BCAA 5,000 — 5,000 mg, Powder, 11.65 oz (30 Servings) — Supports Muscle Recovery & Endurance*
LifeSource Vitamins BCAA 5,000 combines clinically studied leucine, isoleucine, and valine in a 2:1:1 ratio with glutamine in a delicious watermelon-flavored powder to support muscle recovery, promote endurance and strength, help reduce post-exercise soreness, support protein synthesis for muscle growth, promote energy production during workouts, help preserve lean mass, support immune function after intense exercise, promote faster return of strength, help maintain performance during prolonged activity, and support comprehensive muscle and athletic wellness* — while respecting optimal branched-chain amino acid synergy. Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity and potency by LifeSource Vitamins.
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. In addition, we reference reviews from 39 leading health organizations and insights from 20 top global universities to ensure our guidance aligns with credible, evidence-based science.*
Clinically Studied Benefits
✓ Supports muscle recovery* — BCAAs reduce DOMS post-exercise in clinical studies.*
NIH/PMC — Fouré A, 2018
✓ Helps reduce muscle damage* — BCAAs lower CK and damage biomarkers in human trials.*
NIH/PubMed — Hsu Y, 2024
✓ Leucine stimulates protein synthesis* — Activates mTOR for muscle growth in clinical research.*
NIH/PMC — Kimball SR, 2016
✓ BCAAs enhance post-exercise recovery* — Faster return of strength observed in human studies.*
NIH/PMC — Martínez-Puig D, 2025
✓ BCAAs improve endurance* — Delay fatigue in prolonged exercise in clinical trials.*
NIH/PMC — Gualano B, 2014
✓ BCAAs reduce perceived fatigue* — Systematic review confirms lower RPE in exercise.*
NIH/PMC — Thomas DT, 2024
✓ BCAAs preserve lean mass* — Support during calorie restriction in human research.*
Harvard Nutrition Source
✓ Glutamine supports immunity* — Maintains immune health in athletes in clinical studies.*
Cleveland Clinic — 2023
✓ BCAAs promote energy production* — Contribute to ATP supply during exercise.*
NIH/PMC — Gualano B, 2014
✓ BCAAs may support weight management* — Linked with fat metabolism in long-term studies.*
Cambridge Univ — Qin LQ, 2015
Additional / Promising Evidence
✓ May support mental focus* — Reduce serotonin-related fatigue during exercise.*
NIH/PMC — Gualano B, 2014
✓ May enhance recovery time* — Meta-analyses support faster recovery post-exercise.*
NIH/PMC — Thomas DT, 2024
✓ May support liver health* — BCAA benefits in hepatic stress in clinical contexts.*
NIH/PMC — Muto Y, 2019
✓ May promote gut health* — Glutamine improves barrier integrity in studies.*
NIH/PMC — van der Hulst R, 2017
✓ May improve insulin sensitivity* — Glucose metabolism modulation in research.*
NIH/PMC — Doi M, 2014
✓ May reduce soreness* — Additional DOMS reduction data from trials.*
NIH/PMC — Fouré A, 2018
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients (per serving)
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L-Leucine* — Activates mTOR to stimulate protein synthesis.*
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L-Isoleucine* — Supports energy during workouts.*
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L-Valine* — Preserves lean mass.*
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L-Glutamine* — Supports immune recovery post-workout.*
Brief Benefit Bullets
- Promotes faster muscle recovery and less soreness*
- Helps reduce muscle damage biomarkers*
- Boosts muscle protein synthesis for growth*
- Improves exercise endurance and reduces fatigue*
- Helps preserve lean mass during calorie restriction*
- Supports energy production and ATP availability*
- Provides immune system support post-workout*
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3rd-party lab tested for purity & potency
Suggested Use
Mix 1 scoop (11 g) with 8–12 oz water or juice and consume before, during, or after exercise. For general use, take daily with a meal. If pregnant, nursing, taking medications, or have a medical condition, consult your physician.*
Product Specifications
- Serving Size — 1 scoop (11 g)
- Servings Per Container — 30
- Form — Powder (Watermelon Flavor)
- Free From — Non-GMO, Gluten-Free, Vegan*
- Quality — Third-party tested for identity, potency & purity
LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
LifeSource BCAA 5,000 — 5,000 mg Powder (30 servings). Supports recovery, endurance & strength. Non-GMO, vegan, 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
