Vitamin K2
Moderate evidenceAlso known as: menaquinone, MK-7
A fermentation-derived form of vitamin K known as menaquinone-7. Commonly taken alongside vitamin D3.
What it is used for
Contributes to the maintenance of normal bones.
Dosage
Supplement doses range from 45 µg to 200 µg daily.
Safety notes
Speak to a doctor if you take anticoagulants — vitamin K affects clotting.