B Vitamin Complex - Veg Capsules - Supports Energy Metabolism & Nervous System Health*
Lifesource Vitamins B Vitamin Complex supplies a balanced spectrum of B-vitamins (B-1, B-2, B-3, B-5, B-6, B-12, Biotin, Folate) plus choline, inositol, and PABA to support cellular energy metabolism, nervous-system function, red blood cell formation, and day-to-day stress resilience—especially in those with low or borderline B-vitamin status. Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for identity, potency & purity.*
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 science.*
Clinically Studied Benefits (with research)
✓ Corrects B-12 deficiency (hematologic & neurologic)* — High-dose oral B-12 was as effective as intramuscular injections in RCTs for deficiency, normalizing biomarkers and supporting clinical outcomes.*
NIH/PubMed — Vidal-Alaball, 2005
✓ Nervous-system support in neuropathy* — Oral methylcobalamin improved neurophysiology, sudomotor function, pain scores, and quality of life versus placebo over 12 months (DB-RCT).*
NIH/PMC — Didangelos, 2021
✓ Perceived stress & mental well-being* — Randomized, placebo-controlled trials of B-complex formulations reduced perceived stress and improved mood/well-being in healthy but stressed adults.*
NIH/PMC — Stough, 2014
✓ Perceived stress & mental well-being — additional RCT evidence* — Human trials reported improvements in mood/well-being outcomes with B-complex supplementation in stressed adults.*
NIH/PubMed — Kennedy, 2010
✓ Brain atrophy in mild cognitive impairment (MCI) subgroup* — In adults with MCI and elevated homocysteine, folic acid, B-6, and B-12 slowed whole-brain atrophy versus placebo (DB-RCT).*
NIH/PMC — Smith, 2010
✓ Memory support in folate-insufficient older adults* — Folic acid supplementation over 3 years improved memory and information-processing speed versus placebo in folate-insufficient older adults (DB-RCT).*
NIH/PubMed — Durga, 2005
Additional / Promising Evidence
✓ Supports healthy homocysteine metabolism (outcomes vary)* — B-vitamins reliably lower homocysteine, but large outcome RCTs did not reduce major cardiovascular events.*
NIH/PubMed — HOPE-2 Investigators, 2006
✓ Skin/Hair/Nails support with biotin (strongest in deficiency)* — Benefits are clearest in documented deficiency; routine use in well-nourished individuals has limited controlled human evidence (authoritative NIH overview).*
NIH/ODS — Biotin, 2024
University-Led & Academic Studies
✓ Oral vs IM B-12 in deficiency (review evidence)* — High-dose oral therapy was comparable to injections across randomized trials summarized in a review (multi-center).*
NIH/PMC — Cochrane, 2018
✓ B-complex and stress-related outcomes* — Double-blind RCTs report reductions in perceived stress and improved mood measures with B-complex supplementation.*
NIH/PMC — Stough, 2014
✓ Neuroprotection in MCI (MRI outcomes)* — Homocysteine-lowering B-vitamins slowed brain atrophy on MRI in an academic double-blind RCT.*
NIH/PMC — Smith, 2010
Global Evidence & Reviews
✓ Global review evidence for oral B-12 therapy* — Review evidence summarizes oral B-12 effectiveness for deficiency management.*
NIH/PMC — Cochrane, 2018
✓ Human RCT evidence for stress/mood outcomes* — Placebo-controlled research evaluates perceived stress and well-being outcomes with B-complex supplementation.*
NIH/PubMed — Kennedy, 2010
✓ Human trial evidence for cognitive/brain outcomes in select groups* — Human RCT evaluated B-vitamin effects on brain atrophy outcomes in an MCI subgroup with elevated homocysteine.*
NIH/PMC — Smith, 2010
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
- Vitamin B-1 (Thiamin)*
- Vitamin B-2 (Riboflavin)*
- Vitamin B-3 (Niacin)*
- Vitamin B-5 (Pantothenic Acid)*
- Vitamin B-6 (Pyridoxine)*
- Vitamin B-12 (Methylcobalamin)*
- Biotin*
- Folate*
- Choline*
- Inositol*
- PABA*
Brief Benefit Bullets
- Supports cellular energy metabolism (coenzyme roles of B-vitamins)*
- Helps maintain healthy nerves & myelin (with adequate B-12 status)*
- Promotes red blood cell formation; helps resolve megaloblastic anemia due to B-12/folate deficiency*
- Supports cognitive function in select groups (e.g., MCI with high homocysteine)*
- May reduce perceived stress in stressed adults (select RCTs)*
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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 — Veggie Capsule
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.
B Vitamin Complex veg capsules support energy metabolism, nervous system function, and stress resilience with human-study citations and 3rd-party testing. Clinically Studied Ingredients — NIH/PubMed!*
