How many servings is in the 1 oz bottle?

I noticed a large discrepancy in the two answers already given, so I'll try to clarify the confusions. The label states (not "drops" but "servings") "Servings Per Container: 80" and also states "Serving Size: Fifteen Drops" and "Fifteen Drops Contain: Vitamin K (as Vitamin K2 Menatetrenone) 15mg". So at the rate of 45mg/day, the 1200 drops/bottle would indeed last 26+ days or about a month; however the math at 5 drops/day would last 240 days or about 8 months. While some may use as little as 1 or 2 mg/day, at my actual use rate of 7drops/day a bottle has consistently lasted just under 6 months which fits with the math that works out to 171+ servings. Hope this helps!

Is the K2 the MK4 version?

In response to another question: "Both vitamin K2 supplements are nearly completely absorbed, with peak serum concentration at 2 hours for MK-4 and 4 hours for MK-7 after intake. Originally, the most compelling research was on high-dose MK4. More recently, some interesting MK7 research has been conducted and published. Therefore, Thorne is working on a combination product that should be available in 2016. Any studies looking at increased bone density are typically long range studies."

To cover all bases, wouldn't combined mk-4/mk-7 be best? considering in one mk-7 study (180 mcg daily) it took up to 3 years to see density improve.

Both vitamin K2 supplements are nearly completely absorbed, with peak serum concentration at 2 hours for MK-4 and 4 hours for MK-7 after intake. Originally, the most compelling research was on high-dose MK4. More recently, some interesting MK7 research has been conducted and published. Therefore, Thorne is working on a combination product that should be available in 2016. Any studies looking at increased bone density are typically long range studies.

What is the expiry date on the bottle? In other words, what is the shelf life?

My last two bottles had expiration dates about a year out.Good stuff--helped repair my teeth--good luck.

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💪 Unlock elite heart & bone support with every drop!

NATURAL INTEGRITY - No artificial colors, flavors, or sweeteners—only pure, naturally sourced ingredients for optimal absorption.
PURE CLEAN FORMULA - Free from gluten, GMOs, artificial preservatives, dairy, soy, and common allergens—clean nutrition you can trust.
ELITE ATHLETE APPROVED - Chosen by 100+ pro sports teams and U.S. National Teams, ensuring top-tier quality and efficacy.
PRECISION DOSAGE POWER - Each drop delivers a potent 1 mg of Vitamin K2 (MK4) for targeted health benefits.
HEART VESSEL GUARDIAN - Clinically trusted formula supports cardiovascular wellness and healthy blood flow.

THORNE Vitamin K2 Liquid delivers a concentrated 1 mg dose per drop of MK4, a vital nutrient for maintaining bone strength and cardiovascular health. Crafted with pure, allergen-free ingredients and trusted by professional athletes and healthcare practitioners alike, this supplement ensures clean, effective support for your active, health-conscious lifestyle.