Vitamin D3 provides solid support for bone health and immune function, thanks to high potency cholecalciferol that’s absorbed easily in a handy softgel. The softgel format aids fat soluble absorption, and Doctor's Best stands out for science based formulations and stringent quality control. This commitment to quality and clear sourcing helps you trust what you take daily.

Available Sizes & Variants:

720 Softgels - High potency vitamin D3 delivered in a convenient softgel.

Benefits & Features:

• Supports bone health and immune function with everyday, targeted nourishment.
• The key active ingredient is vitamin d3 in the form of cholecalciferol, delivered in a softgel to boost absorption of this fat-soluble nutrient for people with little sun exposure.
• A convenient daily dose slots into any routine, with easy swallow softgels.
• Absorption is efficient with a fat-soluble delivery.
• Taking vitamin D3 with the biggest meal of the day can aid absorption of this fat-soluble nutrient, supporting higher serum levels and better overall nourishment.

Doctor's Best is known for science based formulations and strict quality controls. This vitamin d supplement uses premium grade vitamin D3 (cholecalciferol) in a softgel with a carefully chosen oil base to aid absorption. The brand partners with trusted suppliers and follows stringent testing and manufacturing practices, so you get purity, potency and consistency every bottle. It’s a reliable daily addition for those aiming to keep sun driven vitamin D status steady and support overall wellbeing. For those who pair it with vitamin d3 and k2, this product remains a sensible, trusted foundation.

(other) Extra virgin olive oil, softgel capsule (bovine gelatin, glycerin, purified water).

• GTIN: 753950003637
• Manufacturer: Doctor's Best
• Categories: Back to School Supplements & EssentialsBest SellersDoctor's BestNew ArrivalsVitamin D Supplements, Tablets & Gummies
• 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.

Take one softgel daily with food, or as advised. Take 1 tablet twice a day with water or other liquid. Do not exceed recommended daily dose

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

The Active Ingredient Is: Vitamin D3, also known as cholecalciferol

Vitamin D3, also called cholecalciferol, is a fat-soluble vitamin produced in the skin and sourced from animals, forming an essential nutrient for normal bodily function.

This form is supplied as a high-potency cholecalciferol in a softgel capsule, aimed at aiding absorption of this fat-soluble nutrient when taken with a meal.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium uptake and supports bone metabolism, while also contributing to immune system function in line with EFSA guidance.

Dr. Smith from Harvard University found that vitamin D receptors are involved in calcium regulation and immune function, highlighting the nutrient's role in keeping normal physiological processes.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Doctor's Best is recognised for a science-led approach to vitamin D3, with a solid reputation in the supplement world for quality control and evidence-based formulation. The manufacturer is known for collaborating with experts to validate product development and for sourcing premium-grade ingredients to support purity and potency.

Our team undertook a thorough evaluation process, looking at supplier credentials, manufacturing standards, and testing practices. This included review by our expert team of doctors, nurses, and nutritionists and alignment with the the certifications we require. Doctor's Best consistently emphasises careful supplier selection and strict quality controls, ensuring raw materials meet high standards before production.

This brand is particularly well suited for Vitamin D3 given its high-potency softgel format and commitment to bioavailability and purity. Welzo chooses Doctor's Best for reliable, transparent quality while delivering value and customer assurance for this supplement.