One-time purchase:
$13.69 ($0.23 / Count)
Subscribe & Save: Save 5%
$13.01 ($0.22 / Count)
Other Sellers on Amazon
Add to Cart
$12.20 ($0.20 / Count)
+ $0.99 shipping
Sold by: Nutrition Depot
Add to Cart
$11.82 ($0.20 / Count)
+ $1.89 shipping
Sold by: Web Vitamins
Add to Cart
$13.80 ($0.23 / Count)
+ Free Shipping
Sold by: NutriCelebrity

Image Unavailable

Image not available for
Color:
  • Jarrow Formulas MK-7, 90 mcg, 60 Count
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

Jarrow Formulas MK-7, 90 mcg, 60 Count

by Jarrow
| 11 answered questions

List Price: $23.95
Price: $13.69 ($0.23 / Count) & FREE Shipping on orders over $35. Details
You Save: $10.26 (43%)
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
1 pack of 60
  • 90 mcg Per Serving
  • 1 pack (60 )
  • Critical to Blood Clotting & Coagulation

Pay as low as $11.64 ($0.19 / Count) and never run out with Subscribe & Save.
Save 5% when you subscribe to regular deliveries of this item. Save 15% on your entire delivery when you subscribe to 5 or more items that arrive in the same month. No commitments, no obligations, and shipping is FREE. Learn more
25 new from $11.82

Save 25% on EAS products
Save 25% on EAS Products Make the most out of your workout.Learn more

Frequently Bought Together

Jarrow Formulas MK-7, 90 mcg, 60 Count + Jarrow Formulas Ubiquinol  QH-Absorb, 100 mg, 120 Count + Jarrow Formulas Astaxanthin, 60 Count, 4 mg
Price for all three: $65.77

Buy the selected items together


Product Description

Size: 1 pack of 60

Product Description

Jarrow Formulas MK-7 is made via fermentation by Bacillus subtilus natto. MK-7 (Menaquinone-7) is an enhanced bioactive form of vitamin K2 from Natto that is ten times better absorbed than K1 from spinach. MK-7 is responsible for the carboxylation of specific bone proteins needed for building bone.* Also, MK-7 promotes cardiovascular health by helping to maintain arterial elasticity.*

Amazon.com

Jarrow Formulas MK-7, 60 Softgels
At a Glance:
  • A superior vitamin K product
  • Offers an enhanced bioactive form of vitamin K2 from cultured Bacillus natto
  • Ten times better absorbed than K1 from spinach
  • Ideal for anyone seeking optimum cardiovascular health and healthy bones*
Jarrow Formulas MK-7, 60 Softgels Product Shot

Offers an enhanced bioactive form of vitamin K2 from cultured Bacillus natto.

Jarrow Formulas MK-7, 60 Softgels Product Shot

Ten times better absorbed than K1 from spinach. View larger.

Beyond Coagulation

The story of vitamin K began in 1929 when the Danish researcher Henrik Dam discovered its role in coagulation. Vitamin K is integral to the conversion of the amino acid glutamic acid (Glu) into gamma-carboxyglutamate (Gla). Proteins containing Gla are important in coagulation processes. These proteins work together in a complex cascade to create fibrin that strengthens platelets and helps to stop the flow of blood when necessary. Almost fifty years later, vitamin K benefits beyond coagulation were discovered.*

Vitamin K is a group name for a number of structurally related compounds including phylloquinone (vitamin K1) and menaquinones (K2 vitamins). The synthetic, short-chain vitamin K1 is commonly used in food supplements, but recently the natural, long-chain menaquinone-7 (MK-7) has also become available as a dietary supplement. All forms of vitamin K serve as a cofactor for the posttranslational carboxylation of certain protein bound glutamate residues, which are converted into gamma-carboxyglutamate (Gla). These Gla residues form calcium-binding sites that are essential for the activity of the proteins in which they are found. The most recognized Gla-containing proteins are the blood coagulation factors II, VII, IX, and X, which are all synthesized in the liver. Gla proteins not related to blood clotting are osteocalcin (synthesized in bone) and matrix Gla protein (mainly synthesized in cartilage and in the vessel wall).

For example, carboxylated matrix Gla protein binds calcium and helps guard against the deposition of calcium in arteries. Likewise, researchers have confirmed that vitamin K activates matrix Gla protein and promotes arterial health.*

Osteocalcin is the most abundant vitamin K-dependent protein in bone. It is synthesized by the bone forming cells known as osteoblasts and plays an important role in the regular deposition of hydroxyapatite in the bones. The amount of osteocalcin that is not carboxylated [under-carboxylated osteocalcin] is considered a sensitive measure of vitamin K status in bone, with an elevated percentage of under-carboxylated osteocalcin associated with low dietary intakes of vitamin K. As a result, bone health relies heavily on the activation of osteocalcin by vitamin K. Studies show that when supplemental vitamin K is given to people with inactive osteocalcin, active levels will rise.*

Modern scientific evidence has linked low vitamin K intake with a number of suboptimal health conditions. In addition, vitamin K supplements have been shown to help maintain healthy bone density and display a beneficial effect on the elastic properties of the arterial vessel wall.*

