Double Wood Supplements Vitamin D3 and K2 Liquid is a liquid vitamin d supplement that supports bone health, immune function, and heart health. This brand, Double Wood Supplements, is known for transparent sourcing and third party testing, with a certificate of analysis (COA) available so you know exactly what you’re taking.

Benefits & Features:

• Vitamin D3 supports bone health with a potent dose.
• Vitamin K2 in MK-7 form helps direct calcium to bones
• Together, vitamin D3 and MK-7 work synergistically to improve bone mineral density and reduce vascular calcification risk, giving you stronger bones and healthier arteries over time
• MCT oil base supports fat soluble vitamin absorption
• Manufactured in a US cGMP facility with third party testing

Double Wood Supplements Vitamin D3 + K2 Liquid is produced in the USA in a cGMP facility, with third party testing and COAs available for each batch. The formulation uses the highly bioavailable all trans MK-7 form of vitamin K2 (K2Vital) and a vegan, non GMO MCT oil base to maximise fat soluble absorption. The brand is known for transparency and rigorous quality checks, giving you peace of mind.

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.

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 supports bone health and immune system function. This liquid formulation uses a fat-based base to aid absorption of the nutrient, commonly provided as a readily utilisable form of vitamin D3.

This form is present within a matrix designed to optimise uptake via the fat-soluble pathway, helping to ensure efficient utilisation of the vitamin for bodily functions tied to mineral balance and immune regulation.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium absorption and supports bone mineralisation, while also contributing to immune system function in line with EFSA guidance.

Dr. Holick of Harvard University found that vitamin D3 supplementation can support bone health and immune function, illustrating the nutrient’s role in maintaining healthy physiological processes.

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

Double Wood Supplements is a trusted name in the supplement industry, recognised for transparent sourcing, testing, and a consistent focus on quality. This brand’s reputation for clarity and reliability aligns with Welzo’s commitment to evidence-based wellness and expert curation.

The product leverages a rigorous quality framework, with manufacturing in a cGMP-certified USA facility and third-party testing to verify purity and potency. Certificates of Analysis and independent testing results are available to validate ingredient quality, reinforcing the brand’s standing in a health-conscious community. For our team of medical experts, this alignment with our ingredient quality and purity standards is a key reason to partner with Double Wood Supplements.

This brand stands out among competitors through its transparent practices and clinically relevant ingredient choices, making it a natural fit for a vitamin D3 plus K2 formulation designed to support bone health, immune function and cardiovascular health. Welzo’s evaluation process, supported by our expert team, led us to recommend Double Wood Supplements for the British market. our team of medical experts and our ingredient quality and purity standards.