Day Lewis Vitamin D is a high strength vitamin D3 tablet that helps support bone strength, immune health, and calcium absorption in daily use. The star ingredient, cholecalciferol, is the active form the body uses most efficiently. This long standing heritage and rigorous quality standards make it a product you can trust.

Available Sizes & Variants:

30 tablets vitamin D - convenient daily dose for maintaining levels.

Benefits & Features:

• Delivers a high strength dose to support bone health and calcium absorption.
• Supports immune health, helping the body stay resilient through everyday challenges.
• Daily tablet form makes dosing simple.
• Quality manufacturing and careful sourcing ensure consistent purity, potency, and reliable daily support.
• Day Lewis has a long heritage in producing trusted supplements, with rigorous quality checks and stable potency that you can rely on year after year.

Day Lewis Vitamin D relies on the body’s preferred form, cholecalciferol, with a robust 2500 IU per tablet to help address deficiency. The brand is known for its heritage in delivering pure, high quality supplements with rigorous quality checks and stable potency. This product supports bone strength, immune health, and calcium absorption, offering a straightforward daily option for maintaining healthy vitamin D status.

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, or cholecalciferol, is a fat‑soluble nutrient essential for normal bones and immune function.

This form is the body's preferred active form and is commonly taken as a supplement to help keep vitamin D status solid.

What Does Vitamin D3 Do?

Vitamin D3 helps with calcium absorption and keeping bones healthy, and it plays a part in immune system function in line with NHS and EFSA guidance.

Beyond bone and immune roles, it helps with normal muscle function and overall health as part of a balanced diet.

Welzo is not liable for discrepancies on the website. Check product packaging for exact information.

• GTIN:
• Manufacturer: Day Lewis
• Size: 2500iu / 30
• Categories: Back to School Supplements & EssentialsDay Lewis ProductsJoint Pain Relief
• Best buy: 6 - 24 months+

UK Shipping:

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

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.

Welzo is not liable for allergen information. Always follow the directions/ingredients on the product packaging to ensure proper use.

Day Lewis brings a science-led approach to vitamin D supplementation, emphasising the active form cholecalciferol and a high-strength dose designed to address vitamin D deficiency. This aligns with Welzo's commitment to evidence-based, well‑formulated products and our focus on sourcing brands that prioritise potency and purity for effective daily support.

This brand’s product provides Vitamin D3 at 2500 IU per tablet, a high-dose option that is commonly prescribed or monitored for deficiency conditions, as supported by clinical guidance cited in the research facts. Such dosing, with the body’s utilisation of the active form, mirrors our product selection priorities and strengthens confidence in reliability and consistency. For added assurance, this brand is evaluated by our expert team of doctors, nurses, and nutritionists as part of our ongoing supplier vetting and quality confirmation.

We stock Day Lewis for its product specificity—focused on pure cholecalciferol with minimal active ingredients—paired with our rigorous testing protocols and a clear commitment to regulatory compliance, which are detailed on our rigorous testing protocols. This combination delivers strong value and customer confidence in a reliable vitamin D option.