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Jarrow Formulas MK-7, 90 mcg, 60 Count
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202 of 215 people found the following review helpful
MK-7 (Menaquinone-7) is an enhanced bioactive form of Vitamin K2 made from the soy product natto by a special process of fermentation. Research has discovered that this form of Vitamin K is far better absorbed by the body than K1, which is found in vegetables such as spinach.

I personally use this brand, because Jarrow is a highly reputable company. The suggested use for this product is one softgel per day or as directed by your qualified health care provider. I personally take one of these softgels per day. It can be taken with food or on an empty stomach.

MK-7 helps promote bone health by helping the body naturally--with no side effects--to build bone, which is an essential factor in preventing osteoporosis.

Let me pause here to say that this supplement stands in strong contrast to Big Pharma's "bone-protecting" drugs. They, in fact, do not build bone. The drugs doctors most often prescribe for a DEXA-based diagnosis of "osteopenia" are from a class called "antiresorptives." These drugs attempt to slow bone loss by decreasing the rate of absorption of bone by osteoclast cells. Examples include: bisphosphonates (Fosamax, Boniva, Actonel, Reclast), calcitonin (Fortical and Miacalcin), estrogen therapy or hormone therapy (Premarin, Prempro), and estrogen agonists/antagonists (Evista). There's a huge problem with these drugs, over and beyond their dangerous side effects. Stopping resorption works entirely against the body's bone-maintenance system. In a natural state (untampered with by drugs), there is a constant uptake by osteoclast cells of old bone tissue (resorption) which triggers a signal to the osteoblast cells to create new bone tissue. Both sides of the equation are essential for new bone to be created. In short, if there is no resorption of old bone by osteoclasts, then the osteoblasts will NOT make any new bone. This means that if I take bisphosphonates my body stops making any new bone. My conclusion is this: Yes, during the relatively short-term testing of two years or less Big Pharma has done on these drugs, it has concluded and proclaimed that bone is spared, rather than lost. Unfortunately, due to how the body works, this type of medication cannot prevent osteoporosis over the long term. In fact, tragically, it is actually creating a form of osteoporosis, which is defined as a body filled with old, fragile bone tissue that is susceptible to breakage. Recent research has also indicated that the bisphosphonates in particular can create osteonecrosis (bone death) of the jaw and spontaneous femur fractures. There are major class-action lawsuits going forward on this health tragedy right now.

Research has indicated that the bone growth that MK-7 promotes can be additionally augmented by taking it in combination with Vitamin D3. Multiple studies have demonstrated synergistic benefits when vitamin MK-7 and D3 are combined. There is enhanced osteocalcin accumulation in bone cells which leads to increased bone mineral density. Both MK-7 and Vitamin D3 encourage calcium uptake where it needs to go, to bones and teeth, not to where it should not go, the walls of your arteries.

Speaking of arteries, MK-7 promotes cardiovascular health by helping to maintain arterial elasticity due to the function just described, of encouraging calcium in the body to go where it belongs, not where it does not, forming plaque in blood vessels.
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75 of 80 people found the following review helpful
TOP 50 REVIEWERon May 8, 2013
*****
Here is a side-by-side comparison of nine leading Vitamin K-2 supplements: Innovix Labs Full SpectrumVitamin K2, Nutrigold Vitamin K2 (MK-7) Gold, Doctor's Best Natural Vitamin K2, Life Extension Super K with Advanced K2 Complex, Now Foods Vitamin K-2 (MK-4), Now Foods MK-7 Vitamin K-2, Jarrow Formulas MK-7, Solgar Natural Vitamin K2 (MK-7), Thorne Research Vitamin K2 Liquid, and Carlson Labs Vitamin K-2 (MK-7).

Vitamin K is one of the fat-soluble vitamins, along with A, D and E. There are two types of Vitamin K, namely K1 and K2. And within K2, there are several forms:
* Vitamin K1 (Phyloquinones)
* Vitamin K2 (Menaquinones)
* MK-4
* MK-7
* MK-8 (not available in supplement form)
* MK-9 (not available in supplement form)
* MK-10 (not available in supplement form)

Vitamin K1 is found in plants and is essential for blood clotting and coagulation. Supplementing is usually not necessary since the body recycles K1. It also blocks the effect of heart medications like Coumadin or Warfarin. Vitamin K2 can also have some effect on these drugs, so talk to your doctor about this.

