Vitamin D liquid is a vitamin d supplement that supports bone health and immune function, delivering vitamin d3 in a neutral MCT oil base for easy daily dosing. Thorne's approach blends purity, potency and transparency, offering professional grade quality you can trust. Every batch is tested for identity and potency, with allergen-conscious formulation and no soy, gluten or dairy additives.

Available Sizes & Variants:

1oz vitamin D liquid - Compact bottle for easy dosing.

Benefits & Features:

• Supports bone and muscle health.
• Vitamin d3 helps maintain immune function and calcium absorption, supporting stronger bones and a healthier immune response.
• Formulated in a medium chain triglyceride base with natural vitamin E, this vitamin D liquid is easy to mix.
• No soy, sesame oil, gluten, dairy or artificial additives keep it suitable for sensitive diets.
• Professional grade quality and trusted brand heritage, with rigorous testing and transparent sourcing, give you confidence that each drop delivers consistent potency and safety, backed by Thorne's research ethos.

Thorne is a trusted name in science driven supplements, renowned for purity and transparency. This vitamin d supplement is produced in state of the art facilities that comply with cGMP, with rigorous batch testing for identity, purity and potency. The allergen-conscious formulation avoids gluten, dairy, soy and sesame oil, and excludes artificial additives. Vitamin d3 (cholecalciferol) supports calcium absorption and bone health, while mixed tocopherols help stabilise the oil base. It’s a dependable vitamin d3 option for daily immune and bone support.

Vitamin D

• GTIN: 693749168010
• Manufacturer: Thorne
• Categories: Back to School Supplements & EssentialsNew ArrivalsPopular Supplement BrandsThorne Supplements
• 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 2 drops, one to three times daily, or as advised by your health professional. Turn the bottle upside down to dispense each drop. You can add it to food or mix it into beverages. Do not refrigerate. Take one tablet\, three times daily or as directed

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 that functions as a prohormone in the body and is involved in the regulation of calcium and phosphorus in the gut, supporting normal bone mineralisation and muscle function.

This form is delivered in an MCT oil base and undergoes standard activation in the body, with an emphasis on stability and purity to support daily physiological needs.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium absorption and supports normal bone and muscle function, with additional roles in immune system activity as described in EFSA and NHS guidance.

Scientific research suggests that adequate vitamin D status is associated with improved calcium absorption and bone health, alongside potential broader immune support as part of a balanced diet.

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

Thorne is our chosen partner for Vitamin D Liquid because this brand sits at the crossroads of scientific rigour and transparent quality. Thorne is widely regarded as a leader in the science-driven supplement space, celebrated for its commitment to clinical research, purity and transparency, and its products are trusted by healthcare practitioners and researchers alike. This reputation informs our decision to partner with a brand that consistently demonstrates professional-grade standards and traceable sourcing, aligned with Welzo’s emphasis on safety and integrity.

Thorne’s manufacturing philosophy centres on rigorous quality assurance, cGMP-compliant facilities, and batch testing for identity, purity and potency. Their allergen-conscious, additive-free formulations further reinforce confidence in product safety for a broad audience. In evaluating brands, our team values Thorne's proven track record in clinical settings and its industry standing, which sets it apart from competitors.

This brand is particularly well suited for Vitamin D Liquid, delivering high-potency D3 in a neutral MCT oil base with clear, professional-grade standards that translate to steady quality for customers. Welzo’s partnership was vetted by our medical experts for compliance with our ingredient quality criteria, and you can discover more about how we verify ingredient quality here and meet our team of medical experts.