Essential D3/K2

High potency daily vitamin for immune + more

Vitamin D is essential to virtually every aspect of our health, including the normal function of our immune system, muscle performance, and maintenance of healthy bones and teeth.

90% of absorbable Vitamin D3 comes directly from sunlight, however, due to limited sun exposure in the UK, many people may struggle to maintain optimal levels year-round. From October to March (and often beyond), all adults are advised to supplement Vitamin D3. 

This formula from ARTAH provides Vitamin D3 in its most bioavailable form (cholecalciferol), helping to support effective absorption and utilisation within the body. It is paired with Vitamin K2 (MK-7), an important cofactor that works synergistically with Vitamin D3. 

Vitamin K2 helps support the body’s natural calcium regulation by directing calcium to where it is needed most, such as bones and teeth, while helping to prevent unwanted calcium deposition in soft tissues. This complementary action supports both skeletal strength and cardiovascular health.

Together, Vitamin D3 and K2 provide a well-rounded approach to foundational health, supporting immune resilience, bone maintenance, muscle function, and long-term wellbeing as part of a balanced daily routine.

Who should take Essential D3/K2?

Anyone who wants to support their health and wellbeing. Public health guidelines suggest that adults in the UK supplement with Vitamin D3 throughout autumn and winter months.

When will I notice a difference on D3/K2?

Every body is different and it depends on your starting point. If you are using blood tests to determine serum changes, we recommend waiting eight weeks before testing again. 

Individuals with lower levels of Vitamin D may start to feel the benefits more quickly than others. Since many of the effects of Vitamin D are not immediately tangible (for example, bone health and cell division), you may not notice anything whilst you are taking it, however, maintaining optimal Vitamin D levels is essential for long term health. Prevention is better than a cure!

What are some of the signs I may be lacking in Vitamin D?

Common signs of insufficient levels of Vitamin D3 include muscle pain and weakness, fatigue, bone pain, low mood, hair loss, difficulty sleeping, poor immunity and more.