Food sources of K2
Vitamin K2 is neither recycled nor stored by the body. Unless you eat Vitamin K2 rich foods regularly, you will become deficient in a matter of days. Making matters worse, it is almost impossible to get Vitamin K2-rich foods at the grocery store.

The richest food sources are fatty goose liver, natto, and fermented cod liver oil. Much lower levels are found in sauerkraut, old world hard cheeses, caviar, organ meats, and grass-fed butter. Eggs from pastured chicken also have a little K2. Regular butter and cheese have very low levels of K2.

Why is K2 important?
It keeps calcium in your bones and teeth and out of your arteries. It also keeps calcium out of soft tissues like kidneys and cartilage, preventing kidney stones and heel spurs. Without enough K2, calcium may get deposited in your arteries, adding to arterial blockage. Calcium also attaches to plaque. This can cause hardening of the arteries, heart attacks and strokes.

K1 provides little or no cardiovascular benefits. Studies have repeatedly found associations between K2 and heart health, but no such connection exists for K1.

The different MK forms activate different proteins that affect different functions in the body. About 15 such proteins have been identified, most of them very recently.

How much should I take?
100 - 200 mcg (micrograms) per day should meet your needs. There is very little risk of overdosing because the body does not store K2. See note above about K1 and blood coagulation.

Different MK forms
Generally, animal foods contain MK-4 and fermented foods contain the longer ones MK-5 thru 14. We simply don't know much about the roles all of these K2 forms play.

MK-4 is the most studied and consumed K2 in our diets. It is the main K2 form found in the brain. MK-4 is transported and stored in the body very differently than the other forms. It is the form of K2 found in breast milk. It is a fast-acting Vitamin K2. Babies need this form and are usually born deficient. In the US, newborns are given a shot of K1. In Japan, newborns get the more effective MK-4 instead. All healthy traditional cultures have consume mostly MK-4.

MK-7 is often found in vegetables, especially fermented soybeans. The science on this longer-lasting K2 is still emerging but is extremely promising for heart health. MK-7 seems to be able to do some of the functions of MK-4 and it stays in the body for 2-3 days before being cleared. This higher half-life is desirable given its potent heart health benefits.

MK-8 - 14 are found in fermented products like cheese. These may have heart health benefits too but the science is in its infancy. MK-8 thru 14 are not available in supplement form.

CIS or TRANS MK-7?
Some manufacturers are starting to make absorption and bioavailability claims about these two forms. As of now, none of the products reviewed here discuss this subject on their labels. This topic is worth staying tuned to.

MK-7 can be made from several sources, but the most popular source is soybeans. If you are soy-sensitive, you need to be aware of this. There are also MK-7 forms made from chickpeas and flower petals.

Since there are only two K2 forms available, you'd still benefit greatly from consuming K2 rich foods that contain other MK forms not available in supplement form.

Finally, K2 works in conjunction with Vitamins A and D3. So make sure you are getting enough of those two vitamins as well.

BREAKDOWN: Below is a breakdown of these supplements.

Innovix Labs Full Spectrum Vitamin K2 (See, Full Spectrum VITAMIN K2 (by InnovixLabs). Provides two essential forms of K2 (MK-4 + MK-7). Total of 600 mcg of K2 per capsule. Soy-free. 90 Capsules.)
*****
Not certified Kosher or Halal
$21.99 for 90 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.24 (using Amazon's price)
Price per 100 mcgs MK-7: $.24
Price per 100 mcgs MK-4: $.05
Price per 100 mcgs total K2: $.04
No soy
No GMOs
No stearates
No ascorbyl palmitate
No cholesterol
Not vegetarian
Not enteric coated
Full spectrum K2 (MK-4 plus MK-7)
One gel cap contains:
500 mcgs* of Vitamin K2 as MK-4
100 mcgs* of Vitamin K2 as MK-7
Some ingredients sourced from China (Vitamin K2 MK-4)
Phone Number: (888) 799-7627
Manufactured in the U.S.A.
Ingredients: Vitamin K2 MK-4 (as menatetrenone), Vitamin K2 MK-7 (as menaquinone-7), extra virgin olive oil, palm oil, gelatin, glycerin, purified water, and caramel color

