Build and maintain your muscles

  • Provides specific amino acids necessary for protein synthesis
  • Enhances muscle retention, recovery, and repair post-workout
  • Helps control blood sugar and insulin levels
  • Vegetarian source of BCAAs in the ideal ratio
Gluten Free

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The branched chain amino acids (BCAAs) are three essential amino acids that cannot be made within the body and must be obtained through diet: leucine, isoleucine and valine. Unlike other amino acids, BCAAs are primarily processed inside the mitochondria of muscle cells, making them extremely effective at stimulating muscle building. Although protein in general is needed to stimulate muscle growth, BCAAs and especially leucine are particularly vital to muscle growth and repair. In fact, studies have shown that protein blends without leucine did not actually stimulate muscle development. When taken before and after exercise, BCAAs can prevent protein breakdown and enhance recovery time by reducing muscle soreness.

BCAAs can also help prevent muscle loss in people in weakened conditions. They support muscle maintenance, and have the unique ability to promote muscle growth in non-exercising muscles when other muscles are worked. As a result, BCAAs are indicated for frail and elderly people just as much as strength athletes and exercise enthusiasts to promote strength and independence. BCAAs may also help control blood sugar and insulin, and have been suggested to help balance mood.

Any bodybuilder or competitive athlete will know the importance of supplementing with BCAAs to enhance their muscular health and performance, and so should you.

AOR Advantage

AOR’s BCAA offers a convenient way to get valuable branch chained amino acids into the diet. Unlike other amino acids, BCAAs are primarily processed inside the mitochondria of muscle cells, making them extremely effective at stimulating muscle building. AOR’s BCAA is derived from a vegetarian source.




Branched chain amino acids are a group of essential amino acids that includes L-leucine, L-isoleucine and L-valine. Studies have shown that these amino acids are involved in protein synthesis.


AOR™ guarantees that all ingredients have been declared on the label. Contains no wheat, gluten, corn, nuts, peanuts, sesame seeds, sulphites, mustard, dairy, eggs, fish, shellfish or animal byproduct.

Adult Dosage

Take one scoop (5 g) mixed with water or juice daily before a meal, or as directed by a qualified health care practitioner.


Do not use if pregnant or breastfeeding. Consult a health care practitioner for use beyond 90 days, if you have liver or kidney disease, or if you have been instructed to follow a low protein diet.

Main Applications
  • Muscle recovery and repair
  • Blood sugar control
  • Mood

The information and product descriptions appearing on this website are for information purposes only, and are not intended to provide or replace medical advice to individuals from a qualified health care professional. Consult with your physician if you have any health concerns, and before initiating any new diet, exercise, supplement, or other lifestyle changes.

Serving Size: One Scoop (5 g)
2500 mg
1250 mg
1250 mg

Non-medicinal Ingredients: sunflower lecithin.

Exercise & Muscle Recovery and Repair:
Study 1:
To determine the effects of BCAA supplementation on fatigue, muscle damage, and energy metabolism after endurance exercise, this randomized, double-blind, placebo-controlled clinical trial was carried out. Participants were randomized to receive a placebo control or BCAA group and were told to perform a bout of cycle training (70% VO2max intensity) to exhaustion. Fatigue substances, muscle damage substances, and energy metabolism substances were measured before ingesting BCAAs and placebos, 10 min before exercise, 30 min into exercise, immediately after exercise, and 30 min after exercise.
The results show a decrease in serotonin levels before, during, and after exercises in the supplementation group, compared to the placebo group. In addition, ammonia levels were significantly higher in the supplementation group before and during exercise but were significantly decreased at recovery. Lactate levels were significantly increased at the 30 minutes into exercise and significantly decreased in the post-exercise and recovery tests, while lactate levels were significantly lower in the placebo group. To determine the effect of BCAA on muscle damage, the levels of creatine kinase was measured in all participants. The results show a decrease in creatine kinase in the supplementation group 10 minutes before exercising and increased 30 minutes into the exercise and then decreased post-exercise and recovery. All of these results suggest that BCAA may reduce muscle damage associated with endurance exercise.

Study 2:
This randomized, double-blind, placebo-controlled clinical study was carried out to evaluate the effect of consuming a beverage containing BCAA during an eight-week resistance training program. Participants were randomly assigned to receive either BCAA (14 g), whey protein (28 g) or carbohydrates (28 g), while performing an 8-week resistance program. All participants followed a whole-body training program that involved training all major muscle groups once a week, using a 4-day training split and all were measured for body weight, body composition, and 10-rep mac on the bench press and squats before and after the 8-week program. All participants were also required to follow a standardized diet while on the program.
The results showed a significant gain in body weight than the whey and carbohydrate groups, as well as an increase in greater lean mass. The BCAA group also had a decrease in their percent body fat and muscular strength was significantly greater than the other groups, suggesting the benefit of BCAA supplementation on exercise performance, muscle recovery, body fat, and lean mass.

