Vitamin D3® + K2— The Supplement the UK Can't Afford to Skip.
5,000IU D3 and 133% RDA Vitamin K per capsule. Immune function. Muscle function. Bone health. One capsule daily. Stronger bones. Everyday immunity. One simple capsule.
Your daily dose of sunshine—now made even better.
Vitamin D is essential for strong bones, healthy muscles and everyday immune support—but in the UK, getting enough from sunlight alone isn’t always easy.
Bio-Synergy Vitamin D3 + K2 combines a powerful 5,000 IU of vitamin D3 with 100 µg of vitamin K2 in one convenient capsule.
Vitamin D helps your body absorb calcium, while vitamin K helps support its use within your bones. Together, they make a smart daily combination for anyone looking after their strength, mobility and long-term bone health.
One capsule a day. A full 90-day supply. No unnecessary complication.
Best for
People who get limited sunlight
Supporting bone health as you age
Active people looking after muscles and mobility
Anyone wanting D3 and K2 in one simple capsule
Everyday use during the darker winter months
Why it works
Vitamin D3 — Cholecalciferol (5,000IU — 2,500% NRV) Contributes to normal immune function, muscle function and the maintenance of normal bones.
Calcium (175mg — 22% NRV) Works with Vitamin D to support normal bone density and mineralisation.
Phosphorus (135mg — 20% NRV) Essential mineral for bone health and energy metabolism.
What makes it different
5,000 IU high-strength vitamin D3
Now with 100 µg of vitamin K2
Supports strong bones and healthy teeth
Helps maintain normal muscle function
Supports everyday immune health
Helps your body absorb and use calcium
Ideal during winter or limited sun exposure
One capsule daily
90-day supply
How to Use
Take one capsule daily with a meal, ideally one containing some healthy fats.
Since 1997 Bio-Synergy has been setting standards in sports nutrition. Certified B Corporation®. Made in the UK. Independently tested. Used by elite and professional athletes for over 25 years.
Take one capsule daily with water. Do not
exceed the recommended daily dose.
Why you'll love it
✓ KEEPING BONES STRONG ✓ SUPPORTING EVERYDAY IMMUNITY ✓ MAINTAINING HEALTHY MUSCLE FUNCTION ✓ GETTING MORE FROM YOUR CALCIUM ✓ STAYING SUPPORTED WHEN SUNLIGHT IS LIMITED ✓ JUST ONE CAPSULE A DAY
Did You Know?
Vitamin D3 is essential for calcium absorption and maintaining healthy bones, as well as supporting immune function.
Is This Product Right for You?
Perfect for anyone looking to support their bone health and immune system, particularly those with limited sun exposure.
Discover More
Explore our range of essential vitamins and supplements including Vitamin C Capsules and Immune Booster Capsules.
Quality Assured
Produced in the UK with high-quality ingredients to ensure effective and safe supplementation.
How to Take
Take one capsule daily with water. For best results, incorporate into your daily routine to support bone health and immunity.
Storage
Keep the container sealed, out of direct sunlight, and out of reach of children. Best before see base.
