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  • Life Extension Super K with Advanced K2 Complex Softgels, 90-Count
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Life Extension Super K with Advanced K2 Complex Softgels, 90-Count

380 customer reviews
| 23 answered questions

List Price: $28.30
Price: $20.60 ($0.23 / Count) & FREE Shipping on orders over $35. Details
You Save: $7.70 (27%)
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
90
  • Serving Size - 1 softgel
  • Dietary Supplement
  • Promotes Arterial Health and Healthy Bones

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Frequently Bought Together

Life Extension Super K with Advanced K2 Complex Softgels, 90-Count + Life Extension Vitamin D3, 5000 IU, 60 Softgels
Price for both: $28.85

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Product Description

Size: 90

Contains no milk, egg, fish, peanuts, crustacean shellfish (lobster, crab, shrimp), soybeans, wheat, yeast, gluten, corn, or rice. Contains no sugar, and no artificial sweeteners, flavors, colors, or preservatives

Product Details

Size: 90
  • Product Dimensions: 7 x 6 x 5 inches
  • 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
  • Origin: Andorra
  • ASIN: B004GW4S0G
  • UPC: 737870172499 737870924098 737870122494
  • Item model number: 737870172499
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (380 customer reviews)
  • Amazon Best Sellers Rank: #299 in Health & Personal Care (See Top 100 in Health & Personal Care)
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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

753 of 770 people found the following review helpful 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 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?
Read more ›
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200 of 212 people found the following review helpful By slm on August 5, 2012
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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119 of 128 people found the following review helpful By peteyy on December 18, 2012
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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233 of 257 people found the following review helpful 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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87 of 93 people found the following review helpful By J. Oswald on February 14, 2012
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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86 of 93 people found the following review helpful By S. Smith on July 7, 2010
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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28 of 28 people found the following review helpful By BPR on October 17, 2013
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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75 of 84 people found the following review helpful By Michael Sinclair on January 9, 2013
Size: 90 Verified Purchase
if you are trying to take Vitamin K-2 to help with osteopenia or osteoporosis, then this is the product I recommend for my patients. It has both MK-4 and MK-7 forms of vitamin K2 (fast acting and long acting) as well as Vitamin K1. I have never had anybody complain of side effects. WARNING: If you are on coumadin or warfarin, this product will reduce the effect of your coumadin or warfarin.....check with your doctor before you take this.
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Life Extension Super K with Advanced K2 Complex Softgels, 90-Count
This item: Life Extension Super K with Advanced K2 Complex Softgels, 90-Count
Price: $20.60
Ships from and sold by Amazon.com
Want to discover more products? Check out these pages to see more: prenatals, energy supplements, mens vitamins, prenatal vitamins, daily vitamin, multiple, prenatal vitamin

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.