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Life Extension Super K with Advanced K2 Complex 90 softgels

4.6 out of 5 stars 545 customer reviews
| 32 answered questions
About the Product
  • Vitamin K plays a critical role in maintaining healthy bone density by facilitating the transport of calcium from the bloodstream into the bone
  • It is also required by calcium-regulating proteins in the arteries
  • As people age, even a subclinical vitamin K deficiency can pose risks to the vascular system

Frequently Bought Together

  • Life Extension Super K with Advanced K2 Complex 90 softgels
  • +
  • Solaray C Two-Stage Timed Release Supplement, 1000mg, 250 Count
  • +
  • Jarrow Formulas Krill Oil, Supports Brain, Memory, Energy, Cardiovascular Health, 60 Softgels
Total price: $54.51
Buy the selected items together


Product Description

Size: 90

Life Extension Super K with Advanced K2 Complex formula provides vitamin K1 and the MK-4 and MK-7 forms of vitamin K2 in just one daily softgel. The virtue of this formula is that it provides the precise amount of the long-acting MK-7 form of vitamin K2 that recent human studies have shown provides optimal K2 levels over a 24-hour period. The MK-4 is included to provide the rapid increase in vitamin K blood levels that may account for its beneficial effects in certain studies. Vitamin K2 have been extensively researched and the findings reveal vastly improved effects compared to K1.

Product Details

Size: 90
  • Product Dimensions: 7 x 6 x 5 inches ; 0.5 ounces
  • Shipping Weight: 0.8 ounces (View shipping rates and policies)
  • Domestic 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.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004GW4S0G
  • UPC: 737870924098 737870172499
  • Item model number: 737870172499
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (545 customer reviews)
  • Amazon Best Sellers Rank: #427 in Health & Personal Care (See Top 100 in Health & Personal Care)

Important Information

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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

Top Customer Reviews

By RWM TOP 50 REVIEWER on May 8, 2013
Size: 90 Verified Purchase
***
Here is a side-by-side comparison of ten leading Vitamin K-2 supplements: Innovix Labs Full Spectrum Vitamin 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-4).

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?
Read more ›
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Size: 90
This supplement contains 1000 mcg K1, 1000 mcg K2 as MK-4, and 100 mcg K2 as MK-7, for a total of 2100 mcg or 2625% of the RDA. Some preliminary studies suggest that K2/MK-4 and K2/MK-7 promote bone strength and may be helpful in the treatment of osteoporosis. This is one of the few supplements that contains MK-4, which is used as an osteoporosis treatment in Japan, although at higher doses than contained here (~45 mg/day). MK-7 is made from fermented soybeans (natto), which may be an issue for some people. Vitamin K interacts with blood thinning medications and the product label also warns that it contains tree nuts (coconuts). The serum half-life of MK-7 is several days whereas the half-life of MK-4 is only several hours, so optimal dosing of the latter may involve several doses a day (in which case one might want to consider Thorne Research Vitamin K2 liquid).
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Size: 90 Verified Purchase
Vitamin K2 is amazing! After taking it for a week, I noticed that the calcium deposits at my gum line WERE GONE! If it's doing this well on my teeth, I can only imagine the beneficial effects its having on the valves of my heart. Fantastic product! Thank you Suzanne Somers for mentioning it in your books!
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By Suz on February 25, 2011
Size: 90 Verified Purchase
Heads up for anyone who is soy or estrogen sensitive.
I purchased this brand as it stated "contains No soybeans" and I am estrogen sensitive. After taking it for a little over a week I noticed continually worsening soreness and pain in my breasts. I contacted the manufacturer and was advised that one of the K2 ingredients did come from Natto (which comes from fermented soybeans) and would be a phytoestrogen.
I am sure the product is great for anyone that is not estrogen sensitive. I did like the small size of the capsule. They were also very nice on the phone for advice. I did not buy this direct from their company and so cannot return it for a refund.
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Size: 90 Verified Purchase
My 12 year old use to tease me about my yellow teeth. I started this with Vitamin D3 and magnesium, PLUS eating well (low carb Primal plus some whole fat dairy) and within a month my teeth became white. My child agrees that my teeth are no longer yellow.
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Size: 90
Dr Sinatra (cardiologist and author) calls this the most important Vitamin of the decade. It helps carry calcium out of the arteries (plaque) and into the bones and teeth.
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Size: 90 Verified Purchase
If you are taking vitamin D, you need this product.
If you are supplementing with magnesium and calcium you absolutely should be taking this.
Vitamin D helps calcium get into you system, Vitamin K tells the calcium where it should go and keeps it from depositing where it shouldn't .
There is quite a bit of science behind it, I just simplified it, just google it.
Great product
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Size: 90 Verified Purchase
Finally a vitamin supplement with NO additives, fillers, magnesium stearate, soy lecithin or other chemical by products. "LifeExtension" and "Pure Encapsulations" are the top two manufacturers on my list for "pure," high quality vitamin supplements.
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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.