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Ardeparin (Systemic)

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Ardeparin (Systemic)

US Brand Names

• Normiflo


Ardeparin (ar-dee-PA-rin) is used to prevent deep venous thrombosis, a condition in which harmful blood clots form in the blood vessels of the legs. These blood clots can travel to the lungs and can become lodged in the blood vessels of the lungs, causing a condition called pulmonary embolism. Ardeparin is used for several days after knee replacement surgery, while you are unable to walk. It is during this time that blood clots are most likely to form. Ardeparin also may be used for other conditions as determined by your doctor.

Ardeparin is available only with your doctor's prescription, in the following dosage form:


    • Injection (U.S.)

Special Considerations

In deciding to use a medicine, the risks of using the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For ardeparin, the following should be considered:


Tell your doctor if you have ever had any unusual or allergic reaction to ardeparin or heparin. Also tell your health care professional if you are allergic to any other substances, such as foods, especially pork or pork products, preservatives, or dyes.


Ardeparin has not been studied in pregnant women. However, it has been found to cause birth defects in animals. Discuss these possible effects with your doctor.


It is not known whether this medicine passes into breast milk. Although most medicines pass into breast milk in small amounts, many of them may be used safely while breast-feeding. Mothers who are using this medicine and who wish to breast-feed should discuss this with their doctor.


Studies on this medicine have been done only in adult patients, and there is no specific information comparing use of ardeparin in children with use in other age groups.

Older adults

This medicine has been tested and has not been shown to cause different side effects or problems in older people than it does in younger adults.

Other medicines

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your health care professional if you are using any other prescription or nonprescription (over-the-counter [OTC]) medicine.

Other medical problems

The presence of other medical problems may affect the use of ardeparin. Make sure you tell your doctor if you have any other medical problems, especially:

    • Bleeding problems or

    • Eye problems caused by diabetes or high blood pressure or

    • Heart infection or

    • High blood pressure (hypertension) or

    • Kidney disease or

    • Liver disease or

    • Stomach or intestinal ulcer (active) or

    • Stroke-The risk of bleeding may be increased

Also, tell your doctor if you have received ardeparin or heparin before and had a reaction to either of them called thrombocytopenia (a low platelet count in the blood), or if new blood clots formed while you were receiving the medicine.

In addition, tell your doctor if you have recently had medical surgery . This may increase the risk of serious bleeding when you are taking ardeparin.


If you are using ardeparin at home, your health care professional will teach you how to inject yourself with the medicine. Be sure to follow the directions carefully. Check with your health care professional if you have any problems using the medicine .

Put used syringes in a puncture-resistant, disposable container , or dispose of them as directed by your health care professional.


The dose of ardeparin will be different for different patients. Follow your doctor's orders or the directions on the label . The following information includes only the average doses of ardeparin. If your dose is different, do not change it unless your doctor tells you to do so. The dose you receive will be based on your body weight.

    • For injection dosage form:

      o For prevention of deep venous thrombosis (leg clots) and pulmonary embolism (lung clots):

        Adults-The dose is given every twelve hours for up to fourteen days after surgery.

        Children-Use and dose must be determined by your doctor.

Missed dose

If you miss a dose of this medicine, use it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.


To store this medicine:

    • Keep out of the reach of children.

    • Store away from heat and direct light.

    • Keep the medicine from freezing. Do not refrigerate.

    • Do not keep outdated medicine or medicine no longer needed. Be sure that any discarded medicine is out of the reach of children.


Tell all your medical doctors and dentists that you are using this medicine .

Check with your doctor immediately if you notice any of the following side effects:

    • Bruising or bleeding, especially bleeding that is hard to stop. Bleeding inside the body sometimes appears as bloody or black, tarry stools, or faintness.

    • Back pain; burning, pricking, tickling, or tingling sensation; leg weakness; numbness; paralysis; or problems with bowel or bladder function.

Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Stop using this medicine and check with your doctor immediately if any of the following side effects occur:

Less common

Bleeding gums; coughing up blood; deep, dark purple bruise, pain, or swelling at place of injection; difficulty in breathing or swallowing; dizziness; headache; increased menstrual flow or vaginal bleeding; nosebleeds; paralysis; prolonged bleeding from cuts; red or dark brown urine; red or black, tarry stools; shortness of breath; unexplained pain, swelling, or discomfort, especially in the chest, abdomen, joints, or muscles; unusual bruising; vomiting of blood or coffee ground-like material; weakness.


Back pain; burning, pricking, tickling, or tingling sensation; leg weakness; numbness; problems with bowel or bladder function; rash consisting of pinpoint, purple-red spots, often beginning on the legs.

Also, check with your doctor as soon as possible if any of the following side effects occur:

Less common



Skin rash, hives, or itching.

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

Less common

Nausea; pain at injection site; vomiting.

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.

July 10, 1998

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