Vitamin B-50 Complex --- 50 mg B-Vitamins, Capsules, 100 --- Supports Energy Metabolism & Brain Health*
Lifesource Vitamins Vitamin B-50 Complex combines clinically studied B-vitamins (B-1, B-2, B-3, B-5, B-6, B-12, Biotin, Folate) with Choline, Inositol, and PABA to support energy metabolism, brain health, nervous system function, and stress relief. Produced in FDA-registered, GMP-certified facilities for quality assurance.*
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 leading health organizations and insights from top global universities to ensure our guidance aligns with credible science.*
Clinically Studied Benefits
✓ Corrects B-12 deficiency (hematologic & neurologic) — High-dose oral B-12 is as effective as intramuscular therapy in randomized trials of deficiency.
NIH/PubMed — Vidal-Alaball, 2005
✓ Homocysteine & brain atrophy (MCI subgroup) — In older adults with mild cognitive impairment and elevated homocysteine, folate+B-6+B-12 slowed whole-brain atrophy vs placebo (double-blind RCT).
NIH/PubMed — Smith, 2010
✓ Cognition in low-folate elders — Three-year folic acid supplementation improved memory and information processing (DB-RCT).
NIH/PubMed — Durga, 2005
✓ Stress & mood in healthy but stressed adults — B-complex formulations reduced perceived stress and improved mood/well-being (randomized, placebo-controlled).
NIH/PubMed — Stough, 2014
✓ Neurologic support with adequate B-6/B-12 status — Trials highlight roles in neurotransmitter synthesis and nerve function within multi-B interventions.
NIH/PubMed — Stough, 2014
Additional / Promising Evidence
✓ Homocysteine lowering & CVD outcomes — B-vitamins lower homocysteine, but large outcome RCTs did not show reduced major cardiovascular events.
NIH/PubMed — HOPE-2, 2006
✓ Fatigue/energy in generally healthy adults — Some RCTs report improved subjective energy/stress; effects vary by baseline status and formulation.
NIH/PubMed — Stough, 2014
✓ Biotin for brittle nails/skin — Open-label human data suggest nail thickness improvements; controlled evidence is limited.
NIH/PubMed — JAAD, 1993
University-Led & Academic Studies
✓ Homocysteine & brain atrophy (MCI subgroup) — In older adults with mild cognitive impairment and elevated homocysteine, folate+B-6+B-12 slowed whole-brain atrophy vs placebo (double-blind RCT).
NIH/PubMed — Smith, 2010
✓ Cognition in low-folate elders — Three-year folic acid supplementation improved memory and information processing (DB-RCT).
NIH/PubMed — Durga, 2005
✓ Stress & mood in healthy but stressed adults — B-complex formulations reduced perceived stress and improved mood/well-being (randomized, placebo-controlled).
NIH/PubMed — Stough, 2014
Global Evidence & Reviews
✓ NIH ODS — B Vitamins — Health-professional fact sheets on roles, deficiency, supplementation, and safety for B-complex vitamins.
NIH/ODS — B Vitamins
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
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Vitamin B-12 (Cyanocobalamin) — Supports energy, nerve health, and red blood cell production; oral high-dose therapy is effective for deficiency in RCTs. (NIH/PubMed — Vidal-Alaball, 2005; NIH/PubMed — Smith, 2010)
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Folate (Folic Acid) — Supports one-carbon metabolism and healthy homocysteine; cognitive benefits shown in low-folate elders. (NIH/PubMed — Durga, 2005)
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Vitamin B-6 (Pyridoxine HCl) — Coenzyme for neurotransmitter synthesis; included in B-complex RCTs showing stress/mood benefits. (NIH/PubMed — Stough, 2014)
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Biotin — Promising data for brittle nails (open-label human studies); controlled trials limited. (NIH/PubMed — JAAD, 1993)
Brief Benefit Bullets
- Powers energy metabolism for daily vitality*
- Supports brain & nervous system health*
- Helps maintain healthy homocysteine metabolism*
- Promotes cognitive performance in select groups*
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3rd-party lab tested for purity & potency
Suggested Use
Take 1 capsule daily with a meal, or as directed by your healthcare professional. Do not exceed recommended dose. If pregnant, nursing, taking medications, or have a medical condition, consult your physician.*
Product Specifications
• Serving Size — 1 Capsule
• Servings Per Container — 100
• Form — Capsules
• Free From — Non-GMO, gluten-free*
• 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.
Vitamin B-50 Complex 50 mg capsules — supports energy metabolism & brain health. Clinically Studied Ingredients — NIH/PubMed!*
