Swanson Vitamin D3 High Potency helps bone health and immune support, and you decide on reliable quality from a brand with more than half a century behind it. Each capsule provides vitamin D3, the body's preferred form of this nutrient, in a strong potency dose meant to support everyday wellness. Swanson notes its supplements are produced in GMP-certified facilities and tested for purity and potency, a quality standard the brand has upheld for more than five decades

Benefits & Features:

• Supports healthy bones and teeth, helping you stay strong for everyday activities.
• Keeps immune function supported, especially when days are shorter.
• Simple, once daily capsule that slots into most routines without hassle.
• Vitamin D3 supports immune function and bone health through daily use, and the practical dose helps you hit the recommended intake without complex planning or meals.
• Active ingredient vitamin D3 remains the body’s preferred form, aiding absorption and daily sufficiency.

Swanson Vitamin D3 High Potency reflects the brand’s long standing commitment to quality and transparency. The product uses cholecalciferol, the body’s preferred vitamin D form, which supports easy absorption. Swanson is made in GMP certified facilities and has a fifty year track record of quality. Dr. Holick of Boston University notes that a daily dose around 1,000 IU helps maintain adequate vitamin D levels, especially when sun exposure is limited.

Other Ingredients - Rice flour, Gelatin (Bovine/Porcine), Modified food starch, Sucrose, Sodium ascorbate, Medium-chain triglycerides, Silica, dl-alpha tocopherol.

• GTIN: 87614112411
• Manufacturer: Swanson
• Size: 30 Capsules
• Categories: Back to School Supplements & EssentialsBest SellersNew ArrivalsSubscribe & Save ProductsSwansonVitamin 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 capsule daily with food and water as a dietary supplement.

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

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, or cholecalciferol, is a fat‑soluble nutrient essential for normal body function and bone health support.

This form is the body’s preferred vitamin D source and is commonly sourced as a pure cholecalciferol ingredient to support daily health needs.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium absorption and supports immune system activity in line with EFSA guidance. Dr. Bischoff-Ferrari of Harvard University found that vitamin D supplementation can improve musculoskeletal strength and reduce fall risk in older adults.

Through its role in mineral metabolism, vitamin D3 contributes to the maintenance of normal bones and teeth and supports overall immune function, aligning with recognised health guidance.

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

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Swanson is recognised for a long-standing heritage in delivering reliable nutritional supplements, backed by a rigorous quality ethos that guides every product. This brand’s commitment to GMP-certified manufacturing facilities and comprehensive in-house and independent purity and potency testing aligns with our standards, demonstrating a steady track record of quality and consistency across decades. This brand has earned trust through practical, science-aligned formulations and clear transparency about their processes, which we reflect in our partner selection.

Swanson Vitamin D3 High Potency fits perfectly with Welzo’s UK market focus and daily health maintenance guidelines, offering a reliable 1,000 IU dose in a format that supports convenient daily use. Our evaluation process, conducted by our expert team of doctors, nurses, and nutritionists and anchored in the standards we enforce, prioritises brands with proven manufacturing excellence and robust testing. This brand therefore stands out as a trusted partner for delivering safe, well-supported vitamin D supplementation to our customers.