Vitamin D-3 125 mcg (5,000 IU) – 1 oz – Un-Flavored – Bone & Immune Support*
High-potency Vitamin D3 (cholecalciferol) to support strong bones, immune health, and overall vitality.* Delicious citrus-flavored liquid delivers 5,000 IU per serving to help address deficiency and promote wellness.* Produced in FDA-registered, GMP-certified facilities and
3rd-party 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)
• Supports calcium absorption & bone strength* — RCTs show improved absorption. (NIH/PMC — Shapses SA, 2013)
• Helps prevent rickets & osteomalacia* — Corrects mineralization defects. (NIH/PMC — Griffin G, 2021)
• Supports immune function* — Meta-analysis found modest protective effect against ARIs with daily dosing. (NIH/PubMed — Jolliffe DA, 2021)
• Supports muscle strength & balance* — Improvements in older adults. (NIH/PMC — Qi P, 2024)
• Supports cardiovascular function* — Subgroup trials suggest BP regulation. (NIH/PubMed — Zhang D, 2020)
• Supports mood balance* — Meta-analysis shows small improvements in depressive symptoms. (NIH/PubMed — Wang R, 2024)
• Supports cancer outcomes (mortality signal)* — Reduced total cancer mortality in meta-analysis. (NIH/PMC — Keum N, 2019)
Additional Studies Showing Promising Benefits*
• Vitamin D3 & insulin sensitivity* — mixed trial outcomes. (NIH/PubMed — Pittas AG, 2019)
• Vitamin D3 & blood pressure* — generally null, possible subgroup benefit. (NIH/PubMed — 2021)
• Vitamin D3 & autoimmune disease* — reduced risk in large cohort. (NIH/PubMed — 2019)
Global Evidence & Authoritative Reviews*
• NIH ODS — Vitamin D Fact Sheet (NIH/ODS)
• NCCIH — Vitamins & Minerals overview (NCCIH)
• Harvard — Vitamin D & health overview (Harvard Health)
• Cleveland Clinic — Vitamin D deficiency explainer (Cleveland Clinic)
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 bone health & calcium absorption*
• Supports immune function*
• Supports muscle strength & balance*
• Supports cardiovascular function*
• Supports mood balance*
• Signals for lower cancer mortality*
• Physician-supervised repletion for deficiency*
• 3rd-party lab tested for identity, potency & purity
Suggested Use:1 Drop = 1,000 IU / 885 Servings; 5 Drops = 5,000 IU / 177 Servings; 10 Drops = 10,000 IU / 88 Servings. You control the dosage — 1,000 IU per single drop!*
Product Specifications
• Serving Size — See dosage above
• Servings Per Container — Variable by dosage
• Form — Un-flavored liquid
• Free From — Non-GMO, gluten-free, no artificial colors*
• Quality — Third-party tested for identity, potency & purity
Perfect For
• Individuals with limited sun exposure*
• Adults seeking bone & immune support*
• Those aiming to improve mood & energy*
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 D3 5,000 IU Liquid - Un-Flavored — supports bone strength, immunity & mood; drop-dose control; 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