Study 3:
This systematic review and meta-analysis reviewed the available clinical evidence for the use of BCAA supplementation in alleviating skeletal muscle damage, within the context of exercise induced muscle damage or muscle injury. Changes in indirect markers of muscle damage were considered as primary outcome measures. Secondary outcome measures were the extent of change in indirect markers of muscle damage.
Eleven studies were included in the analysis and the results suggest that BCAA supplementation (at >200 mg/kg body weight per day) for over 10 days was associated with a positive outcome in exercise-induced low-to-moderate muscle damage. In addition, the analysis showed that BCAA supplementation was especially effective if administered before commencing damaging exercise.

Study 4:
This balanced, randomized, double-blind, cross-over design clinical study aimed to evaluate the effect of a multi-nutrient supplement containing BCAA on inflammatory status, endothelial function, physical function, and mood in middle-aged individuals, as well as improve recovery in exercise participants. Participants were randomized to receive either a placebo or supplement containing 3 g of BCAA for 28 days, then a one week washout period, before crossing over to the other group. Each participant was assessed for brachial artery flow-mediated dilation (FMD), blood measures, and physical performance.
Results showed a significant decrease in the inflammatory marker interleukin-6 (IL-6) and perceived energy also improved in the supplementation group, compared to the placebo group. Additionally, there was a significant decrease in general pain and joint pain in the male participants. There was also an increase in performance in the supplementation group, compared to the placebo group, thereby suggesting that a multi-nutrient supplement, containing BCAA may prolong the physical function and help maintain a healthy, active lifestyle.

Liver Health:
Study 1:
This systematic review and meta-analysis reviewed the evidence for the effect of BCAA on encephalopathy, hepatic decompensation, survival, infection, hospital stay and quality of life in adults with liver cirrhosis and porto-systemic encephalopathy. Nine studies, with 436 patients and a duration of use over 2 weeks, were included in this analysis. At meta-analysis, a significant improvement in the grade of encephalopathy was demonstrated in favour of branched-chain amino acids compared to other nutritional supplements, suggesting that BCAAs might improve porto-systemii encephalopathy and requiring more robust trials for more liver-protecting effects.

Study 2:
This multicenter, retrospective, observational, cohort design, involving 13 tertiary medical centers aimed to evaluate the effect of long-term BCAA supplementation in reducing the severity of liver disease in patients diagnosed with liver cirrhosis. Participants consumed BCAA (4.15 g, 8.3 g or 12.45 g) or control daily for at least 6 months and analyzed for significant differences in Child-Pugh (CP) scores, albumin levels and hepatic encephalopathy from baseline and difference between groups.
Results show significant improvement in MELD (model for end-stage liver disease) scores in the group supplemented with 12.45 g BCAA, compared to baseline and the control group. There was also a significant difference in serum bilirubin and COP score over time, suggesting that long term BCAA supplementation may be beneficial in patients with advanced liver cirrhosis.

Study 3:
The aim of this single-center, prospective clinical study was to evaluate the effect of BCAA on muscle strength and muscle mass in patients with liver cirrhosis. A 28-day pre-treatment observation period was followed by a 24-week supplementation period.
The results showed an increase in muscle strength and a slight decrease in skeletal muscle mass index, compared to the baseline and control groups, showing that BCAA improved low muscle strength in patients with chronic liver disease.

Study 4:
This meta-analysis of randomized controlled clinical trials was carried out to assess the benefits of BCAA supplementation in improving hepatic function in patients undergoing hepatic operation. Eleven clinical studies, including 510 patients, were included in the meta-analysis.
In comparison to the control groups, BCAA supplementation was associated with an improvement in hepatic function, as determined by a significant decrease in total bilirubin. BCAA supplementation was also associated with improvements in plasma levels of albumin and the liver enzyme alanine aminotransferase. In addition, the BCAA groups showed lower complication rates following their operations and lower mean duration of hospital stay, compared to the control groups. These results suggest that BCAA-enriched nutrition improves hepatic function in patients undergoing hepatic operation, thereby helping to reduce the complication risk, duration of hospital stay, and financial burden.

The European Society for Clinical Nutrition and Metabolism (ESPEN) guidelines published in 2006 provided guidelines intended to give evidence-based recommendations for the use of oral nutritional supplements and tube feeding in patients with liver disease. The guideline was discussed and accepted in a consensus conference and one of the recommendations included the use of BCAA for improvement of symptoms and prognosis in liver disease and quality of life.