Phytonadione is a man-made form of vitamin K, which occurs naturally in the body.

Phytonadione is used to treat vitamin K deficiency and to treat certain bleeding or blood clotting problems.

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  • Mephyton, Vitamin K
  • Less common - With menadiol or high doses of phytonadione in newborns
    Decreased appetite
    decreased movement or activity
    difficulty in breathing
    enlarged liver
    general body swelling
    muscle stiffness
    yellow eyes or skin
    Rare - With injection only
    Difficulty in swallowing
    fast or irregular breathing
    lightheadedness or fainting
    shortness of breath
    skin rash, hives and/or itching
    swelling of eyelids, face, or lips
    tightness in chest
    troubled breathing and/or wheezing
    Blue color or flushing or redness of skin
    fast and/or weak heartbeat
    increased sweating
    low blood pressure (temporary)
    Some of the side effects that can occur with phytonadione may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    Less common
    Flushing of face
    redness, pain, or swelling at place of injection
    skin lesions at place of injection (rare)
    unusual taste
  • (phytonadione) tablet