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Life Extension Super K with Advanced K2 Complex

| 6 answered questions

List Price: $28.30
Price: $18.45 ($0.21 / count) & FREE Shipping on orders over $35. Details
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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 + Jarrow Formulations Krill Oil, 60 Softgels
Price for both: $34.34

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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 ; 2.1 ounces
  • Shipping Weight: 2.4 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: B004GW4S0G
  • UPC: 737870172499 737870122494
  • Item model number: 737870172499
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (92 customer reviews)
  • Amazon Best Sellers Rank: #387 in Health & Personal Care (See Top 100 in Health & Personal Care)
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Customer Questions & Answers

Customer Reviews

4.4 out of 5 stars
5 star
67
4 star
12
3 star
6
2 star
0
1 star
7
See all 92 customer reviews
I trust Life Extension and take this vitamin K to cover all bases.
J. Haertling
In my mind, my experience speaks highly of the quality of Life Extension products.
ArtTee
This can cause hardening of the arteries, heart attacks and strokes.
RWM

Most Helpful Customer Reviews

264 of 267 people found the following review helpful By RWM TOP 50 REVIEWER on May 8, 2013
Size Name: 90 Verified Purchase
*****
Here is a side-by-side comparison of eight leading Vitamin K-2 supplements: Doctor's Best Natural 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, Solgar Natural Vitamin K2 (MK-7), and Thorne Research Vitamin K2 Liquid.

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 ›
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131 of 136 people found the following review helpful By slm on August 5, 2012
Size Name: 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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43 of 45 people found the following review helpful By J. Oswald on February 14, 2012
Size Name: 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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149 of 168 people found the following review helpful By Suz on February 25, 2011
Size Name: 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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55 of 60 people found the following review helpful By peteyy on December 18, 2012
Size Name: 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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30 of 31 people found the following review helpful By Michael Sinclair on January 9, 2013
Size Name: 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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45 of 49 people found the following review helpful By S. Smith on July 7, 2010
Size Name: 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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48 of 53 people found the following review helpful By Marilyn D. Kagan on April 9, 2010
Size Name: 90 Verified Purchase
Have you started on the road to osteoporosis? Do you have trouble with taking calcium? This is a product that has no calcium, but if one takes it for a year, and has a Dexa scan to compare, will strengthen your bones without the dangers that calcium has for you personally. A cousin of mine took this for a year and her Dexa shows that her bones have strengthened. I have calcium absorption problems, so I ran to the computer and ordered these capsules. It's only a few weeks, so I'll have to order a few more jars, and see what happens after a year, but from what I've read, it should help a lot. The capsules are small, and taste sweet. That alone is an advantage!
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