Vitamin K2
Fat-soluble vitamin essential for calcium metabolism and bone health. Works synergistically with Vitamin D to direct calcium into bones rather than arteries.
How it works
Mechanism of Action
Activates matrix Gla-protein (MGP) and osteocalcin, which regulate calcium deposition in bones and prevent arterial calcification.
Evidence-based uses
What Vitamin K2 Is Used For
MK-7 form preferred for longer half-life. Essential companion to Vitamin D supplementation for bone and cardiovascular health.
Clinical Evidence
MK-7 supplementation (180mcg/day) significantly decreased age-related bone mineral density decline and improved bone strength indices.
Safety
Interactions & Warnings
Vitamin K directly opposes the anticoagulant effect of warfarin. Any vitamin K supplementation requires careful INR monitoring and physician oversight.
Compare prices
Buy Vitamin K2 in Australia
5 products compared across Australian retailers. Sorted by price per serve.
| Product | Price | /serve | |
|---|---|---|---|
Best NOW Foods NOW MK-7 Vitamin K2 100mcg iHerb | $22.50 | $0.19 | Buy |
Life Extension Life Extension Super K Life Extension | $28.00 | $0.31 | Buy |
Garden of Life mykind Organics Vitamin K2 Garden of Life | $34.50 | $0.58 | Buy |
Blackmores Blackmores Vitamin K2 Chemist Warehouse | $21.99 | $0.73 | Buy |
Thorne Thorne Vitamin K2 (MK-4) Thorne | $36.00 | $1.20 | Buy |
Prices in AUD. Some links are affiliate links — we may earn a commission at no extra cost to you.
Should you take Vitamin K2?
Get a personalised supplement stack based on your health goals, age, medications, and preferences.
This information is for educational purposes only and is not intended as medical advice. Always consult a healthcare professional before starting any supplement. Evidence ratings are based on peer-reviewed clinical research. Individual results may vary.