Vitamin K - WebMD

Nov 29, 2007 · New research reveals that vitamin K controls calcium, keeping it in your bones and out of your blood vessels. In nature, vitamin K is found in primarily in two forms – K1 (phylloquinone) and K2 (menaquinone). K1 is the form in which vitamin K produces clotting factors.…

Vitamin K Side Effects: Common, Severe, Long Term - Drugs.com

Jul 28, 2019 · Note: This document contains side effect information about phytonadione. Some of the dosage forms listed on this page may not apply to the brand name Vitamin K.. For the Consumer. Applies to phytonadione: capsule, tablet. Other dosage forms: injection emulsion, injection solution; Along with its needed effects, phytonadione (the active ingredient contained in Vitamin K) may cause some ……