Hugo Dover

"Very quick delivery. Used 3 times, each order arrived the next day before 12:00. Product quality is exactly as described."

Hugo Dover Verified
Elina Goulliard

"Reliable & original products, with fast next day delivery. Have been using Welzo for over a year now."

Elina Goulliard Verified
Elizabeth Moore

"Welzo is great, lots of support from customer service who are easy to get a hold of and quick delivery."

Elizabeth Moore Verified

Efectiv Nutrition Vitamin D3 with Vitamin K2 - 60 caps

2 Reviews
£19.85
Save 20% £24.89

Efectiv Nutrition vitamin D3 with vitamin k2 helps support bone health and immune function by helping calcium utilisation, and benefiting heart and artery health through a synergistic vitamin pairing.

Delivery 31 bought this week

Quantity

4+Save 5% 4Save 5%
Verified Authenticity
Money-Back Guarantee
Easy Returns

100% Money back guarantee, no questions asked

Secure Transaction

VISA Pay AMEX Pay
Excellent Trustindex

Fast UK delivery from £3.99

Order within for next-day delivery

As seen in

Efectiv Nutrition vitamin D3 with vitamin k2 helps support bone health and immune function by helping calcium utilisation, and benefiting heart and artery health through a synergistic vitamin pairing. Designed for everyday use, it blends D3 and K2 to help calcium management and arterial health, backed by Efectiv Nutrition's UK heritage and a strong commitment to quality. This straightforward daily capsule supports bone and heart health through a proven vitamin d3 and k2 synergy.

Available Sizes & Variants:

60 capsules - convenient daily dose for everyday support

Benefits & Features:

  • Helps bone health and immune function as a vitamin d3 supplement.
  • Helps steer calcium toward bones, supporting strength.
  • Consistent everyday intake helps keep strong bone mineral density and arterial flexibility, perhaps supporting long term mobility and cardiovascular health within a balanced lifestyle.
  • Designed for everyday use with a simple routine that fits busy lives.
  • Quality you can rely on, backed by a brand with a long standing UK presence.

Since 2013, Efectiv Nutrition has stood for quality and transparency, partnering with athletes to develop trusted supplements (a point we stand by). The brand uses premium ingredients and clear sourcing, with a strong commitment to safety. Research suggests the vitamin d3 and k2 pairing helps direct calcium to bones and supports arterial elasticity, aligning with our goal of practical, evidence backed health support. That k2 vitamin with d3 synergy is central to the strategy.

Vitamin D3 (Vegan), Vitamin K2 (as MK-7), Vitamin D3 (Vegan), Vitamin K2 (as MK-7)

GTIN
5060347312414
Manufacturer
Efectiv Nutrition
Best buy
6 to 24 months+

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take 1 capsule daily, preferably with a meal to enhance absorption. Store in a cool, dry place away from direct sunlight. Keep out of reach of children. Consult a healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition.

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

  Amount
Per Serving
%RI*
Vitamin D3 (Vegan) 100 µg 2000%
Vitamin K2 (as MK-7) 180 µg 240%

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, also known as cholecalciferol, is a fat-soluble vitamin essential for bone and immune health.

This form is commonly used in supplements to support normal calcium metabolism and overall nutritional wellbeing.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate calcium absorption, contributing to normal bone health and immune function in line with NHS and EFSA guidance.

Dr. Schwalfenberg of the University of Alberta found that vitamin D3 and vitamin K2 together may synergistically support bone density and arterial elasticity.

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

Efectiv Nutrition stands out as a familiar UK brand with a solid heritage dating back to 2013, known for athlete‑led product development and open ingredient sourcing. This foundation fits with our pledge to team up with manufacturers who prioritise safety, clarity and reliability in every formulation. The brand’s emphasis on premium ingredients and integrity across its range mirrors our own standards for quality and accountability, which are reinforced by our team of medical experts and the standards we enforce the standards we enforce.

For this vitamin D3 with vitamin K2, Efectiv Nutrition’s approach to clear information, robust quality assurance and a focus on safe, effective everyday use makes them a natural fit for Welzo. Their product philosophy supports the synergistic pairing of D3 and K2, which we recognise as a product‑specific strength for bone and cardiovascular health support in everyday wellness routines.

Part of the Welzo System™

Test, supplement, enhance, and move, all in one place.

31 bought this week
30-Day Money Back Guarantee
GMP Certified Facilities
Third-Party Tested
Vegan & Non-GMO
Rated Excellent
by 30,000+ Positive ReviewsTrustindex verified
Rated 4.8/5 by 27,000+ Customers
UKAS Accredited Labs
Free Next-Day Delivery Over £50
Science-Backed Formulations

Frequently Asked Questions

Everything you need to know about this product.

Third Party Tested
Trusted by 200,000+ Customers
Pharmaceutical-Grade Quality
UK-Based Customer Support