OP mentioned K2, which is not the same as K. K2 is found in grass-fed animal products (meat, milk, cheese, butter, etc), so most Americans have zero K2 in their diet. When faced with the choice of pasture-raised animal products vs organic animal products, you may want to choose the pasture raised products because those products will have K2, whereas animals that are fed organic grains will not contain K2.
Yes, K comes in several forms (as does vitamin E, for instance) and it's smart to get K1 and at least one variety of K2.
The Vitamin K product in the link I posted includes
Vitamin K1 (as phytonadione)
1500 mcg
Vitamin K2 (as menaquinone-4)
1000 mcg
Vitamin K2 (as trans menaquinone-7)
100 mcg
and LEF offers additional versions, including a straight K2 (as menaquinone-4) with 45,000 mcg -- the amount used as an Rx medication in Japan to improve bone density, and a low-dose version for those on blood thinners (see your doctor before taking K supplements if on those).
The caveat is still warranted, but they offer the product because A) the dangers of NO vitamin K are substantial and B) some doctors prefer their patients on blood thinners to get at least a small dose of the vitamin.
OP mentioned K2, which is not the same as K. K2 is found in grass-fed animal products (meat, milk, cheese, butter, etc), so most Americans have zero K2 in their diet. When faced with the choice of pasture-raised animal products vs organic animal products, you may want to choose the pasture raised products because those products will have K2, whereas animals that are fed organic grains will not contain K2.
Yes, K comes in several forms (as does vitamin E, for instance) and it's smart to get K1 and at least one variety of K2.
The Vitamin K product in the link I posted includes
Vitamin K1 (as phytonadione) 1500 mcg Vitamin K2 (as menaquinone-4) 1000 mcg Vitamin K2 (as trans menaquinone-7) 100 mcg
and LEF offers additional versions, including a straight K2 (as menaquinone-4) with 45,000 mcg -- the amount used as an Rx medication in Japan to improve bone density, and a low-dose version for those on blood thinners (see your doctor before taking K supplements if on those).
It should be strongly advised anyone with blood disorders or taking blood thinners should not take vitamin K!
I understand the issues, which is why I added the caveat, but LEF's low-dose vitamin K is not 45,000 mcg or even 1000 mcg but just 45 mcg -- less than in a cup of Romaine lettuce.
The caveat is still warranted, but they offer the product because A) the dangers of NO vitamin K are substantial and B) some doctors prefer their patients on blood thinners to get at least a small dose of the vitamin.