Vitamin B-12 Complex Sublingual --- 1,000 mcg, Liquid, 2 fl. oz. --- Supports Energy & Nervous System Health*
Lifesource Vitamins Vitamin B-12 Complex Sublingual combines clinically studied cobalamin with B-vitamins (B-1, B-2, B-3, B-5, B-6, folate) and vitamin C to support energy metabolism, nervous-system health, red blood cell formation, and cognitive well-being—especially in individuals with low or borderline B-12 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)
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Corrects B-12 deficiency (hematologic & neurologic)* — High-dose oral B-12 matched intramuscular injections in randomized trials for deficiency correction. (Vidal-Alaball 2005; Cochrane 2018)
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Nervous-system support in neuropathy* — Oral methylcobalamin improved neurophysiology, pain scores, and quality of life in DB-RCTs. (Didangelos 2021)
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Symptom improvement in diabetic neuropathy* — Double-blind trial reported improvements in somatic and autonomic symptoms. (Yaqub 1992)
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Adjunctive therapy benefit* — Methylcobalamin plus alpha-lipoic acid outperformed methylcobalamin alone in neuropathic symptom reduction. (Cross 2023)
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Perceived stress & mood support* — B-complex RCTs show reduced perceived stress and improved well-being. (Stough 2014; Kennedy 2010; Young 2019)
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Cognitive aging support (mixed evidence)* — Meta-analysis suggests possible slowing of cognitive decline in certain populations. (Wang 2022)
We monitor research from leading institutions — Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, MIT, University of Florida, Oregon State University – Linus Pauling Institute, Tufts, Boston University, Cornell, Columbia, and Ohio State — to ensure alignment with credible science.*
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 — 59
- Form — Liquid (Sublingual)
- Free From — Non-GMO, gluten-free, vegan*
- Quality — Third-party tested for identity, potency & purity
Perfect For:
- Individuals seeking support for energy metabolism & mental clarity*
- Vegetarians/vegans and older adults at risk for low B-12*
- Those managing stress or fatigue related to suboptimal B-vitamin status*
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-12 Complex Sublingual — supports energy metabolism, nervous system health, and red blood cell formation. Clinically Studied Ingredients — NIH/PubMed!*
