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What Is Jantoven?

Jantoven is used to treat blood clots (such as in deep vein thrombosis-DVT or pulmonary embolus-PE) and to prevent new clots from forming in your body. Preventing harmful blood clots helps to reduce the risk of a stroke or heart attack. Conditions that increase your risk of developing blood clots include a certain type of irregular heart rhythm, heart valve replacement, recent heart attack, and certain surgeries (such as hip/knee replacement). Jantoven is commonly called a "blood thinner," but the more correct term is "anticoagulant." It helps to keep blood flowing smoothly in your body by decreasing the amount of certain substances in your blood.

Before taking this medicine

You should not take Jantoven if you are allergic to it, or if:

  • you have very high blood pressure;
  • you recently had or will have surgery on your brain, spine, or eye;
  • you undergo a spinal tap or spinal anesthesia (epidural); or

You also should not take Jantoven if you are prone to bleeding because of a medical condition, such as:

  • a blood cell disorder;
  • ulcers or bleeding in your stomach, intestines, lungs, or urinary tract;
  • an aneurysm or bleeding in the brain;

Side Effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Also, stop using warfarin and call your doctor at once if you have a serious side effect such as:

  • pain, swelling, hot or cold feeling, skin changes;
  • sudden and severe leg or foot pain, foot ulcer, purple toes or fingers;
  • sudden headache, dizziness, or weakness;
  • unusual bleeding and bleeding from wounds or needle.

How to use Jantoven

Always make sure to read the Medication Guide provided by your pharmacist before you start taking Jantoven and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth with or without food as directed by your doctor or other health care professional. It is very important to take it exactly as directed. Do not increase the dose, take it more frequently, or stop using it unless directed by your doctor.

Dosage is based on your medical condition, laboratory tests and response to treatment. Your doctor or other health care provider will monitor you closely while you are taking this medication to determine the right dose for you.

What should I avoid while taking Jantoven?

Avoid activities that may increase your risk of bleeding or injury. Use extra care to prevent bleeding while shaving or brushing your teeth. You may still bleed more easily for several days after you stop taking Jantoven.

Avoid making any changes in your diet without first talking to your doctor. Foods that are high in vitamin K (liver, leafy green vegetables, or vegetable oils) can make Jantoven less effective. In case these foods are part of your diet, eat a consistent amount on a weekly basis.

Grapefruit juice, cranberry juice, noni juice, and pomegranate juice may interact with Jantoven and lead to unwanted side effects. Avoid the use of these juice products while taking this medicine.

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. Always consult your doctor to ensure the information displayed on this page applies to your personal circumstances.