Nutrigold Vitamin K2 (MK-7) Gold (See, Nutrigold Vitamin K2 - MK7 Gold (From Natto in Organic Olive Oil), 100 mcg, 120 softgels)
*****
Certified Kosher
$22.99 for 120 100 mg capsules on Amazon
Recommended Serving: one capsule
Price per capsule: $.19 (using Amazon's price)
Price per 100 mcgs MK-7: $.19
Price per 100 mcgs total K2: $.19
Contains soy (soy allergen free)
No GMOs
No stearates
No ascorbyl palmitate
No cholesterol
Vegetarian and certified vegan
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One capsule contains 100 mcgs* of Vitamin K2 as MK-7
No ingredients sourced from China
Phone Number: (800) 476-3542
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menaquinone-7), non-GMO organic olive oil (for absorption), non-GMO organic sunflower lecithin, vegetarian capsule (non-GMO plant cellulose)

Doctor's Best Natural Vitamin K2 (MK-7) (See, Doctor's Best Natural Vitamin K2 MenaQ7 Vegetable Capsules, 60-Count)
*****
Not certified Kosher or Halal
$8.69 for 60 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.14 (using Amazon's price)
Price per 100 mcgs MK-7: $.32
Price per 100 mcgs MK-4: N/A
Price per 100 mcgs total K2: $.32
No soy
No GMOs
Contains stearates
No ascorbyl palmitate
No cholesterol
Vegetarian
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One gel cap contains 45 mcgs* of Vitamin K2 as MK-7
Phone Number: (800) 333-6977
No ingredients sourced from China
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menaquinone-7), modified cellulose (vegetarian capsule), magnesium stearate (vegetable source), maltodextrin, and fatty acids

Life Extension Super K with Advanced K2 Complex (See, Life Extension Super K with Advanced K2 Complex Softgels, 90-Count)
***
Not certified Kosher or Halal
$17.79 for 90 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.19 (using Amazon's price)
Price per 100 mcgs MK-7: $.10
Price per 100 mcgs MK-4: $.02
Price per 100 mcgs total K2: $.02
No soy (soy allergen free)
No GMOs
No stearates
Contains ascorbyl palmitate
No cholesterol
Not vegetarian
Not enteric coated
Full spectrum K2 (MK-4 plus MK-7)
One gel cap contains:
1000 mcgs* of Vitamin K1
1000 mcgs* of Vitamin K2 as MK-4
200 mcgs* of Vitamin K2 as MK-7
All active ingredients are sourced from China
Phone Number: (800) 226-2370
Manufactured in the U.S.A.
Ingredients: Vitamin K1 (as phytonadione), Vitamin K2 MK-4 (as menatetrenone), Vitamin K2 MK-7 (as menaquinone-7), ascorbyl palmitate, extra virgin olive oil, gelatin, glycerin, beeswax, purified water, and carob color

Now Foods Vitamin K-2 (MK-4) (See, NOW Foods Vitamin K-2,100mcg, 100 Vcaps)
***
Not certified Kosher or Halal
$9.99 for 100 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.10 (using Amazon's price)
Price per 100 mcgs MK-7: $ N/A
Price per 100 mcgs MK-4: $.10
Price per 100 mcgs total K2: $.10
No soy
No GMOs
No stearates
Contains ascorbyl palmitate
No cholesterol
Vegetarian
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One gel cap contains 100 mcgs* of Vitamin K2 as MK-4
Some ingredients sourced from China (Vitamin K2 MK-4)
Phone Number: (888) 669-3663
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menaquinone-4), alfalfa (medicago sativa), cellulose (capsule), rice flour, maltodextrin, ascorbyl palmitate, and silica

Now Foods MK-7 Vitamin K-2 (See, Now Foods Vitamin K-2 (MK7) Veg Capsules, 100 mcg, 60 Count)
*****
Not certified Kosher or Halal
$11.98 for 60 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.20 (using Amazon's price)
Price per 100 mcgs MK-7: $.20
Price per 100 mcgs MK-4: N/A
Price per 100 mcgs total K2: $.20
Contains soy
No GMOs
No stearates
Contains ascorbyl palmitate
No cholesterol
Not vegetarian
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One gel cap contains 100 mcgs* of Vitamin K2 as MK-7
No ingredients sourced from China
Phone Number: (888) 669-3663
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menaquinone-7), rice flour, cellulose (capsule), gelatin, ascorbyl palmitate, and silica

