Swanson Vitamin D-3 helps support bone health and immune wellness, delivering a high potency dose that promotes healthy vitamin d3 levels. With flaxseed oil to aid absorption, this gluten free, non GMO soft gel fits easily into daily routines. Vitamin D-3 supports bone health and immune function, and this high potency dose makes it a reliable vitamin d supplement when sun exposure is limited.

Available Sizes & Variants:

250 soft gels – standard daily dose for steady intake.

Benefits & Features:

• High potency vitamin D3 supports bone health.
• Supports immune wellness by helping maintain healthy vitamin D status.
• Flaxseed oil aids absorption, helping you get the most from each capsule.
• Swanson's science backed quality since 1969 shines through every capsule, with USA production, meticulous ingredient sourcing, and a simple formula that fits into busy lifestyles while delivering reliable daily support.
• Gluten free and non GMO formula supports clean daily use.

Swanson Vitamin D-3 is built on Swanson's longstanding commitment to quality. Production happens in the USA with a simple flaxseed oil delivery that helps your body make the most of each soft gel. The brand's gluten free and non GMO ingredients offer a reliable option you can trust for daily use. Vitamin D-3 supports bone health and immune function, and the high potency dose is designed to raise vitamin D status when sun exposure is limited.

Soybean Oil, Gelatin, Glycerin, Purified Water

• GTIN: 87614113715
• Manufacturer: Swanson
• Categories: Back to School Supplements & EssentialsSwanson
• 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.

As a dietary supplement, take one softgel per day with food and plenty of water. Store in a cool, dry place. Do not take this product if you are pregnant or nursing. Consult your healthcare provider before use if you are taking any prescription medications or if you have a medical condition, especially hypercalcemia or kidney disorders. This product should be used under the supervision of a healthcare professional to monitor vitamin D blood levels. Do not exceed the recommended dose. Not intended for use by children.

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

The Primary Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, also known as cholecalciferol, is a fat-soluble vitamin key for everyday bodily functions connected to bone and immune health.

This form is usually sourced from animal-based or synthetic origins and is widely recognised for its role in keeping vitamin D status when sunlight exposure is limited.

What Vitamin D3 Does?

Vitamin D3 helps regulate calcium uptake, supports bone health and supports immune function in line with NHS and EFSA guidance.

Dr. Holick from Boston University found that vitamin D3 supplementation can impact bone mineral density and immune support, especially in people with limited sun exposure.

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

Contains Soy

To Use:
- Check product label for soy ingredients
- Avoid if allergic to soy
- If unsure, consult healthcare provider
- In case of allergic reaction, seek medical help

Vitamin Eas d-Alpha Tocopheryl Acetate: 268 mg

We selected Swanson as our go-to partner for Vitamin D-3 because of the brand’s long-standing commitment to quality and reliability in the supplement space. Swanson has established itself as a science‑backed choice since 1969, recognised for its focus on manufacturing standards and consistent product integrity. This heritage, combined with a clear dedication to plain‑spoken formulations, sets Swanson apart in a crowded market.

Swanson Vitamin D-3 is produced in the USA and is gluten‑free and non‑GMO, aligning with our quality expectations for purity and traceability. The product uses flaxseed oil to aid absorption, showcasing Swanson’s practical approach to formulation while maintaining straightforward, well‑defined ingredients. Our evaluation emphasised how these quality attributes underpin confidence in consistency and safety, a view reinforced by our quality certification process.

This brand was evaluated by our team of medical experts for alignment with Welzo’s standards and by our robust vetting criteria. We recommend Swanson for its proven track record, product quality, and clear fit for a high‑potency Vitamin D‑3 supplement, giving customers a trustworthy choice they can rely on.