B-100 Complex --- 100 mg B-Vitamins, 100 Veg Capsules --- Supports Energy Metabolism & Nervous System Health*
Lifesource Vitamins B-100 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 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 (1,000–2,000 mcg/day) was as effective as intramuscular injections in RCTs for deficiency, normalizing biomarkers and supporting clinical outcomes. (Vidal-Alaball 2005, PubMed; Cochrane 2018, PMC)
- Nervous-system support in neuropathy — Oral methylcobalamin 1 mg/day improved neurophysiology, sudomotor function, pain scores, and quality of life vs placebo over 12 months (DB-RCT). (Didangelos 2021, PMC)
- 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. (Stough 2014, PMC; Kennedy 2010, PubMed)
- Brain atrophy in mild cognitive impairment — In adults with MCI and elevated homocysteine, folic acid+B-6+B-12 slowed whole-brain atrophy vs placebo (DB-RCT). (Smith 2010, PLoS One, PMC)
- Memory in older adults — Folic acid supplementation over 3 years improved memory and information-processing speed vs placebo in folate-insufficient older adults (DB-RCT). (Durga 2005, Lancet, PubMed)
Promising/Traditional (with human data & limitations)*
- Homocysteine & cardiovascular outcomes* — B-vitamins reliably lower homocysteine, but large outcome RCTs did not reduce major cardiovascular events. (HOPE-2, NEJM 2006)
- Skin/Hair/Nails (biotin) — Benefits are clearest in documented deficiency; routine use in well-nourished individuals has limited controlled human evidence. (Authoritative overview: NIH ODS)
University & Global Studies (Human — PubMed/PMC-Linked)
- Oral vs IM B-12 in deficiency — High-dose oral therapy comparable to injections (Cochrane review of RCTs; multi-center). (Cochrane 2018, PMC)
- B-complex & workplace stress — University-led, double-blind RCTs show reductions in perceived stress and improved mood with B-complex. (Stough 2014, PMC; Kennedy 2010, PubMed)
- Neuroprotection in MCI — Homocysteine-lowering B-vitamins slowed brain atrophy on MRI (academic DB-RCT). (Smith 2010, PMC)
We monitor research from the world’s leading institutions — including Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge University, Oxford, Stanford, Yale, MIT, the University of Florida, Oregon State University – Linus Pauling Institute, Tufts, Boston University, Cornell, Columbia, and Ohio State — to ensure our guidance remains aligned with the highest standards of credible science.*
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)*
- 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
Perfect For:
- Adults seeking daily support for energy metabolism & mental clarity*
- Individuals with higher metabolic demands or dietary limitations (e.g., low B-vitamin intake)*
- Those looking to support healthy homocysteine metabolism and nervous-system function*
Key Ingredients
Vitamin B-12 (Methylcobalamin) — Essential for neurologic function and red blood cell production; high-dose oral therapy effective for deficiency (human RCTs). (Vidal-Alaball 2005; Cochrane 2018)
Vitamin B-6 (Pyridoxine) — Coenzyme for neurotransmitter synthesis; part of stress/mood RCT formulations. (Stough 2014, PMC)
Folate (Folic Acid/Folinates) — Supports DNA synthesis and homocysteine metabolism; cognitive benefits shown in folate-insufficient older adults. (Durga 2005, PubMed)
Biotin — Cofactor in energy metabolism; strongest human evidence in deficiency states (see ODS overview).
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-100 Complex — daily B-vitamin support for energy metabolism, nervous-system health & homocysteine management. Human studies (PubMed/PMC) + 3rd-party tested!*
