LifeSource Vitamins Acetyl L-Carnitine — 1,000 mg, 100 Capsules — Supports Brain & Nerve Cell Function*
Our Acetyl L-Carnitine (ALCAR) provides 1,000 mg per serving of an acetylated form of L-carnitine that crosses the blood-brain barrier to support brain and nerve cell function, promote cognitive performance and mental clarity, support energy metabolism via mitochondrial fatty-acid transport, support healthy nerve cell function, support physical endurance during exercise, help maintain energy levels and reduce feelings of fatigue for daily vitality, support healthy glucose metabolism, support healthy weight management when combined with diet and exercise, support healthy liver function, support muscle recovery after physical activity, support healthy muscle function and integrity, and support mitochondrial function and cellular energy production* — while respecting evidence-based applications. Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity and potency by LifeSource Vitamins.
- Supports physical endurance during exercise*
- Supports healthy nerve cell function*
- Supports healthy glucose metabolism*
- Helps maintain energy levels and reduce feelings of fatigue for daily vitality*
- Supports healthy weight management when combined with diet and exercise*
- Supports healthy liver function*
- Supports muscle recovery after physical activity*
- Supports healthy muscle function and integrity*
- Supports mitochondrial function and cellular energy production*
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. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits
✓ Supports cognitive function and mental clarity* — ALCAR has been studied for maintaining cognitive performance in adults.*
NIH/PMC — Full text, 2020
✓ Promotes physical performance and recovery* — Human trials report benefits for exercise capacity and post-exercise recovery.*
NIH/PMC — Full text, 2021
✓ Supports healthy nerve cell function* — Evidence suggests benefits for peripheral nerve comfort and function.*
NIH/PMC — Full text, 2019
✓ Supports healthy glucose metabolism* — Studies explore effects on insulin sensitivity and metabolic markers.*
NIH/PubMed — 2020
✓ Supports mitochondrial function and antioxidant defense* — ALCAR supports mitochondrial efficiency and helps reduce oxidative stress.*
NIH/PMC — Full text, 2009
✓ Helps maintain energy levels and reduce feelings of fatigue for daily vitality* — Reports of reduced perceived fatigue in selected groups.*
NIH/PubMed — 2020
✓ Supports healthy liver function* — Exploratory evidence of improved enzyme profiles.*
NIH/PMC — Full text, 2022
✓ Supports muscle recovery after physical activity* — Studies note attenuated markers after strenuous activity.*
NIH/PMC — Full text, 2022
✓ Supports healthy muscle function and integrity* — ALCAR associated with muscle support in exercise contexts.*
NIH/PMC — Full text, 2021
Additional / Promising Evidence
✓ Supports physical endurance during exercise signals* — ALCAR associated with improved exercise capacity in human studies.*
NIH/PMC — Full text, 2021
✓ Helps maintain energy levels and reduce feelings of fatigue* — Reports of reduced perceived fatigue in selected groups.*
NIH/PubMed — 2020
✓ Supports healthy glucose metabolism signals* — Studies explore effects on metabolic markers.*
NIH/PubMed — 2020
✓ Supports healthy weight management signals when combined with diet and exercise* — Exploratory evidence in metabolic contexts.*
NIH/PMC — Full text, 2022
✓ Supports healthy liver function signals* — Exploratory evidence of improved enzyme profiles.*
NIH/PMC — Full text, 2022
✓ Supports muscle recovery after physical activity signals* — Studies note attenuated markers after strenuous activity.*
NIH/PMC — Full text, 2022
University-Led & Academic Studies
✓ Provides carnitine and energy metabolism context* — OSU Linus Pauling Institute overviews ALCAR in mitochondrial function.*
OSU Linus Pauling Institute — Carnitine
✓ Summarizes brain health and lifestyle context* — Harvard Health overviews ALCAR for cognitive and nerve support.*
Harvard Health — Brain & Nerve
✓ Provides complementary health evidence summaries* — NCCIH/NIH on ALCAR for fatigue and cognitive contexts.*
NCCIH — Acetyl-L-Carnitine
Global Evidence & Reviews
✓ Reinforces cognitive and nerve support evidence* — ALCAR studied for maintaining cognitive performance and nerve function.*
NIH/PMC — Full text, 2020
✓ Supports physical performance and recovery evidence* — Human trials report benefits for exercise capacity and post-exercise recovery.*
NIH/PMC — Full text, 2021
✓ Provides metabolic support evidence* — Studies explore effects on metabolic markers.*
NIH/PubMed — 2020
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
- Acetyl L-Carnitine (ALCAR) — Acetylated form of L-carnitine that supports brain & nerve cell function, energy metabolism, and cellular antioxidant defenses* (NIH/PMC — Full text, 2020).
Brief Benefit Bullets
- Supports cognitive function & mental clarity*
- Supports healthy nerve cell function*
- Supports energy metabolism via mitochondrial fatty-acid transport*
- Supports physical endurance during exercise*
- Helps maintain energy levels and reduce feelings of fatigue for daily vitality*
- Supports healthy glucose metabolism*
- Supports healthy weight management when combined with diet and exercise*
- Supports healthy liver function*
- Supports muscle recovery after physical activity*
- Supports healthy muscle function and integrity*
- Supports mitochondrial function and cellular energy production*
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3rd-party tested for identity, potency & purity
Suggested Use
Adults: Take 1–2 capsules daily, preferably on an empty stomach with water or juice, or as directed by your healthcare professional. If pregnant, nursing, taking medications, or have a medical condition, consult your physician.*
Product Specifications
• Serving Size — 2 Vegetarian Capsules
• Servings Per Container — 50
• Acetyl-L-Carnitine — 1,000 mg per serving (from 1,205 mg Acetyl-L-Carnitine HCl)
• Other Ingredients — Hypromellose (cellulose capsule), rice flour, stearic acid (vegetable source), silicon dioxide
• Form — Vegetarian capsules
• Free From — Non-GMO; no artificial colors or flavors*
• Quality — Third-party tested for identity, potency & purity
3rd-Party Testing: Every batch is independently verified for identity, purity, and potency.
Click here to see our 3rd-party testing.*
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.
Acetyl L-Carnitine — supports brain & nerve cell function, energy metabolism, and cellular antioxidant defenses. 100 vegetarian capsules. Third-party tested. Clinically Studied Ingredients — NIH/PubMed!*