Jarrow Formulas MK-7 (See, Jarrow Formulas MK-7 (vitamin K2), 60 Softgels)
*****
Not certified Kosher or Halal
$13.69 for 60 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.23 (using Amazon's price)
Price per 100 mcgs MK-7: $.25
Price per 100 mcgs MK-4: N/A
Price per 100 mcgs total K2: $.25
Contains soy
No GMOs
No stearates
No ascorbyl palmitate
No cholesterol
Not vegetarian
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One gel cap contains 90 mcgs* of Vitamin K2 as MK-7
No ingredients sourced from China
Phone Number: (310) 204-6936
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menaquinone-7), medium chain triglycerides, evening primrose oil, and soybean oil. Softgel consists of gelatin, glycerin, water, and caramel (as a light barrier)

Solgar Natural Vitamin K2 (MK-7) (See, Solgar - Natural Vitamin K2 (MK-7) 100 mcg Vegetable Capsules - 50)
***
Not certified Kosher or Halal
$13.27 for 50 100 mg gel caps on Amazon
Recommended Serving: one gel cap
Price per gel cap: $.26 (using Amazon's price)
Price per 100 mcgs MK-7: $.26
Price per 100 mcgs MK-4: N/A
Price per 100 mcgs total K2: $.26
Contains soy
No GMOs
Contains stearates
No ascorbyl palmitate
No cholesterol
Vegetarian
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One gel cap contains 100 mcgs* of Vitamin K2 as MK-7
Some ingredients sourced from China (dicalcium phosphate)
Phone Number: (201) 944-2311
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menaquinone-7), dicalcium phosphate, vegetable cellulose, vegetable magnesium stearate, and silica

Thorne Research Vitamin K2 Liquid (MK-4) (See, THORNE RESEARCH - Vitamin K2 Liquid - 1 fl oz [Health and Beauty])
****
Not certified Kosher or Halal
$61.85 for one fl oz (30 mL) bottle on Amazon
Flavor: none (no taste)
18 month shelf life after opening
Don't have to refrigerate after opening
1200 drops per bottle
Recommended Serving = 15 drops 1-3 times per day
Price per serving (15 drops) = $.77 (using Amazon's price)
Price per 100 mcgs MK-7: $ N/A
Price per 100 mcgs MK-4: $.005
Price per 100 mcgs total K2: $.005
Not full spectrum K2 (MK-4 plus MK-7)
One drop contains 1000 mcgs* of Vitamin K2 as MK-4
No soy
No GMOs
No stearates
No ascorbyl palmitate
No cholesterol
Vegetarian
Some ingredients sourced from China (proprietary information)
Phone Number: (800) 228-1966
Manufactured in the U.S.A.
Ingredients: Vitamin K-2 (menatetrenone-4), medium chain triglyceride oil, and mixed tocopherols

Carlson Labs Vitamin K-2 (MK-4) (See, Carlson Labs Vitamin K-2, 5mg, 180 Capsules)
*****
Not certified Kosher or Halal
$28.65 for 180 100 mg capsules on Amazon
Recommended Serving: one capsule
Price per gel cap: $.16 (using Amazon's price)
Price per 100 mcgs MK-7: $ N/A
Price per 100 mcgs MK-4: $.003
Price per 100 mcgs total K2: $.003
No soy
No GMOs
Contains stearates
No ascorbyl palmitate
No cholesterol
Not vegetarian
Not enteric coated
Not full spectrum K2 (MK-4 plus MK-7)
One capsule contains 5 mgs of Vitamin K2 as MK-4
No ingredients sourced from China
Phone Number: (888) 234-5656
Manufactured in the U.S.A.
Ingredients: Vitamin K2 (as menatetrenone-4), microcrystalline cellulose, magnesium stearate (excipient), silicon dioxide, vegetable stearin, gelatin capsule

