Vitamin K2
supplementMK-7 · menaquinone
Vitamins
Research status · Dietary supplement
Dietary supplement; often paired with vitamin D3.
A fat-soluble vitamin discussed for bone and cardiovascular health, and commonly paired with vitamin D3. Anyone on blood thinners needs a clinician conversation before touching vitamin K in any form.
How it works
Activates proteins involved in directing calcium toward bone and away from soft tissue (osteocalcin, matrix Gla protein).
Commonly discussed use cases
- Bone health (discussed)
- Paired with vitamin D3
Supposed / potential benefits
- Supports normal calcium handling; long-term outcome evidence is still developing
Common side effects
- Well tolerated at typical doses
Warnings & contraindications
- Interacts with warfarin and similar anticoagulants — clinician conversation required
Typical timing considerations
With a fat-containing meal; often alongside vitamin D3.
Administration route
Oral
Questions to ask your clinician
- Am I on anything vitamin K interacts with?
- Is D3+K2 pairing relevant for me?
Commonly tracked in Reta
Tracking fields organize user-entered, clinician-directed routines — Reta never recommends or computes doses.
Sources
Track this in Reta
Beta members get a ready-made tracker for Vitamin K2 — schedule, dose log, reminders, and check-ins — for organizing a clinician-directed routine. Personal tracking is available to everyone during the Public Beta.
Reta is a tracking and education tool — not a medical provider. Nothing here is a diagnosis, treatment, prescription, or dosing recommendation. Peptides and medications should only be used under the direction of a licensed clinician. Talk to a qualified clinician before starting, stopping, combining, or changing anything. Many compounds below are not FDA-approved for human use; some are investigational or sold through unregulated channels where purity and dosing are not guaranteed.