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Phytonadione is a synthetic form of Vitamin K1. It works by providing the liver with the Vitamin K it needs to produce clotting factors II, VII, IX, and X. Without adequate Vitamin K, these clotting factors cannot be activated, which leads to a higher risk of bleeding. Phytonadione restores this process.

Phytonadione is used to treat Vitamin K deficiency, which can cause excessive bleeding or bruising, elevated INR, and prolonged prothrombin time. It is also used to reverse the effects of certain anticoagulant medications that work by blocking Vitamin K, such as warfarin, under physician supervision.

Phytonadione is available in oral tablet form and injectable form. For outpatient management of deficiency, oral dosing is most common. Your physician will determine the appropriate dose and duration based on your lab results, symptoms, and underlying cause of deficiency.

Oral Phytonadione typically begins to improve clotting factor levels within 6 to 12 hours, with more significant effects seen within 24 hours. Laboratory values such as INR and prothrombin time are usually re-checked after treatment to confirm response.

Yes. Phytonadione can counteract the anticoagulant effects of warfarin (Coumadin). Patients on warfarin who are prescribed Phytonadione require careful INR monitoring. Certain antibiotics, mineral oil, and bile acid sequestrants can also affect Vitamin K absorption. Always inform your physician of all medications you are taking.

Oral Phytonadione is generally well tolerated. Some patients may experience mild gastrointestinal upset, including nausea. Rare hypersensitivity reactions have been reported, particularly with injectable forms. Contact your physician if you experience any unusual symptoms after starting treatment.

Doctronic uses an AI-powered evaluation to gather detailed information about your symptoms, health history, and medications. A licensed physician then reviews your case, makes a clinical determination, and creates a personalized treatment plan, which may include a prescription if appropriate.

Yes. Doctronic connects you with licensed physicians who are board-eligible or board-certified in their specialties. All care is doctor-reviewed, regularly audited for quality, and conducted on a HIPAA-compliant platform to protect your health information. Doctronic is available to adults 18 and older in any U.S. state.