Phytonadione, a form of Vitamin K1 , is used to treat or prevent vitamin K deficiency, manage bleeding disorders, and reverse the effects of blood-thinning medications like warfarin. Consumer information about the prescription drug vitamin K -1, phytonadione (Mephyton) used to treat hypoprothrombinemia and bleeding caused by warfarin (Coumadin). Side effects, warnings and precautions, dosing, storage, and pregnancy and breastfeeding are provided. What if you want to buy an FMCG product but are not sure which one? You cannot expect the pharmacist to give you too many options. Apollo Pharmacy is the solution to all these. Injek 1mg Injection is a medicine used to treat vitamin K deficiency in the body. It helps in improving conditions caused due to low levels of vitamin K in the body. Vitamin K is an important nutrient that is necessary for blood clotting and bone metabolism.