What should I know about phytonadione before taking it?

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If you are allergic to phytonadione or any other medications, tell your doctor before you take the medication. Certain medications can interact with this drug. Tell your doctor if you are taking any over-the-counter medicines, vitamins, herbs, supplements or prescription drugs, especially blood thinners, such as warfarin; salicylates, such as aspirin; over-the-counter pain relievers; nonsteroidal anti-inflammatories (NSAIDs), such as ibuprofen and naproxen; antibiotics; mineral oil; and a drug named orlistat.

Before taking phytonadione, speak to your doctor about your diet and your history of medical conditions. You should not restrict or increase your intake of foods rich in vitamin K while you are taking this medicine.