Doctor's Best Vitamin D3

Vitamin D3 (as cholecalciferol)

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take 1 softgel daily with food, or as recommended by a nutritionally informed physician. Store in a cool, dry place. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3 is a fat-soluble vitamin that helps with healthy bone and immune function, and is part of everyday wellbeing. This version, cholecalciferol, is the bioactive form your body uses and is converted into an active hormonal form to help balance calcium and phosphorus metabolism.

The product uses olive oil to assist absorption, and the ingredient helps calcium uptake and immune modulation to support everyday health and general well-being.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium absorption, supporting bone mineralisation and a healthy immune system in line with NHS and EFSA guidance.

In addition, the vitamin contributes to normal immune response and overall maintenance of physiological function as part of a balanced diet and lifestyle.

This product isn’t intended to diagnose, treat, cure, or prevent any disease.

Doctor's Best takes a science-backed approach to nutrition, which aligns with Welzo's commitment to evidence-based supplementation. This brand emphasises science-based nutrition and uses high-absorption formulation choices, such as olive oil in softgels to support absorption, while offering a non-GMO, gluten free and soy free Vitamin D3 product. This heritage of rigorous formulation sits at the heart of why we partner with Doctor's Best for this supplement.

Doctor's Best has earned trust in the industry through its specialised focus on delivering effective, bioactive nutrients. Our evaluation confirmed their clear product positioning in the vitamin D category, with a straightforward, robust offering that fits UK consumer expectations for purity and transparency. We selected Doctor's Best because their approach to quality and formulation mirrors Welzo's standards, including our emphasis on safety and consistency, as reflected in our internal review process and alignment with the certifications we require. our expert team of doctors, nurses, and nutritionists examined compatibility with Welzo’s quality framework and the certifications we require for this category.

Trust in this partnership comes from a shared commitment to scientifically grounded, well-controlled manufacturing practices, ensuring this Doctor's Best Vitamin D3 is a dependable choice for customers seeking reliable daily support.