Superiority of K2

The K2 vitamins include the menaquinones, MK-7, MK-8, and MK-9 and are present in some fermented foods, most notably natto. Natto is a traditional Japanese fermented soybean food, which is produced by growing the MK-7 generating Bacillus natto on the surface of cooked soybean. Natto also happens to be the richest dietary source of vitamin K presently known, almost all of which occurs in the form of MK-7. The longer-chain menaquinones, including MK-7, are more hydrophobic, have longer half-lives and are incorporated into low-density lipoproteins. Moreover, MK-7 from natto, or Bacillus natto fermentation, is much better absorbed than K1 from spinach. While vitamin K1 is primarily absorbed by the liver, MK-7 is absorbed in extra hepatic tissues, such as the arterial wall, pancreas, and testes.*

A recent study compared the in vivo properties of two forms of vitamin K: MK-7 and K1. Researchers demonstrated that after oral ingestion, MK-7 is more effective in catalyzing osteocalcin carboxylation in bone.* They also noted that K1 declined to its baseline level within several hours, whereas MK-7 remained detectable for at least 4 days. The longer half-life means MK-7 is available to support bone and arterial integrity for much longer periods than other forms of vitamin K.*

During the last ten years, several studies have looked at the relationship between food intake and bone health. Evidence of stronger bones in people eating natto adds weight to the theory that people generally have insufficient serum levels of vitamin K2 for optimum bone and arterial health. Furthermore, a long-term population-based study, carried out in the Netherlands between 1990 and 2000, demonstrated that dietary intake of vitamin K2, but not vitamin K1, promoted optimum cardiovascular health.*

Warning:

Do NOT use if taking anticoagulant drugs (such as Warfarin) or other medications.

About Jarrow Formulas

Jarrow Formulas' complete line of over 350 nutritional products includes vitamins, minerals, probiotics, standardized herbal concentrates, amino acids, enzymes and enteral nutrition products. Customers can be assured of purity, value and potency when choosing these products.

What's in the Box

Jarrow Formulas MK-7, 60 Softgels.

FDA Disclaimer

Other Products from Jarrow Formulas:

Matrix Image
Matrix Image
Matrix Image
Matrix Image

Product Details

Size: 1 pack of 60
  • Product Dimensions: 6 x 5 x 4 inches ; 1.3 ounces
  • Shipping Weight: 1.4 ounces (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • ASIN: B0013OVVFA
  • UPC: 790011300014
  • Item model number: MK7
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (330 customer reviews)
  • Amazon Best Sellers Rank: #663 in Health & Personal Care (See Top 100 in Health & Personal Care)
  •  Would you like to give feedback on images?


Important Information

Ingredients
Other Ingredients: Medium Chain Triglycerides, Evening Primrose Oil, Beeswax and Lecithin. Softgel Consists of Gelatin, Water, Glycerin and Carob (As A Light Barrier). Contains: Soy

Legal Disclaimer
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

Customer Reviews

Jarrow is a reputable vitamin company and I think their products are of good quality.
TheProf
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.
Kate McMurry
When I take Vitamin K to repair my cardiovascular and bone health, I look for MK-7 for the best source of Vitamin K2.
Jeri Zerr

Most Helpful Customer Reviews

193 of 206 people found the following review helpful By Kate McMurry TOP 500 REVIEWERVINE VOICE on April 7, 2012
Size Name: 1 pack of 60 Verified Purchase
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.
Read more ›
21 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
111 of 122 people found the following review helpful By Jules Abramson on October 15, 2010
Size Name: 1 pack of 60 Verified Purchase
"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.
24 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
61 of 66 people found the following review helpful By RWM TOP 50 REVIEWER on May 8, 2013
Size Name: 1 pack of 60
*****
Here is a side-by-side comparison of nine leading Vitamin K-2 supplements: 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 an essential, fat-soluble vitamin that cannot be synthesized by the body, making supplementation necessary. Vitamin K is a group of three vitamins: Vitamin K1 (phylloquinone), Vitamin K2 (menaquinone), and Vitamin K3 (menaphthone). Vitamin K2 is usually found in meats, dairy, and egg yolks.

Vitamin K1 is involved in blood clotting. Vitamin K2 directs calcium into your bones and teeth instead of your arteries. I am on a Vitamin D3 regimen of 5000 I.U. daily and believe Vitamin K2 helps with the proper assimilation of that D3.

Unless it is properly directed, calcium can block arteries instead of going into your bones. This happens when calcium builds up in the blood vessels. Calcium also attaches to plaque. This can cause hardening of the arteries, heart attacks and strokes. Vitamin K2 helps calcium to go to the right places. Vitamin K2 directs calcium to go into your bones and teeth instead of your arteries. Recently published data on Vitamin K2 demonstrate its positive effect upon heart disease and bone metabolism.

Vitamin K2 includes several subtypes. The two subtypes most studied are MK-4 and MK-7. The most well studied of the menaquinones is MK-4. However, MK-7 is the most commonly derived form. MK-4 is the more difficult to find.

MK-7 remains present in the blood longer than MK-4.
Read more ›
5 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
58 of 66 people found the following review helpful By David M. Gordon on November 19, 2011
Size Name: 1 pack of 60 Verified Purchase
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.
3 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Most Recent Customer Reviews

Set up an Amazon Giveaway

Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more
Jarrow Formulas MK-7, 90 mcg, 60 Count
This item: Jarrow Formulas MK-7, 90 mcg, 60 Count
Price: $23.95 $13.69
Ships from and sold by Amazon.com

Want to discover more products? You may find many from synthetic k 2 shopping list.

Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.