Vitamin D3 is a vitamin d supplement that helps support bone health and calcium metabolism, so you can move with confidence and feel steadier day to day.

Available Sizes & Variants:

100 capsules - convenient daily dose for ongoing support.

Benefits & Features:

• Supports bone health and calcium metabolism.
• Key active ingredient, vitamin d3, supports calcium absorption and bone health, while the capsule design avoids common allergens, making it suitable for many dietary needs.
• Free from dairy, eggs, gluten and other common allergens to suit sensitive diets.
• Convenient capsules are easy to swallow and taken once daily.
• A vitamin d supplement supports immune function and overall wellbeing.

GI ProHealth's Vitamin D3 is designed with everyday health in mind. Each capsule delivers vitamin D3 to support calcium metabolism and bone health, while the vegetarian capsule keeps things easy to swallow. The formula is casein free, egg free, gluten free, nut free, shellfish free, soy free and wheat free, making it suitable for a wide range of dietary needs. Built on a commitment to quality, this vitamin d supplement fits neatly into a daily routine.

(other) Microcrystalline cellulose, vegetarian capsule, hydroxypropyl methylcellulose, water, L-leucine, and silicon dioxide.

• GTIN: 828054099081
• Manufacturer: GI ProHealth
• Categories: Back to School Supplements & EssentialsGI ProHealthNew 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 capsule daily with food or as advised by your healthcare provider. Add 2.5ml of elete Electrolyte Add-Intm (a capful from the 25ml pocket bottle) to 1 litre of water\, juice or any beverage and mix by shaking or stirring. More or less may be added to suite taste and performance. Consume as needed to satisfy thirst.

Add elete to water\, juice\, or any beverage and mix by shaking or stirring. Please refer to the mixing chart for precise dosing and mixing instructions. When mixed as directed with pure water\, elete makes electrolyte water that tastes like water. Use purified or spring water for the best-tasting\, pure electrolyte water. Lemon or lime juice can be added for a nice light flavour.

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

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, also called Cholecalciferol, is a fat soluble vitamin important for supporting normal calcium metabolism and bone health.

This form is the natural vitamin D used in supplements to help keep adequate vitamin D status; it is often sourced as Cholecalciferol in dietary goods.

What Does Vitamin D3 Do?

Vitamin D3 helps with calcium absorption and bone maintenance, supporting normal skeletal function and structure as part of general health guidelines.

Regular intake helps support the body's calcium metabolism and bone health pathways, contributing to everyday vitality and physical function over time.

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

GI ProHealth adopts a science‑led approach to vitamin D3, and this partnership mirrors our commitment to supplying formulations that align clearly with those who prioritise bone health and dietary flexibility. The GI ProHealth Vitamin D3 product is formulated to deliver 1000 IU per capsule while maintaining a casein‑free, egg‑free, gluten‑free, nut‑free, shellfish‑free, soy‑free and wheat‑free profile, making it particularly suitable for a broad range of dietary needs.

GI ProHealth has built a solid reputation in the vitamin D3 space, with a heritage focused on practical everyday support for healthy living. This brand stands out thanks to its transparent product design and a focused approach to essential nutrients, which we recognise as important when curating a British market‑ready portfolio. This brand was evaluated by Welzo's healthcare professionals for compliance with the certifications we require.

Our selection process focuses on rigorous quality standards and third‑party validation where available, and a product fit that complements Welzo’s expert guidance. GI ProHealth aligns with this approach, and we are confident in its suitability for customers seeking a reliable Vitamin D3 option. For the team perspective on suitability, see Welzo's medical team and our quality standards guidance linked above.