Jarrow Formulas Vitamin D3 gives highly bioavailable cholecalciferol to support bone health and immune function, and it’s a dependable vitamin d supplement from a brand that sticks to strict quality.

Each softgel provides a solid 125 mcg dose of cholecalciferol, meant for daily use and easy absorption.

A brand built on strict quality controls and research-informed sourcing stands out.

Available Sizes & Variants:

100 softgels - a convenient daily dose for busy lives.

Benefits & Features:

• Supports bone health by improving calcium absorption and maintaining strong, healthy bones over time.
• Promotes immune health by activating vitamin D receptors in immune cells.
• Cholecalciferol, the star ingredient, is the natural form of vitamin D and a vitamin d3 supplement, chosen for superior bioavailability and stronger vitamin D status in everyday life, even during darker months.
• Simple daily dose supports regular intake.
• Free from major allergens, giving reassurance to those with dietary sensitivities.

Jarrow Formulas emphasises cGMP compliant production and collaboration with researchers worldwide to guide ingredient choices. Each softgel delivers 125 mcg of cholecalciferol, the natural vitamin D form, chosen for reliable absorption and bone support. With a bottle of 100 softgels, the brand keeps daily routines simple while staying committed to purity, strength, and transparent formulation. Trusted by health teams. Quality you can feel. Made with care.

Olive oil, softgel (bovine gelatin, glycerin, water).

• GTIN: 790011300052
• Manufacturer: Jarrow Formulas
• Categories: Back to School Supplements & EssentialsJarrow FormulasVitamin D
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Adults should take 1 softgel daily or every other day with a fatty meal, or as directed by a qualified healthcare professional. Store in a cool, dry place, out of reach of small children. Consult a doctor before use if you are pregnant, nursing, under 18, or have a medical condition, especially kidney stones or disorders, hyperparathyroidism, hypercalcaemia, lymphomas, or sarcoidosis. If any adverse effects occur, discontinue use.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, also called cholecalciferol, is a fat-soluble nutrient essential for healthy bones and immune health.

This form is the biologically active variant made in the skin when you're in the sun and is commonly used in supplements to support vitamin D status.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium and phosphorus absorption, supporting bone structure and mineralisation in line with EFSA guidance. It also plays a part in immune system function as part of normal physiology.

This combination of functions supports overall wellness through normal body system activity and maintenance of bone integrity.

This supplement isn't intended to diagnose, treat, cure, or prevent any disease.

Welzo chose Jarrow Formulas for this supplement because the brand fits our strict partner criteria, prioritising manufacturing excellence, transparency and consistency in quality. This brand is known for operating under current good manufacturing practices (cGMP) and requires its raw material suppliers to follow the same high standards, which resonates with our own commitment to safe and reliably produced products. Our evaluation recognised Jarrow Formulas’ approach to sourcing and purity, informed by collaboration with researchers and institutions worldwide, which supports a scientifically grounded product journey. For those seeking reassurance, their team’s emphasis on stable quality and allergen-friendly formulations further strengthens their market position. This brand was evaluated by Welzo's healthcare professionals for compliance with our rigorous testing protocols.

The UK market looks like a good fit for Jarrow Formulas, given their clear focus on cholecalciferol as the preferred form for vitamin D3, noted for its superior bioavailability compared with other forms. This mirrors our product strategy and supports a dependable customer experience. Our partnership rests on a shared commitment to quality, transparency and ongoing evaluation, making sure there’s consistency for customers who rely on Welzo for trusted supplementation.