Vitamin D3 20,000 IU/mL Injectable | 10-Vial Kit

{“@context”: “https://schema.org”, “@type”: “FAQPage”, “mainEntity”: [{“@type”:”Question”,”name”:”How is this QSC injectable supplied?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”QSC injectable solutions are supplied ready-to-use — no reconstitution required. Each vial contains the stated concentration in pharmaceutical-grade carrier (oil or aqueous). Draw using a sterile syringe appropriate for the solution viscosity.”}},{“@type”:”Question”,”name”:”How should this QSC injectable be stored?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Oil-based solutions: store at room temperature (15–25°C), away from direct sunlight — do not refrigerate as cold temperatures can cause crystallisation. Aqueous solutions: store at 2–8°C. Properly stored, injectable solutions are stable for 2–3 years.”}},{“@type”:”Question”,”name”:”What purity is this QSC injectable and how is it verified?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”All QSC injectable compounds are ≥99% pure by HPLC on every production batch, with MS-confirmed identity. COA is published on the product page and independently verifiable at verify.janoshik.com.”}}]}

What is Vitamin D3 (D320 — 20,000 IU/mL)?

Vitamin D3 (Cholecalciferol 20,000 IU/mL — high-concentration injectable) is cholecalciferol — C₂₇H₄₄O, MW 384.6 — at 20,000 IU/mL in oil-based injectable solution. Cholecalciferol is the natural form of Vitamin D3, converted to 25-hydroxyvitamin D3 (calcidiol) in the liver and then to the active 1,25-dihydroxyvitamin D3 (calcitriol) in the kidney. Calcitriol activates the vitamin D receptor (VDR) — a nuclear receptor regulating calcium/phosphorus metabolism, immune function, cell proliferation, and hundreds of downstream genes.

Research Applications

Quick Specs

Certificate of Analysis (COA)

Frequently Asked Questions