It’s late summer in Bedford, and the sun is high, the air is warm, and the days are long. As we enjoy the season, it’s a good time to think about how our bodies are working, especially when it comes to something as fundamental as bone health. Many of our customers ask about k2 with d3 bone support, and how much of it is needed for optimal function. While the science around this is still evolving, there are some key points to consider when choosing supplements that include both vitamin K2 and D3.
What the research says
Vitamin K2 and D3 are often taken together because they work in tandem to support bone health. Vitamin D3 helps the body absorb calcium from the diet, while vitamin K2 ensures that calcium is directed to the bones and not deposited in the wrong places, such as arteries or soft tissues. A 2025 study on vitamin K intake in the Mexican population highlights the importance of accurately measuring vitamin K2 levels, as it plays a role in multiple physiological processes. However, the study does not provide specific dosage recommendations for bone support.
Research into the interaction between K2 and D3 is ongoing, and while there is no definitive answer on the exact amount needed for optimal bone support, some studies suggest that higher intakes of both nutrients may be beneficial, especially for those who are at risk of bone loss. It’s important to note that these findings are not yet widely accepted in the UK, and more research is needed to confirm the best dosages for different groups of people.
One of the challenges in determining the right amount of K2 with D3 is that individual needs can vary based on factors like age, diet, and sun exposure. For example, people who spend a lot of time indoors or who live in areas with limited sunlight may need more vitamin D3, which in turn may influence the amount of K2 required. However, there is currently no clear consensus on what that amount should be, and more human studies are needed to provide firm guidance.
How to choose
When looking for a supplement that includes K2 with D3, it’s important to pay attention to the form and strength of the ingredients. For example, Calcium/Magnesium/Vitamin D3 with Vitamin K2 Tablets offer a combination of nutrients that may be useful for those who are looking for a more comprehensive approach to bone support. These tablets are a good option for people who prefer a single supplement that includes multiple nutrients.
Another thing to consider is the source of the K2. Some products use menaquinone-7 (MK-7), which is a form of K2 that is well absorbed by the body. Source of Life® Garden Vitamin K2 120mcg Capsules are a vegan option that provides a specific dose of K2, which may be suitable for those who follow a plant-based diet. It’s always a good idea to check the label to see what form of K2 is used and what the dosage is.
It’s also worth considering the other ingredients in the supplement. For example, Calcium & Vitamin K2 60 capsules include calcium, which is another important nutrient for bone health. However, it’s important to remember that calcium alone is not enough, and it works best when combined with K2 and D3. If you’re unsure about which product to choose, it’s always a good idea to speak to a member of our team in the shop for guidance.
If you take any medication or are pregnant, please speak to your GP or pharmacist before starting any new supplement. We are always happy to help you find the right product for your needs, and we can answer any questions you may have about the ingredients or how to use them.