Vitamin K2 Liquid, 1 fl oz
Size: 30 Milliliters
May be a fit for
- Adults seeking liquid menaquinone K2 for flexible dosing control
- Practitioners protocols requiring MK-4/MK-7 support for bone matrix proteins
- Those supporting calcium utilization with a swallowable-tablet-free option
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Thorne's Vitamin K2 Liquid delivers menaquinone (MK-4) in a concentrated liquid format, supporting healthy bone mineralization and cardiovascular function by directing calcium to where the body needs it most. Designed for those who prefer flexible dosing over capsules, it suits adults seeking targeted K2 support without fillers or artificial additives.
Why It's Worth Considering: Thorne's manufacturing standards are NSF Certified for Sport and consistently held to practitioner-grade quality benchmarks, and the liquid form allows precise dose adjustment, useful for individuals working with a clinician to dial in intake.
Product details
Who it may suit
May be a fit for
- Adults seeking liquid menaquinone K2 for flexible dosing control
- Practitioners protocols requiring MK-4/MK-7 support for bone matrix proteins
- Those supporting calcium utilization with a swallowable-tablet-free option
- Individuals pairing K2 liquid with vitamin D3 supplementation regimens
Considerations
- Taking warfarin/Coumadin (K2 counteracts warfarin — consult physician)
- Other vitamin K-dependent anticoagulants
- Note: K2 does NOT interact with non-vitamin-K blood thinners like Eliquis or Xarelto
Compatibility & interactions
Works Well With
Ask Gabriel for personalized stacking recommendations.
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
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A few useful answers.
Research & further reading
More category questions
What is the difference between K1 and K2?
Vitamin K1 (phylloquinone) is for blood clotting — abundant in leafy greens. Vitamin K2 (menaquinone) directs calcium metabolism — puts calcium in bones and keeps it out of arteries. Most people get enough K1 from diet but are deficient in K2, which is found mainly in fermented foods (natto, certain cheeses) and animal liver.
What is MK-7 and why is it the preferred form?
MK-7 is the most bioavailable and longest-acting form of K2, with a half-life of ~3 days (vs ~1 hour for MK-4). This means a single daily dose maintains therapeutic blood levels 24/7. MK-7 is derived from natto (fermented soybeans) and has the strongest clinical evidence for bone density and arterial health.
How much vitamin K2 should I take?
For general health with D3: 100-200mcg MK-7 daily. For osteoporosis: 180-360mcg. For cardiovascular calcification prevention: 180-200mcg. The dose should scale with your D3 intake — higher D3 doses require more K2 to handle the increased calcium absorption.
Can I take K2 if I'm on blood thinners?
If you're on warfarin/Coumadin: NO — K2 counteracts warfarin and will destabilize your INR. Consult your cardiologist. If you're on newer anticoagulants (Eliquis/apixaban, Xarelto/rivaroxaban, Pradaxa/dabigatran): these are NOT vitamin K-dependent, so K2 is safe. Always confirm with your prescribing physician.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.