PRICE: PER PILL: Thorne Research Vitamin K2 Liquid (MK-4) ($.77 per 15 drops) is the most expensive per pill of those in the comparison; followed by Solgar Natural Vitamin K2 (MK-7) ($.26 per gel cap); followed by Innovix Labs Full Spectrum Vitamin K2 ($.24 per gel cap); followed by Jarrow Formulas MK-7 ($.23 per gel cap); followed by Now Foods MK-7 Vitamin K-2 ($.20 per gel cap); followed by Nutrigold Vitamin K2 (MK-7) Gold ($.19 per gel cap) and Life Extension Super K with Advanced K2 Complex ($.19 per gel cap); followed by Carlson Labs Vitamin K-2 (MK-4) ($.16 per gel cap); followed by Doctor's Best Natural Vitamin K2 (MK-7) ($.14 per gel cap); and followed by Now Foods Vitamin K-2 (MK-4) ($.10 per gel cap), which is the least expensive per pill of those in the comparison.

PRICE PER 100 MCGS K2 MK-7: Solgar Natural Vitamin K2 (MK-7) ($.26 per 100 mcg MK-7) is the most expensive per 100 mcgs K2 MK-7 of those in the comparison; followed by Doctor's Best Natural Vitamin K2 (MK-7) ($.32 per 100 mcg MK-7); followed by Jarrow Formulas MK-7 ($.25 per 100 mcg MK-7); followed by Now Foods MK-7 Vitamin K-2 ($.20 per 100 mcg MK-7); followed by Innovix Labs Full Spectrum Vitamin K2 ($.24 per 100 mcg MK-7); followed by Nutrigold Vitamin K2 (MK-7) Gold ($.19 per 100 mcg MK-7); and followed by Life Extension Super K with Advanced K2 Complex ($.10 per 100 mcg MK-7), which is the least expensive per 100 mcgs K2 MK-7 of those in the comparison.

PRICE PER 100 MCGS K2 MK-4: Now Foods Vitamin K-2 (MK-4) ($.09 per 100 mcgs K2 MK-4) is the most expensive per 100 mcgs K2 MK-4 of those in the comparison; followed by Innovix Labs Full Spectrum Vitamin K2 ($.05); followed by Life Extension Super K with Advanced K2 Complex ($.02 per 100 mcgs MK-4); followed by Thorne Research Vitamin K2 Liquid (MK-4) ($.005); and followed by Carlson Labs Vitamin K-2 (MK-4) ($.003 per 100 mcgs MK-4), which is the least expensive per 100 mcgs K2 MK-4 of those in the comparison.

PRICE PER 100 MCGS TOTAL K2: Solgar Natural Vitamin K2 (MK-7) ($.26 per 100 mcgs total K2) is the most expensive per 100 mcgs total K2; followed by Doctor's Best Natural Vitamin K2 (MK-7) ($.32 per 100 mcgs total K2); followed by Jarrow Formulas MK-7 ($.25 per 100 mcgs total K2); followed by Now Foods MK-7 Vitamin K-2 ($.20 per 100 mcgs total K2); followed by Nutrigold Vitamin K2 (MK-7) Gold ($.19 per 100 mcgs total K2); followed by Now Foods Vitamin K-2 (MK-4) ($.10 per 100 mcgs total K2); followed by Innovix Labs Full Spectrum Vitamin K2 ($.04 per 100 mcgs total K2); followed by Life Extension Super K with Advanced K2 Complex ($.02 per 100 mcgs MK-4); followed by Thorne Research Vitamin K2 Liquid (MK-4) ($.005 per 100 mcgs total K2); and followed by Carlson Labs Vitamin K-2 (MK-4) ($.003 per 100 mcgs total K2), which is the least expensive per 100 mcgs total K2

PILL SIZE: All of these products are small 100 mg pills with the exception of Thorne Research Vitamin K2 Liquid (MK-4), which is not in a pill form.

SOY CONTENT: Innovix Labs Full Spectrum Vitamin K2, Doctor's Best Natural Vitamin K2 (MK-7), Life Extension Super K with Advanced K2 Complex, Now Foods Vitamin K-2 (MK-4), Thorne Research Vitamin K2 Liquid (MK-4), and Carlson Labs Vitamin K-2 (MK-4) do not contain soy. Nutrigold Vitamin K2 (MK-7) Gold, Now Foods MK-7 Vitamin K-2, Jarrow Formulas MK-7, and Solgar Natural Vitamin K2 (MK-7) contain soy.

GMO CONTENT: None of these supplements contain GMOs.

