Liquid Methyl B12 Complex 1200 mcg — Liquid (Sublingual), 2 fl oz — Supports Energy Metabolism & Nervous System Health*
Lifesource Vitamins Liquid Methyl B12 Complex 1200 mcg combines bioactive methylcobalamin with complementary B-vitamins (B-1, B-2, B-3, B-5, B-6, Folate) and Vitamin C in a sublingual liquid to support energy metabolism, nervous system health, and healthy homocysteine metabolism. Produced in FDA-registered, GMP-certified facilities for quality assurance.*
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 cobalamin was as effective as intramuscular therapy in randomized clinical trials of B-12 deficiency. (Kuzminski 1998, Blood (PubMed); Cochrane Review 2018 (PMC))
- Raises serum B-12 & improves functional markers — Oral high-dose B-12 increased serum cobalamin and reduced methylmalonic acid/homocysteine versus low dose/placebo (randomized evidence). (Vidal-Alaball 2005, RCT review (PubMed))
- Homocysteine & brain atrophy (MCI subgroup) — In older adults with mild cognitive impairment and elevated homocysteine, folate+B-6+B-12 slowed whole-brain atrophy versus placebo (double-blind RCT). (Smith 2010, PLoS One (PMC))
- Cognition in low-folate elders — Three-year folic acid (with stable B-12 status) improved memory and processing speed versus placebo (DB-RCT). (Durga 2005, Lancet (PubMed))
- Stress & mood in healthy but stressed adults — B-complex formulations (including B-12) reduced perceived stress and improved mood/well-being (randomized, placebo-controlled). (Stough 2014 (PMC))
Promising/Traditional (with human data & limitations)*
- Sub-lingual vs standard oral B-12* — Human studies suggest both forms can normalize B-12 markers; head-to-head trials are limited and formulations/doses vary. (Use under clinician guidance in deficiency.)
- Homocysteine lowering & major CVD events* — Although B-vitamins lower homocysteine, large outcome RCTs did not reduce major cardiovascular events. (HOPE-2 2006 (PubMed))
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
- Powers energy metabolism for daily vitality*
- Supports nervous system health & myelin integrity*
- Promotes red blood cell formation to help prevent megaloblastic anemia*
- Helps maintain healthy homocysteine metabolism*
- Supports mental clarity in B-12–deficient individuals*
- 3rd-party lab tested for purity & potency
Suggested Use
Place 1 dropper (1 mL) under the tongue daily; hold for ~30 seconds before swallowing, 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 Dropper (1 mL)
- Servings Per Container — 60
- Form — Liquid (Sublingual)
- Free From — Non-GMO, gluten-free, vegan*
- Quality — Third-party tested for identity, potency & purity
Perfect For:
- Individuals with low B-12 intake or absorption (e.g., vegans, older adults)*
- Those seeking convenient sublingual B-12 for energy & cognition*
- Adults aiming to support healthy homocysteine metabolism*
Key Ingredients
Vitamin B-12 (Methylcobalamin) — Supports energy, nerve health, and red blood cell production; high-dose oral cobalamin regimens have RCT-level evidence for correcting deficiency. (Kuzminski 1998; Cochrane 2018)
Vitamin B-6 (Pyridoxine) — Cofactor in neurotransmitter synthesis; supports mood and brain health. (Human data (PMC))
Folate (Vitamin B-9) — Required for one-carbon metabolism and DNA synthesis; with B-12 helps normalize homocysteine. (Review of human physiology (PMC))
Vitamin C — Antioxidant support and cofactor functions (supportive nutrient).
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.
Liquid Methyl B12 Complex (sublingual) — supports energy, nerves, and healthy homocysteine. Human-study-linked evidence (PubMed/PMC). 3rd-party tested.
