What are the possible side effects of phytonadione (Mephyton, Vitamin K1)?
Seek emergency medical attention or contact your doctor immediately if you experience any serious side effects from phytonadione such as: • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); • dizziness; • fast or irregular heartbeats; or • increased sweating. Other less serious side effects may be more likely to occur. Continue to use phytonadione and talk to your doctor if you experience • flushing of the face; • an unusual taste in the mouth; or • pain or irritation at the injection site (injectable form). This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to FDA at 1-800-FDA-1088. What is the most important information I should know about phytonadione (Mephyton, Vitamin K1)?
