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Life Extension Super K with Advanced K2 Complex 90 softgels
- 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
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Top Customer Reviews
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-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 ›
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.
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.
Most Recent Customer Reviews
Small and easy to swallow. I will not know how well the product worked till my next physical .Published 16 hours ago by Judy Ryan
As a Celiac patient, I need the Super K for vitamin deficiencies and for my bones. Good quality product and no gluten.Published 2 days ago by Shiratha
Good product, I will order this one. It is processed to work well in the body.Published 5 days ago by P. A.
i took this. i do like life extention. i remember them years ago and followed there pholosophy. the Ks were good.Published 7 days ago by patricia jordon
Not too bad to swallow. I'm leaning towards over middle age and my friend said I need this as well as high powered calcium supplements so I figured I better get them. Read morePublished 10 days ago by P. Schindler
I take one calcium + vitamin D gummy with the vitamin k which can supposedly increase absorption. I will never miss a dose, I'm very, very thankful for this stuff. Read morePublished 13 days ago by Franco Lucchesi