Thorne Vitamin K2

Magnesium and vitamin K2 work as a team to direct calcium into bone tissue rather than soft tissue, and if you're already taking a magnesium supplement for muscle and recovery, K2 is the other half of that equation a lot of people miss.

Thorne's Vitamin K2 Liquid is built to complete the pairing that provides support for bone, heart, and blood vessel health. It delivers 1mg of MK-4 per drop in a metered liquid dropper that lets you dial in your own dose precisely.

Precise, flexible dosing – The self-dispensing top meters individual 1mg drops, so you can adjust your amount incrementally instead of being locked into a fixed capsule dose.

The most studied form for bone health – Vitamin K2 as MK-4 has been researched more thoroughly for bone health than vitamin K1, which is part of why this liquid isolates that specific form.

Travel-friendly format – The 1 fl oz bottle meets carry-on liquid size limits, useful if you're taking this consistently through race travel.

Vitamin K2 activates osteocalcin, a protein that helps bind calcium into bone tissue, and matrix Gla protein, which helps keep calcium out of arteries and other soft tissue. MK-4 is the specific form of K2 most studied for this bone-health role. The liquid format is suspended in medium chain triglyceride oil and preserved with mixed tocopherols, giving you a concentrated dose without needing to swallow a capsule.

How to Use Thorne Vitamin K2 Liquid

Dose: Take one drop up to three times daily, or as recommended by your health-care practitioner. Higher amounts used for specific bone health goals should be guided by a practitioner rather than self-directed.

If you take blood-thinning medication: Vitamin K directly interferes with anticoagulant drugs like warfarin (Coumadin), and concurrent use of vitamin K supplements with these medications should generally be avoided. Talk to your prescribing doctor before considering this product if you're on any anticoagulant.

Consult your healthcare provider before use if pregnant. This product is contraindicated for anyone with a history of hypersensitivity to its ingredients.