Assertion: vitamin c's effect | /r/CapableOf | donate electron
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text: Reported adverse effects: Increased risk of hemorrhagic effects with more than the upper limit of 1,500 IU/day of the natural form or 1,100 IU/day of the synthetic form Vitamin K* Cofactor for enzymes involved in blood clotting and bone metabolism; acts as an antioxidant; can donate electrons Not studied individually No safety concerns for phytonadione (K1) or menaquinone (K2) supplements