Though most people are aware of vitamin K, it’s less well-known that there are actually two main forms of this vitamin: phylloquinone (K1) and menaquinone (K2). Do you know the differences between them?
There are two main forms of natural vitamin K: phylloquinone (K1) and menaquinone (K2). Vitamin K1 is primarily found in green leafy vegetables and plays a role in blood coagulation, while vitamin K2 is mainly produced by gut microbiota and is essential for healthy arteries and bones. They are both absorbed in the small intestine.
Phylloquinone is essential to the circulatory system: without it, the liver is unable to produce the molecules that ensure coagulation of the blood (1). Serious K1 deficiency poses a risk of haemorrhage while in contrast, certain anticoagulant treatments are vitamin K antagonists – they work by reducing its blood-clotting action.
Vitamin K1 is found in green vegetables (spinach, cabbage, lettuce, broccoli …), and soya and rapeseed oils.
Like vitamin K1, vitamin K2 is a protein activator, and participates in blood coagulation (2). But it is more often recognised for its essential role in maintaining arterial flexibility (3). Menaquinone activates matrix Gla-protein (MGP), which contributes to the elimination of calcium in the arteries, thus helping to prevent calcification and associated risks such as hypertension.
Its role in calcium metabolism also means it is able to protect bone density (4), particularly in at-risk groups (menopausal women, infants): without vitamin K2, calcium would not be taken up by the protein osteocalcin for subsequent binding to, and strengthening of, the bone matrix.
Due to its chemical structure, it remains in the blood longer - a few days rather than a few hours in the case for vitamin K1 - and therefore has longer-lasting effects (5).
Vitamin K2 is produced in the body from bacteria present in the gut. It’s also found in highly-fermented foods such as sauerkraut, natto (a Japanese food based on fermented soya beans), cheese, liver, yogurt, and of course, dietary supplements. The Supersmart catalogue offers the only form of vitamin K2 able to produce an 8-fold increase in vitamin K blood levels: MK-7 90 mcg. It comes in the form of softgels for maximum absorption, and is combined with vitamin D for scientifically-supported synergistic effects!
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72 Days
Reliable delivery. Good product.
Viva
85 Days
Great service
cl
87 Days
Received product promptly and its early days but seems to have improved my daughters alertness.
Anandi
97 Days
Amazing, great product!
ALEX Sinclair
100 Days
Good products and Swift handling
Trusted
106 Days
I trust the company's products, the quality is trustworthy and the speed of delivery is also appreciated.
NAJIB Malaah
106 Days
This company is serious when it comes to serving it's customers. They are fast to send out the orders. Their site is great and easy. Also, they treat their return customers with great deals and discounts. Keep up the good work.
ABDULQADER Jehad
107 Days
I know frech ( level 3 of 6) and can read your messages, but since order are official documents I'd like to have this in english. Merci Ursula Mathes
Ursula Mathes
111 Days
Box was intact, content correct but delivery time was 12 days. I started to worry!
VIITANEN Esa
113 Days
The company has provided the required product efficiently with no complications.
OldBear
115 Days
Supersmart sell a lot of interesting stuff. More than jut the usual vitamins though they do all those as well. Ordering pretty straightforward - you may need to try a couple of times to get the offers to apply but they do work. I queried something and had a fairly quick sensible reply. Postage takes a couple if days but you do get good progress information. Very well packed. Bought from Supersmart a few times and will do so again.
AT Griffin
3 Hours
Je découvre cette marque. Livraison propre et rapide
Dimitri
5 Hours
Über die Produktpalette des Nahrungsergänzungsmittelergänzungs Herstellers, SuperSmart, kann ich nichts negatives berichten. Ich bin schon viele Jahre Kunde bei diesem Unternehmen. Die einzelnen Produkte sei es für Herz,Lunge,Augen,Sport und Ausdauer und andere körperlicheBefindlichkeiten Haben sich bei mir immer positiv entwickelt. Ich möchte diese Produkte nicht mehr missen. Die Lieferung ist auch in 1 bis2Tagen erledigt. Rund um gesagt alles in bester Ordnung.
juer
9 Days
Gute Produkte, aber ziemlich hochpreisig.
Sascha Jurek
9 Days
Toujours satisfaite malgré le prix .mais c'est pour ma santé donc bon....si ça marche c'est ok
Nyanko-Sadida Mashmallow