**Vitamin D3** at 5,000 IU per capsule puts you right at the top of the clinically studied range for maintaining healthy blood levels, supporting bone density, and bolstering immune function. Paired with **Vitamin K2** at 180 mcg — near the ceiling of the effective range — this combination ensures the calcium your body absorbs actually gets directed to your bones and teeth rather than building up in your arteries.

The K2 here uses MenaQ7, an MK-7 form with a half-life of roughly 96 hours, meaning a single daily capsule keeps it active in your system for days. That long-lasting activity is what makes MK-7 the preferred form for sustained bone and cardiovascular support. The capsule directions suggest taking it with a fat-containing meal, which matters since both vitamins are fat-soluble.

At 5,000 IU, you're above the official tolerable upper limit of 4,000 IU, which is safe for most adults but worth discussing with your doctor if you haven't tested your blood levels recently.