STEARATE CONTENT: Innovix Labs Full Spectrum Vitamin K2, Nutrigold Vitamin K2 (MK-7) Gold, Life Extension Super K with Advanced K2 Complex, Now Foods Vitamin K-2 (MK-4), Now Foods MK-7 Vitamin K-2, Jarrow Formulas MK-7, and Thorne Research Vitamin K2 Liquid (MK-4) do not contain stearates. Doctor's Best Natural Vitamin K2 (MK-7), Solgar Natural Vitamin K2 (MK-7), and Carlson Labs Vitamin K-2 (MK-4) contain stearates.

ASCORBYL PALMITATE CONTENT: Innovix Labs Full Spectrum Vitamin K2, Nutrigold Vitamin K2 (MK-7) Gold, Doctor's Best Natural Vitamin K2 (MK-7), Jarrow Formulas MK-7, Solgar Natural Vitamin K2 (MK-7), Thorne Research Vitamin K2 Liquid, and Carlson Labs Vitamin K-2 (MK-4) do not contain ascorbyl palmitate. Life Extension Super K with Advanced K2 Complex, Now Foods Vitamin K-2 (MK-4), and Now Foods MK-7 Vitamin K-2 contain ascorbyl palmitate.

CHOLESTEROL: None of these supplements contains cholesterol.

VEGETARIAN: Nutrigold Vitamin K2 (MK-7) Gold, Thorne Research Vitamin K2 Liquid (MK-4) and Solgar Natural Vitamin K2 (MK-7) are vegetarian. The others are not. Nutrigold Vitamin K2 (MK-7) Gold is certified vegan.

CHINA: The following supplements contain ingredients that are sourced from China: Innovix Labs Full Spectrum Vitamin K2, Life Extension Super K with Advanced K2 Complex, Now Foods Vitamin K-2 (MK-4), Solgar Natural Vitamin K2 (MK-7), and Thorne Research Vitamin K2 Liquid (MK-4).

PRECAUTIONS: If you take a blood thinner like Coumadin® (warfarin), which works by inhibiting the effect of Vitamin K, the use of a Vitamin K supplement, especially K1, should be discussed with your doctor before you begin taking it, as changes in blood thinning may occur.

OPINION: All ten are good Vitamin K2 products, with some significant differences:

Innovix Labs Full Spectrum Vitamin K2 contains MK-4 and MK-7. It is an excellent product. It does not contain soy. It does not contain GMOs. It does not contain stearates. It does not contain ascorbyl palmitate. It is not certified Kosher. It is not vegetarian. This is considered a full spectrum Vitamin K, i.e., it is a combination of two forms of Vitamin K, MK-4 and MK-7. Some of its ingredients are sourced from China (Vitamin K2 MK-4).

Nutrigold Vitamin K2 (MK-7) Gold contains MK-7. It is an excellent product. It contains soy (soy allergen free). It does not contain GMOs. It does not contain stearates. It does not contain ascorbyl palmitate. It is certified Kosher. It is vegetarian. It is certified vegan.

Doctor's Best Natural Vitamin K2 (MK-7) contains MK-7. It is an excellent product. It does not contain soy. It does not contain GMOs. It contains stearates. It does not contain ascorbyl palmitate. It is not certified Kosher. It is vegetarian. It contains less MK-7 per pill than the others (45 mcgs).

Life Extension Super K with Advanced K2 Complex contains K1, MK-4, and MK-7. It is a fair product. It contains 1000 mcgs of Vitamin K1, 1000 mcgs Vitamin K2 as MK-4, and 200 mcgs of Vitamin K2 as MK-7. It does not contain soy. It does not contain GMOs. It does not contain stearates. It contains ascorbyl palmitate. It is not certified Kosher. It is not vegetarian. This is considered a full spectrum Vitamin K, i.e., it is a combination of several forms of Vitamin K. It contains 1000 mcgs of Vitamin K1 which the other nine supplements don't have. All of its active ingredients, including Vitamin K2, are sourced from China.

Now Foods Vitamin K-2 (MK-4) contains MK-4. It is a fair product. It does not contain soy. It does not contain GMOs. It does not contain stearates. It contains ascorbyl palmitate. It is not certified Kosher. It is vegetarian. It includes alfalfa, which is a rich source of natural Vitamin K. MK-4 costs less than MK-7. It is the least expensive of the ten products mentioned. Some of its ingredients are sourced from China (Vitamin K2 MK-4).

