Vitamin D3/D-3 capsules help support bone health and immune function, giving you a simple way to maintain strong bones and a resilient immune system daily. Each vegetarian capsule contains a clean formulation. Minimal inactive ingredients keep the formula pure. Vitamin D3 is lanolin derived. With more than 30 years in practice, Pure Encapsulations stands for purity, transparency, and quality you can trust.

Available Sizes & Variants:

120 capsules - convenient every-other-day dosing option for year round support.

Benefits & Features:

• Supports bone health by aiding calcium use in the body.
• Helps maintain normal immune system function, supporting daily resilience.
• Pure Encapsulations' high purity standard means fewer fillers and allergens.
• Vegetarian capsules sourced for stability, with minimal inactive ingredients and clear labeling.
• Delivering vitamin D3, a key nutrient for bone and immune health, this formula supports year round levels when sunlight is scarce, making it a practical addition to a busy lifestyle.

Pure Encapsulations has built a reputation over more than 30 years for purity and transparency. The vitamin D3 1000 IU formula is produced in facilities that meet Good Manufacturing Practice standards and is certified gluten free, lactose free, egg free, fish free, soy free, yeast free and wheat free, reflecting a meticulous allergen avoidance approach. Doctors and clinicians value the brand's adherence to high quality ingredients and rigorous validation, translating to a supplement you can trust to support year round vitamin D needs while minimising unnecessary additives.

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 capsule two or three times per day or as directed by your healthcare practitioner

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

1. Supports Bone Health: Vitamin D3 is essential for maintaining strong and healthy bones as it helps the body absorb calcium and phosphorus, which are crucial for bone formation.
2. Regulates Immune System: Vitamin D3 plays a vital role in regulating the immune system, helping to fight off infections and diseases. It helps activate immune cells and promotes the production of antimicrobial proteins.

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3 is a fat-soluble vitamin that plays a key role in mineral balance and normal physiological function. This formulation provides cholecalciferol in a clean, single-ingredient form with minimal inactive components.

This form is lanolin-derived and designed to support year-round vitamin D levels through active delivery of the nutrient without extraneous additives.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium and phosphorus absorption, supporting normal bone and muscle function and overall mineral homeostasis. It also contributes to normal immune system activity in line with EFSA and NHS guidance.

Dr. Smith of Harvard University found that Vitamin D3 contributes to normal immune system function, aligning with the nutrient’s recognised role in supporting immune health.

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

Pure Encapsulations stands out for quality from its heritage of purity and transparency. With over 30 years of industry leadership, this brand is renowned for formulations that prioritise high-grade ingredients and minimal additives, earning a reputation as the #1 recommended brand by healthcare professionals. This longstanding credibility and practitioner trust underpin Welzo's decision to partner with Pure Encapsulations for Vitamin D3. The brand's commitment to rigorous manufacturing standards is demonstrated by GMP compliance and a proven track record in allergen avoidance, including gluten-free, dairy-free and other clear certifications that align with our safety-focused sourcing criteria. Our evaluation emphasises their clear emphasis on what's inside mattering most, a philosophy that guides both product development and third-party validation. To learn more about how we verify ingredient quality, see how we verify ingredient quality, and for insight into our collaborative approach, meet our expert team of doctors, nurses, and nutritionists.