🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

14.3 Gram(s) Serving Size
30 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

Calories
Calories from Fat
Vitamin C
60 mg (100% DV)
10 mg (500% DV)
📊 7.7× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 10mg UL 100mg
6 mcg (100% DV)
✅ 2.5× RDA — within safe limits 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.006mg
300 mcg (100% DV)
📊 10.0× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 0.3mg
📊 Market median: 500.0mg (180 products) 📚 5 studies (Tier A: 0, B: 1)
This product: 11mg
Synergistic Metabolites
3 Gram(s)

Other Ingredients

Acesulfame Potassium Sucralose sweetener Natural and Artificial Flavor

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (89% of products) Nutrient (56% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: As a dietary supplement mix two (2) level scoops (approximately 14.3 gm) with 8-12 ounces of pure cold water or juice of choice. Stir briskly or shake in a closed container until mixed. Best if consumed immediately before or after a workout or within 30 minutes of preparation. Add sweetener, increase water or juice content for taste preference.

⚠️ Warnings & Precautions

ALLERGY INFORMATION: Manufactured in a facility that processes milk, soy and egg proteins, peanuts, other tree nuts and wheat.

If pregnant, nursing or taking prescription medications, consult a licensed healthcare practitioner prior to use.

WARNING STATEMENT: Consult a Physician before starting any diet and exercise program and before using this product. Discontinue use and call a physician or licensed qualified health care professional immediately if you experience unexpected side effects.

KEEP OUT OF REACH OF CHILDREN.

🧪 Formulation Notes

A scientifically-based formula to provide the body with high potency branched-chain amino acids in the ideal and evidenced-based 2:1:1 ratio of Leucine, Isoleucine, and Valine.

Additional Information

- ANTI-CATABOLIC - ENDURANCE - RECOVERY

Max Muscle Sports Nutrition is proud to introduce XTR, Extreme Training Recovery Formula.

Specifically designed for the post-workout, the ingredients in XTR functions to support rapid recovery, muscle anabolism and anti-catabolism. BCAAs (L-Leucine, L-Valine and L-Isoleucine) are highly concentrated in muscles (35%) and have been shown to serve as important fuel sources during periods of high-intensity exercise. The BCAAs improve protein & nitrogen balance in muscle, preserve muscle glycogen reserves, suppress protein catabolism, and overall have an anti-catabolic effect. L-Citrulline-DL-malate promotes aerobic energy production, serves to remove lactate and ammonia from muscle cells, reduces muscle fatigue, supports arginine synthesis and is a superior ingredient for nitric oxide (NO) production. L-Glutamine (Gln) is the most abundant amino acid in muscles (60%). Gln is often depleted during exercise and overtraining. Athletes may not produce enough Gln to support muscle requirements during recovery. Gln is a "workhorse" amino acid to prevent protein catabolism (breakdown) and clearly anti-catabolic. L-Glycine supports natural GH and adds to the sweet flavor of XTR. Arginine Alpha-Ketoglutarate (A-AKG) has been shown to enhance the absorption or arginine. Arginine Alpha-Ketoglutarate enhances the production of nitric oxide. Alpha-ketoglutaric Acid or Alpha-ketoglutarate (AKG) is a major link or gateway of the Citric Acid Cycle to amino acid (protein) synthesis. Alpha-ketoglutarate is a metabolic precursor to synthesize cellular glutamine. AKG has been used to improve athletic performance. Vitamins C, B6, B12 and Biotin are metabolic cofactors for enhanced biochemical utilization of the BCAAs.

QIG QUALITY INGREDIENTS GUARANTEED

ADVANCED BRANCHED-CHAIN AMINO ACID FORMULA

MM SPORTS NUTRITION(R)

EXTREME TRAINING RECOVERY - High Potency, Dual-Indication Pre & Post Workout Formula - Supports Muscle Anabolism & Rapid Recovery - Enhances Blood Volume for Increased Exercise Intensity

STORE IN A COOL, DRY PLACE AWAY FROM MOISTURE AND SUNLIGHT. ALWAYS KEEP TIGHTLY SEALED.

Product Details

UPC / SKU 6 91381 58607 0
DSLD Entry Date 2014-10-27
Product Type Other Combinations
Form Powder
DSLD ID 36969
Data Updated 2026-04-11

Research Evidence

237 Research Sources
53 Avg Quality Score
83 Meta Analysis
74 Systematic Review
45 Rct
29 Clinical Trial
2 Guideline
2 Regulatory Source
1 Openfda Safety
A Associations between serum Homocysteine, vitamin B9, and vitamin B12 levels and the formation of intracranial Aneurysms: A systematic review and meta-analysis
Meta Analysis Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2025
A Intake of vitamin B6, folate, and vitamin B12 and risk of coronary heart disease: a systematic review and dose-response meta-analysis of prospective cohort studies
Meta Analysis Critical reviews in food science and nutrition 2019
A Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency
Systematic Review The Cochrane database of systematic reviews 2018
A Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression
Meta Analysis Nutrients 2021
A Efficacy of different routes of vitamin B12 supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta-analysis
Systematic Review Irish journal of medical science 2024
B Helicobacter pylori infection and micronutrient deficiency in pregnant women: a systematic review and meta-analysis
Meta Analysis BMJ open gastroenterology 2020
B Vitamin B12 supplementation during pregnancy for maternal and child health outcomes
Systematic Review The Cochrane database of systematic reviews 2024
B A comprehensive review and meta-regression analysis of randomized controlled trials examining the impact of vitamin B12 supplementation on homocysteine levels
Meta Analysis Nutrition reviews 2024
B Relationship between vitamin B12 levels and motor development: A systematic review
Systematic Review Clinical nutrition ESPEN 2024
B Vitamin B12, folate, and homocysteine in metabolic syndrome: a systematic review and meta-analysis
Meta Analysis Frontiers in endocrinology 2023
View all evidence for Vitamin B12 →

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