A synthetic form of this substance available over the counter is called menadione (MEH-nuh-di-ohn) and all types of this substance contain a methylated (MEH-thih-lay-tud) naphthoquinone (naaf-thoh-KWI
A synthetic form of this substance available over the counter is called menadione (MEH-nuh-di-ohn) and all types of this substance contain a methylated (MEH-thih-lay-tud) naphthoquinone (naaf-thoh-KWI-nohn) ring. Much of the daily requirement of this substance is supplied by E. coli in the large intestine, explaining why newborns often receive an injection of this vitamin. Its effect is opposed by warfarin, which prevents this vitamin from participat- ing in the formation of prothrombin. Found in leafy green vegetables, name this fat-soluble vitamin necessary for the synthesis of blood clotting factors.
A synthetic form of this substance available over the counter is called menadione (MEH-nuh-di-ohn) and all types of this substance contain a methylated (MEH-thih-lay-tud) naphthoquinone (naaf-thoh-KWI-nohn) ring.
vitamin {K} [accept {phylloquinone}; accept {phytomenadione}; accept {phytonadione}]