**Vitamin K2** at 100 mcg per capsule, using MenaQ7 — a patented MK-7 form with a half-life of roughly 96 hours. That long half-life means a single daily capsule keeps your levels steady, which is what makes MK-7 the preferred form for directing calcium into your bones and teeth instead of letting it accumulate in arteries.

100 mcg lands right at the low end of the studied range (90–200 mcg), so you're getting a clinically relevant dose for bone density support. If you're pairing this with a calcium or **vitamin D3** supplement, the K2 helps ensure that calcium goes where it should — a combination backed by solid clinical evidence.

At the higher end of the research, 180–200 mcg showed stronger effects on bone mineral density and arterial flexibility. If bone health is your primary goal, you could take two capsules daily to reach 200 mcg — the 120-count bottle gives you flexibility to adjust.