Vitamin K1 (Phytonadione)

Vitamin K1 (Phytonadione) is a prescription medication used as a supplement in people with vitamin K deficiency. Vitamin K is an essential vitamin the body needs for important processes like blood clotting and bone building. Low levels of blood clotting factors increase the risk of unusual bleeding. Vitamin K occurs naturally in leafy green vegetables and broccoli. The active ingredient in Vitamin K1 is Phytonadione. Phytonadione belongs to a class of drugs called vitamins. It works by providing the body with vitamin K needed for blood clotting. Phytonadione is a man-made (synthetic) form of vitamin K.

Manufacturer Information

Get medical help immediately if you have any of these signs or an allergic reaction while using Vitamin K1. The most common side effects of Vitamin K1 may include the following:
• Dizziness;
• Flushing;
• Pain or swelling at the injection site;
• Sweating

Contact your doctor right away if you have any of the severe side effects, including:
• Breathing difficulties;
• Light-headedness;
• Skin redness, itching, or a hard lump at the injection site;
• Weak but rapid pulse

These are not all of the side effects of Vitamin K1. Always contact your doctor if you notice any unusual symptoms.

You should not use Vitamin K1 if you are allergic to Phytonadione or any ingredient in Vitamin K1. Before you start using this medication, tell your doctor about your medical history, especially if you:
• Are breastfeeding or planning to breastfeed;
• Are pregnant or planning to be pregnant;
• Have blood disorders;
• Have ever had liver disease;
• Have kidney disease

Tell your doctor about all your medications, including prescription, OTC, herbal supplements, and vitamins. There may be drug interactions between Vitamin K1 and blood thinners like warfarin, Coumadin, jantoven, etc. Tell your doctor if you are pregnant or planning to become pregnant. It is not known if Vitamin K1 will harm a fetus. Inform your doctor if you are breastfeeding or planning to breastfeed. It is not known if vitamin K1 is excreted in breast milk. High doses of vitamin K in breast milk may harm nursing infants. Use Vitamin K1 precisely as prescribed by your doctor. Your doctor will inject Phytonadione into a muscle, under your skin, or as an infusion into a vein. If you are administering this medication to yourself at home, your doctor will teach you the preparation and all usage instructions. Keep this medicine in its original container and tightly closed out of sight and reach of children. Store at room temperature, away from heat and moisture.

Check out our latest Blog Post