K2 (mk-7) is a quinone. Often taken with vitamin D to help deliver calcium to bones and teeth, and away from soft tissues that can cause heart calcification and kidney stones. It may help with celiac's. Gluten depletes k2. K2 is important for proper clotting. So bruising, nose bleed, varicose veins can be helped with k2. Does it make sense that this quinone can help with clotting, and whatever "covid" is causes blood clotting issues? The "v". There are studies on k2 helping diabetes, and people with diabetes are more at risk with complications from "covid"? Vitamin D can prevent sickness, and it works with k2. K2 can be found in natto, chickpeas, leafy greens, sauerkraut, yogurt, fermented cheese.