Now Foods MK-7 Vitamin K-2 (MK-7) contains MK-7. It is an excellent product. It contains soy. It does not contain GMOs. It does not contain stearates. It contains ascorbyl palmitate. It is not certified Kosher. It is not vegetarian.

Jarrow Formulas MK-7 contains MK-7. It is an excellent product. It contains soy. It does not contain GMOs. It does not contain stearates. It does not contain ascorbyl palmitate. It is not certified Kosher. It is not vegetarian. It has the least amount of MK-7 of those in the comparison.

Solgar Natural Vitamin K2 (MK-7) contains MK-7. It is a fair product. It contains soy. It does not contain GMOs. It contains stearates. It does not contain ascorbyl palmitate. It is not certified Kosher. It is vegetarian. Some of its ingredients are sourced from China (dicalcium phosphate).

Thorne Research Vitamin K2 Liquid (MK-4) is a liquid and it contains MK-4. It is very potent, but it is expensive. One drop contains 1000 mcgs of MK-4. So, one serving consisting of 15 drops contains 15000 mcgs of MK-4. It does not contain soy. It does not contain GMOs. It does not contain stearates. It does not contain ascorbyl palmitate. It is not certified Kosher. It is vegetarian. It costs the most per bottle, but it is a great value per 100 mcgs MK-4. Some of its ingredients are sourced from China. The company refused to divulge what those ingredients are, claiming the information is "proprietary." In fact, that information is not proprietary, as a result of which I have deducted one star from this product.

Carlson Labs Vitamin K-2 (MK-4) contains MK-4. It does not contain soy. It does not contain GMOs. It contains stearates. It does not contain ascorbyl palmitate. It is not certified Kosher. It is not vegetarian.

RECOMMENDATION: If I were to select one, it would be Innovix Labs Full Spectrum Vitamin K2 because it is considered a full spectrum Vitamin K since it contains MK-4 and MK-7. It is the only supplement in this group that contains no soy, no GMOs, no stearates, no ascorbyl palmitate, and no cholesterol. One of its ingredients, MK-4, is sourced from China, but thoroughly tested in the United States.

However, Thorne Research Vitamin K2 Liquid (MK-4), the only liquid in this group, is extremely potent, but it is also expensive. If for some reason you have a need for this kind of potency (one drop contains 1000 mcgs MK-4), Thorne Research Vitamin K2 Liquid might be a good choice.

RATING:

FIVE STARS: I rated Innovix Labs Full Spectrum Vitamin K-2, Nutrigold Vitamin K2 (MK-7) Gold, Doctor's Best Natural Vitamin K2 (MK-7), Now Foods MK-7 Vitamin K-2, Jarrow Formulas MK-7, and Carlson Labs Vitamin K-2 (MK-4) five stars. In my opinion, these are all excellent products for the reasons stated above.

FOUR STARS: I rated Thorne Research Vitamin K2 Liquid (MK-4) four stars. In my opinion, this is an excellent product but the company failed to divulge ingredients sourced from China, improperly claiming that information is "proprietary."

THREE STARS: I rated Life Extension Super K with Advanced K2 Complex, Now Foods Vitamin K-2 (MK-4), and Solgar Natural Vitamin K2 (MK-7) three stars. In my opinion, these are fair products for the reasons stated above.

I have separately reviewed all of these supplements.

* 1000 micrograms (mcg) equal one milligram (mg).

Prices current as of 05/10/2015.
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115 of 126 people found the following review helpful
on October 15, 2010
"The inverse association between heart disease and vitamin K2 intake is more straightforward. In The Rotterdam Study, which prospectively followed just over 4,600 men aged 55 or older in the Netherlands, the highest intake of vitamin K2 was associated with a 52 percent lower risk of severe aortic calcification, a 41 percent lower risk of coronary heart disease (CHD), a 51 percent lower risk of CHD mortality, and a 26 percent lower risk of total mortality. Even though the study population consumed ten times more K1 than K2, vitamin K1 had no association with either the degree of aortic calcification or the risk of heart disease. The profound effects of variations in such small amounts of dietary K2 emphasize just how powerful this substance is in the prevention of degenerative disease."
From the Weston A. Price Foundation quoting Chris Masterjohn

