Question 1

How many servings is in the 1 oz bottle?

Accepted Answer

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!

Question 2

Is the K2 the MK4 version?

Accepted Answer

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."

Question 3

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.

Accepted Answer

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.

Question 4

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

Accepted Answer

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

ASIN	B000FGWDTK
ASIN	B000FGWDTK
Age Range Description	Adult
Allergen Information	Gluten Free
Best Sellers Rank	#598 in Health ( See Top 100 in Health ) #18 in Vitamin K Supplements
Brand Name	THORNE
Color	red
Customer Reviews	4.4 4.4 out of 5 stars (450)
Customer reviews	4.4 4.4 out of 5 stars (450)
Diet Type	Gluten Free
Dosage Form	Liquid
Flavor	Unflavored
Is Discontinued By Manufacturer	No
Item Dimensions	32 x 32 x 85 millimeters
Item Form	liquid
Item Weight	1 Milligrams
Item model number	Primary supplement type: Vitamin K2
Manufacturer	Thorne Research
Manufacturer	Thorne Research
Manufacturer Part Number	K170-R
Material Type Free	Dairy Free
Model Name	Primary supplement type: Vitamin K2
Model Number	Primary supplement type: Vitamin K2
Number of Items	1
Primary Supplement Type	Vitamin K2
Product Benefits	Bone Health Support
Specific Uses For Product	Bone & Joint
UPC	693749170013 885106647898 400792103055 765857717623 754748034383
Unit Count	30.0 Milliliters

THORNE Vitamin K2 - Concentrated Vitamin K2 (as MK-4) Liquid Supplement - Supports Bone, Heart & and Blood Vessel Health* - Third-Party Certified - Gluten, Dairy & Soy-Free - 1 Fl Oz

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