Phytonadione (Oral) (Mephyton) - Drugs Information, Side Effects, & Interactions

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Phytonadione (fye-toe-na-DYE-one)

Treats blood clotting problems.

Mephyton
There may be other brand names for this medicine.

You should not use this medicine if you have had an allergic reaction to phytonadione.

Tablet

Your doctor will tell you how much of this medicine to take and how often. Do not take more medicine or take it more often than your doctor tells you to.
Your may need to take other medicines along with phytonadione as a part of your treatment. Take all these medicines as directed.
Never share your medicine with anyone.

If a dose is missed:

If you miss a dose or forget to take your medicine, take it as soon as you can. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose.
Do not use extra medicine to make up for a missed dose.

Store the medicine at room temperature in a closed container, away from heat, moisture, and direct light.
Keep all medicine away from children.

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Make sure your doctor knows if you are also using a blood thinner such as warfarin (Coumadin®).

Make sure your doctor knows if you are pregnant or breastfeeding, or if you have had problems with blot clots, such as stroke, TIA, or an embolism.
Your doctor will need to check your blood at regular visits while you are using this medicine. Be sure to keep all appointments.

Call your doctor right away if you notice any of these side effects:

Allergic reaction: Itching or hives, swelling in face or hands, swelling or tingling in the mouth or throat, tightness in chest, trouble breathing
Severe headache, sudden vision changes
Sharp pain in your chest or lower leg (calf)
Trouble breathing

If you notice these less serious side effects, talk with your doctor:

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