Topics created by fruitfly

@sphagnum said in Vitamin K and constipation:

what is considered to be a high dose of K?

High dose Vit K can interfere with Vit E
They are all fat-soluble vitamins and can compete with each other for absorption into the micelle. Vitamins A and E are antagonists of vitamin K because they interfere with its absorption and metabolism.
Taking a high dose Vit K2 requires transporters that are in limited amount for transport in circulating lipoproteins for subsequent uptake by tissues.
How much is too much is not clearly defined.
By the way excess Vit E, K and Q10 leaves quinones but our liver has a limited capacity to deal with.
I never take Vit A supplement at the same time as the other lipovitamins.

@questforhealth the problem seems to be that you’ll never approach 1mg of vitamin K2 from most foods. The most concentrated source is natto and even though it does have about 600mcg per the most common serving size, most people here won’t touch it because it’s a soybean food containing significant PUFA; also the form is MK-7 not MK-4, which is viewed as a disadvantage by most