In brief: Vitamin K supports normal blood clotting and bone metabolism. K2 drops provide menaquinones such as MK-4 or MK-7, but they are not a general treatment for vascular calcification.
MK-4 and MK-7
| Form | Interpretation |
|---|---|
| MK-4 | Shorter persistence, different dosing ranges |
| MK-7 | Longer persistence, often used in microgram doses |
| Drops | Convenient dosage form |
| Combination products | Vitamin D and K should be assessed separately |
Who needs K2?
There is no universal requirement for supplementation. Deficiency is uncommon in healthy adults.[1]
Anticoagulants
Vitamin K antagonists such as warfarin or phenprocoumon can be affected by changes in vitamin K intake.[1]
FAQ
Must K2 always be taken with vitamin D?
No.
Does K2 clean arteries?
That is not established.
Are drops better than capsules?
Not automatically.
Is K2 harmless with warfarin?
No.
Conclusion
K2 drops can provide vitamin K, but should not be equated with proven vascular or bone treatment.