**Edited 2/25/2013:
After taking one of these daily for several years, I had a new heart scan done and saw that my coronary arteries were clogging up faster than normal! So now I've given up on these and am fermenting my own natto, which is the source of MK-7, but also has many other heart benefiting factors, such as nattokinase. Also I'm eating 100g of natto daily which is about nine times the dose of these pills.
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61 of 69 people found the following review helpful
on November 19, 2011
Taking vitamins and nutritional supplements are a fascinating exercise in negative feedback; that is, they prevent your body from breaking down from the ravages of age and oxidative stress. This means you will note their deficiency, but not their sufficiency. Compound this reality with the fact that, as of this writing, research labs cannot accurately measure levels of several crucial nutrients; Vitamin K is one of those unmeasurable but crucial bio-markers. Now add to the foregoing the fact that many supplements MUST be ingested in the proper form and dosage for maximum efficacy, and the consumer ends up as much confused as helped.

Which all explains why I appreciate Jarrow Formulas' products. Consider Jarrow's MK-7, the correct form of Vitamin K2... Ahh, you see, it is not so simple as just buying Vitamin K! You must know the differences between K1 and K2, and also the constituent parts of K2 (the form of K you want to supplement) to know that you (your body) seeks to replenish its store of MK-7. Jarrow does this work for you, and more.

So I will not make a claim I cannot support ("I feel better than I have in decades, thanks to this product") but I can say that taking MK-7 helps feed my body at the cellular level, and that, after much research, Jarrow's products rank among the best of breed.
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74 of 86 people found the following review helpful
Vitamin K2 is may help in with following:

-Blood clotting
-Prevention of Heart Disease and Arterial Plaque
-Enhance Bone Health and Prevent Osteoporosis
-Fight Cancer
-Boost the Immune System and Help Prevent the Signs of Aging
-May reduce the risk of type 2 diabetes

Vitamin K2 is best absorbed with food containing fat. The softgels are small and easy to swallow with no noticeable smell or taste.
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32 of 36 people found the following review helpful
Size: 1 pack of 60Vine Customer Review of Free Product( What's this? )
If you have dark circles under your eyes you will love this little miracle. It is the main ingredient in the famously expensive "blue jar" cream advertized on TV and using it straight from the capsule works even faster and for literally pennies. The skin under the eye is very thin and when the capillaries break from allergies or eye rubbing, they present as dark circles. Pop a capsule and apply the oil under your eyes before bed. You'll wake with brighter eyes and the dark circles gone. When I did it the first time I applied to one eye to gauge the difference and it was like night and day.
You have very little to lose and so much to gain. I absolutely love this product.
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25 of 28 people found the following review helpful
on May 19, 2011
this product seems to be on the cutting edge for the prevention of heart attack and heart disease
i run it every other morning with omega 3-6-9, Vitamin D and Calcium

since then, it seems like the occasional minor chest pains ive had for the last 20 years or so have reduced and/or stopped for the most part

if it can really keep the calcium out of your arteries, and onto your bones like the studies have shown, it is certainly something worth looking into
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25 of 28 people found the following review helpful
on July 4, 2010
I bought this supplement because of the Vitamin K that Dr. Weston Price recommended to take with cod-liver oil. Butter oil also contains Vitamin K but the cod liver oil with butter oil is too expensive so I decided to buy this product which works just as well. Meanwhile, my husband reports fewer ectopic heartbeats and wants me to continue to buy this product for that alone.
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11 of 11 people found the following review helpful
on May 8, 2013
I agree with all the positive reviewers but have something extra to add about Jarrow MK-7. As a new addition to calcium, magnesium, D3 and ACES, I have been taking two softgels of MK-7 for 6 months and while at my dentist I was told I had almost zero plaque! It was amazing; I usually have to endure the scraping off of plaque, but not this time. They found just a little between my teeth (probably cause I don't floss daily) and that was it. This leads me to believe that the claims are true that if it doesn't show up on my teeth it won't show up on my artieries.
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29 of 34 people found the following review helpful
on December 26, 2008
I take this product in conjunction with my Multi calcium products to help the minerals absorb better in my bones. I love this product easy to take, since K2 needs some type of fat when you take it. This product has it all in one tablet.
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