Product Description
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.
- Gluten free
Supplement Facts
80 Servings
Serving Size: 15 Drops
Serving Per Container: 80
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* | ||
| Vitamin K (as K2 (MK-4)) 15mg | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
We want you to love the nutrition you purchase from The Feed. We also know that sports nutrition is personal - a flavor, texture, supplement, or fueling product that works perfectly for one athlete may simply not be the right fit for another.
That’s why we offer our Always Happy Promise.
If you try a nutrition or consumable product and you’re not satisfied with it, let us know within 30 days of delivery and our Athlete Experience team will work to make it right.
Thorne Vitamin K2 FAQ's
Everything you need to know about Thorne Vitamin K2.



Magnesium and K2 work as a team directing calcium into bone instead of soft tissue. If you're already on magnesium for muscle and recovery, K2 is the piece a lot of people miss.
The metered dropper delivers precise 1mg drops, so you can adjust your amount incrementally instead of a fixed capsule dose. It's also travel-friendly at 1 fl oz for race travel.
MK-4 is the form of K2 most studied for bone health, which is why this formula isolates it rather than using K1.
One drop up to three times daily, or as directed by your health-care practitioner. Higher amounts for specific goals should be practitioner-guided, not self-directed.
Yes. Vitamin K directly interferes with blood thinners like warfarin, so talk to your prescribing doctor first if you're on any anticoagulant. Also consult your provider if pregnant.