d35
| Supplement form | Bioavailability | Duration of activity | Vegan? | In Neutrient D3 + K2? |
|---|---|---|---|---|
| Vitamin D2 (ergocalciferol) | Lower | Shorter | Yes | No |
| Vitamin D3 from lanolin | Higher | Longer | No | No |
| Vitamin D3 from algae | Higher | Longer | Yes | ✔ Yes |
| Vitamin K2 as MK-4 | Good | ~3–6 hours | Depends | No |
| Vitamin K2 as MK-7 | Excellent | ~72 hours | Yes | ✔ Yes |