Phytomenadione
chemical compound
Phytomenadione, also known as vitamin K1, phylloquinone, or phytonadione, is a vitamin found in food and used as a dietary supplement. It is on the World Health Organization's List of Essential Medicines.
It is used to treat certain bleeding disorders, including warfarin overdose, vitamin K deficiency, and obstructive jaundice. Use is typically recommended by mouth, intramuscular injection or injection under the skin. When given by injection benefits are seen within two hours. It is also recommended for preventing and treating vitamin K deficiency bleeding in infants. Many countries in the world choose intramuscular injections in newborn to keep them safe from vitamin K deficiency bleeding. It is considered a safe treatment and saves many children from death and severe neurologic deficit every year.
Side effects when given by injection may include pain at the site of injection. Severe allergic reactions may occur when it is injected into a vein or muscle, but this has mainly happened when large doses of a certain type of supplement containing castor oil were given intravenously.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q186093. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Phytomenadione” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.