phytonadione

Pronunciation: fye toe na DYE own

Brand: Mephyton, Vitamin K1

Mephyton 5 mg

slide 1 of 1, Mephyton 5 mg,

round, yellow, imprinted with MEPHYTON, MSD 43

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What is the most important information I should know about phytonadione?

Before using phytonadione tell your doctor about all your medical conditions or allergies, all medicines you use, and if you are pregnant or breast-feeding.

Never take phytonadione in larger amounts, or for longer than recommended by your doctor.

What is phytonadione?

Phytonadione is a man-made form of vitamin K, which occurs naturally in the body.

Phytonadione is used to treat vitamin K deficiency and to treat certain bleeding or blood clotting problems.

Phytonadione may also be used for purposes not listed in this medication guide.

What should I discuss with my healthcare provider before receiving phytonadione?

You should not be treated with phytonadione if you are allergic to it.

Before you receive phytonadione, tell your doctor about all your medical conditions or allergies.

To make sure you can safely take phytonadione, tell your doctor if you have liver disease.

It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

It is not known whether phytonadione passes into breast milk or if it could affect the nursing baby. Tell your doctor if you are breast-feeding.

How should I use phytonadione?

Follow all directions on your prescription label. Your doctor may occasionally change your dose. Never take this medicine in larger amounts, or for longer than prescribed.

Do not give a injection to a child without medical advice. Injectable phytonadione contains an ingredient that can cause serious side effects or death in very young infants or premature babies. Do not allow an older child to use this medicine without supervision of an adult.

While using phytonadione, you may need frequent blood tests.

If you need surgery or dental work, tell the surgeon or dentist ahead of time that you are using phytonadione.

Store at room temperature away from moisture and heat. Protect from light. Keep the medicine in the original container and tightly closed when not in use.

What happens if I miss a dose?

Call your doctor for instructions if you miss a dose of phytonadione.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking phytonadione?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

What are the possible side effects of phytonadione?

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • a light-headed feeling, like you might pass out;
  • blue colored lips;
  • trouble breathing;
  • weak but rapid pulse; or
  • skin redness, itching, or a hard lump where an injection was given.

Common side effects may include:

  • dizziness;
  • flushing (warmth, redness, or tingly feeling);
  • changes in your sense of taste;
  • sweating; or
  • pain or swelling where the medicine was injected.

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.

What other drugs will affect phytonadione?

Tell your doctor about all your current medicines and any you start or stop using, especially:

  • a blood thinner --warfarin, Coumadin, Jantoven.

This list is not complete. Other drugs may interact with phytonadione, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.

Where can I get more information?

Your pharmacist can provide more information about phytonadione.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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