Do not use this medication if you are allergic to heparin, or if you have:
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a severe lack of platelets in your blood; or
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uncontrolled bleeding.
Before using heparin, tell your doctor if you are allergic to any drugs, or if you have:
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an infection of the lining of your heart (also called bacterial endocarditis);
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uncontrolled high blood pressure;
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a bleeding or blood clotting disorder, such as hemophilia;
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a stomach or intestinal disorder;
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liver disease; or
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if you are having a menstrual period.
If you have any of these conditions, you may not be able to use heparin, or you may need a dosage adjustment or special tests during treatment.
FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Heparin does not pass into breast milk. However, do not use this medication without telling your doctor if you are breast-feeding a baby.
Women over 60 years of age may be more likely to have bleeding episodes while using heparin.
Heparin is given as an injection into your skin or through a needle placed into a vein. Your doctor, nurse, or other healthcare provider will give you this injection. You may be given instructions on how to use your injections at home.
Heparin must not be injected into a muscle.
Do not use this medicine at home if you do not fully understand how to give the injection and properly dispose of needles and other items used in giving the medicine.
Use each needle and syringe only one time. With your medicine you will receive a puncture-proof container for used needles and syringes. If you do not receive a container, ask your pharmacist for one. Keep this container out of the reach of children and pets. Your pharmacist can tell you how to properly dispose of the container.
To be sure this medication is helping your condition, your blood will need to be tested on a regular basis. Your stools may also need to be checked for blood. Do not miss any scheduled visits to your doctor.
Do not use the medication if it has changed colors or has any particles in it. Call your doctor for a new prescription.
You may be switched from injectable heparin to an oral (taken by mouth) blood thinner. Do not stop using the heparin until your doctor tells you to. You may need to use both the injection and the oral forms of heparin for a short time.
Store heparin at room temperature away from moisture and heat.
Contact your doctor for instructions if you miss a dose of heparin.
Heparin can cause you to have bleeding episodes while you are using it and for several weeks after you stop. Call your doctor at once if you have easy bruising or unusual bleeding, such as a nosebleed, blood in your urine or stools, black or tarry stools, or any bleeding that will not stop.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; itching or burning skin; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using heparin and call your doctor at once if you have any of these serious side effects:
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sudden numbness or weakness, especially on one side of the body;
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sudden headache, confusion, problems with vision, speech, or balance;
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pain or swelling in one or both legs;
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trouble breathing; or
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fever, chills, runny nose, or watery eyes.
Keep using heparin and talk to your doctor if you have any of these less serious side effects:
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mild pain, redness, warmth, or skin changes where the medicine was injected;
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mild itching of your feet; or
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bluish-colored skin.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Before using heparin, tell your doctor if you have high blood pressure, an infection involving your heart, hemophilia or other bleeding disorder, a stomach or intestinal disorder, liver disease, or if you are on your period.
Heparin can cause you to have bleeding episodes while you are using it and for several weeks after you stop. Call your doctor at once if you have easy bruising or unusual bleeding, such as a nosebleed, black or bloody tarry stools, or any bleeding that will not stop.
Certain medicines can increase your risk of bleeding while you are using heparin, such as aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs) including ibuprofen (Motrin, Advil), naproxen (Aleve, Naprosyn), diclofenac (Voltaren), diflunisal (Dolobid), etodolac (Lodine), flurbiprofen (Ansaid), indomethacin (Indocin), ketoprofen (Orudis), ketorolac (Toradol), mefenamic acid (Ponstel), meloxicam (Mobic), nabumetone (Relafen), piroxicam (Feldene), and others.
Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Women over 60 years of age may be more likely to have bleeding episodes while using heparin.
Certain medicines can increase your risk of bleeding while you are using heparin, such as aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs) including ibuprofen (Motrin, Advil), naproxen (Aleve, Naprosyn), diclofenac (Voltaren), diflunisal (Dolobid), etodolac (Lodine), flurbiprofen (Ansaid), indomethacin (Indocin), ketoprofen (Orudis), ketorolac (Toradol), mefenamic acid (Ponstel), meloxicam (Mobic), nabumetone (Relafen), piroxicam (Feldene), and others.
Before using heparin, tell your doctor if you are using any of the following drugs:
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another blood thinner, such as warfarin (Coumadin);
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salicylates such as aspirin, Disalcid, Doan’s Pills, Dolobid, Salflex, Tricosal, and others;
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dipyridamole (Persantine);
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nicotine cigarettes, gum, lozenges, or skin patches;
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cold, allergy, or sleep medications (Allerest, Benadryl, Chlor-Trimeton, Dimetapp, Sominex, and others);
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hydroxychloroquine (Plaquenil, Quineprox);
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digoxin (digitalis, Lanoxin, Lanoxicaps); or
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demeclocycline (Declomycin), doxycycline (Adoxa, Doryx, Oracea, Vibramycin), minocycline (Dynacin, Minocin, Solodyn, Vectrin), or tetracycline (Brodspec, Panmycin, Sumycin, Tetracap).
If you are using any of these drugs, you may not be able to use heparin, or you may need dosage adjustments or special tests during treatment.
There may be other drugs not listed that can affect heparin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Seek emergency medical attention if you think you have used too much of this medicine.
Symptoms of a heparin overdose may include easy bruising, nosebleeds, blood in your urine or stools, black or tarry stools, or any bleeding that will not stop.
