Vitamin K1 is primarily used in the medical field to treat and prevent blood clotting disorders. It is essential for the synthesis of certain proteins that help control bleeding and promote wound healing. Doctors often prescribe it for patients with conditions like vitamin K deficiency, which can lead to excessive bleeding, or for those on long-term antibiotic therapy that disrupts vitamin K production in the gut. It is also administered to newborns to prevent hemorrhagic disease, a condition caused by low levels of vitamin K at birth. In addition, Vitamin K1 is used in cases of overdose with anticoagulant medications like warfarin, as it helps reverse their effects and restore normal blood clotting. Outside of medicine, it is sometimes included in skincare products for its potential to reduce bruising and improve skin health.