Vitamin Ok has a wonderful security profile, even at excessive doses. Actually, the Nationwide Academies Meals and Vitamin Board didn’t even designate an higher restrict for vitamin K1 or K2. That’s as a result of no adverse effects have been documented from both type of vitamin Ok in people or animal fashions when it’s consumed through meals or dietary supplements.
Do not forget that your each day wants for vitamin Ok are 90 to 120 mcg relying in your gender. To place this suggestion in perspective, one-half cup of collard greens will ship over 500 mcg of vitamin K1, and three ounces of nattō pack a vitamin K2 punch at 850 mcg. Dietary supplements can ship a spread of vitamin K1 and K2 doses on prime of what you devour out of your eating regimen.
Whereas safety is excellent for vitamin K2 (and K1), it’s all the time prudent to debate any main eating regimen or complement adjustments along with your physician, particularly when you have a well being situation or are taking any drugs.
Anticoagulants and vitamin Ok are a well-known drug-nutrient interplay. For that reason, some sufferers on anticoagulants assume they need to restrict all sources of vitamin Ok. That is an unlucky mistake that may create a vitamin Ok hole or deficiency.
When taking blood-thinning drugs, the necessary factor is to maintain vitamin Ok inputs secure (not low). If a affected person on blood thinners desires to include vitamin Ok-dense meals (wholesome meals!) into their eating regimen or take a complement containing vitamin K1 or K2, they need to inform their physician first. The healthcare practitioner will monitor key blood clotting biomarkers and alter the medicine accordingly.