake well; take 2 servings per day, ideally around workouts or between meals. Flavoured amino drinks are often well tolerated during training; adjust water for taste.
Phenylketonurics: Contains phenylalanine.
Leucine activates the mTOR pathway in muscle, which may signal protein synthesis and support recovery after exercise.
Caution: High doses of isolated BCAAs may compete with other amino acids for transport; take as directed and maintain a balanced protein intake.
Isoleucine is used by muscle for energy and may support muscle protein turnover during and after exercise.
Caution: May affect blood sugar responses; consider timing with meals if monitoring carbohydrate intake.
Valine serves as a substrate for muscle energy and helps balance nitrogen, which may support recovery.
Caution: Excess isolated BCAAs without adequate overall protein may not provide balanced amino support.
Threonine contributes to protein structure and collagen formation, supporting normal tissue repair processes.
Caution: People with very low-protein diets may benefit more from whole-protein sources to ensure a complete amino profile.
Lysine is required for building proteins and aiding carnitine production, which may support normal muscle repair.
Caution: May cause mild gastrointestinal discomfort in some people; take with water and avoid on an empty stomach if sensitive.
Leucine drives the primary anabolic signal, while isoleucine and valine provide complementary branched-chain substrates for energy and protein turnover. Threonine and lysine supply additional essential building blocks to complete muscle protein synthesis after training.
Label Warning: For healthy adults aged 18+. Do not use if pregnant or breastfeeding. Seek advice from a licensed, qualified healthcare professional before use, especially if taking medication or with 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. Those with high blood pressure or on sodium-restricted diets due to sodium content. Individuals sensitive to artificial sweeteners or food colour additives. People taking antidepressants such as SSRIs, SNRIs, or MAOIs should be cautious due to the presence of L-tryptophan; discuss with a healthcare provider before combining with medications that may cause interaction.
Storage: Store in a cool, dry place.
This product is guaranteed authentic and backed by our easy returns and refunds policy. Details
BCAAs, a subset of EAAs, may enhance muscle recovery and reduce fatigue. Pairing with EAAs ensures a comprehensive amino acid intake for optimal muscle support.
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 maximise your recovery.
*Per serving
‡Based on IRI Total U.K. Multi-Outlet Data for cumulative GBP 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 flavourings, 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.K. 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 breastfeeding. 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 the 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 be despatched with alternative packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and do not rely solely on the information provided by iHerb. This website has been machine translated as a courtesy to customers. iHerb does not represent or warrant that the translations are complete or error-free and iHerb is not responsible for any translation errors or omissions.
| 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 (i.e. 4 calories for carbohydrates, 4 calories for protein, 9 calories for fat.) in accordance with UK food labeling regulations. Use of an alternatively acceptable method, as provided in the regulations for determining calorie content, may provide different results. | ||||
