Adequate vitamin K consumption is important for good health ... In high concentrations, this substance can cause harmful effects to those with reduced kidney function. Spinach is rich in iron ...

Why it matters: Scientists at Cold Spring Harbor Laboratory have discovered that menadione, a vitamin K precursor ... The supplement: Has minimal side effects when taken by mouth Is already ...

since the more recently recognized action of vitamin K is that it acts as an antioxidant,” remarked JoEllen Welsh, a nutritional biochemist at the University of Albany who was not involved in the ...

Vitamin K supplementation may serve as a nocturnal leg cramps treatment reducing frequency, intensity, and duration in older adults.

Doing so can release all of the drug at once, increasing the risk of side effects. If you are taking ... tests (such as complete blood count, vitamin B12 levels) may be done while you are taking ...