Ingredient Science: Vitamin K1—Clotting Proteins, Bone Biology and Food Sources

Vitamin K1 (phylloquinone) is a fat-soluble vitamin that serves as a cofactor for proteins involved in normal blood clotting and bone metabolism.

Food sources and normal physiology

Leafy green vegetables are major dietary sources of vitamin K1. The body uses vitamin K-dependent enzymes to activate several proteins; this is a normal biochemical role and not a claim that taking extra vitamin K strengthens bones or prevents bleeding in otherwise healthy children.

A separate issue: newborn vitamin K

A routine children’s dietary supplement is not a substitute for newborn vitamin K prophylaxis. Newborn vitamin K administration is a separate pediatric preventive-care practice with its own evidence and dosing.

Medication interactions matter

Vitamin K can interact with vitamin K-antagonist anticoagulants such as warfarin. Children taking an anticoagulant or receiving specialized nutrition should follow their clinician’s instructions rather than independently changing vitamin K intake.

Where it appears in DocVites

In the current formulation architecture, vitamin K1 is included in DocVites Multivitamin Chewable Tablets. It is not part of the current DocVites infant multivitamin formula. The finished label controls the exact amount and form.

Educational information only. This article describes normal nutrient physiology and label context; it does not claim that a DocVites product diagnoses, treats, cures or prevents disease. Follow the finished product label and discuss individual supplementation questions with your child’s pediatrician.