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Details with Side Effects
Read this Medication Guide before you start taking COUMADIN (warfarin sodium) and each time you get a refill. There may be new information. This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment. You and your healthcare provider should talk about COUMADIN when you start taking it and at regular checkups.
What is the most important information I should know about COUMADIN?
COUMADIN can cause bleeding which can be serious and sometimes lead to death. This is because COUMADIN is a blood thinner medicine that lowers the chance of blood clots forming in your body.
- You may have a higher risk of bleeding if you take COUMADIN
- are 65 years of age or older
- have a history of stomach or intestinal bleeding
- have high blood pressure (hypertension)
- have a history of stroke, or “mini-stroke” (transient ischemic attack or TIA)
- have serious heart disease
- have a low blood count or cancer
- have had trauma, such as an accident or surgery
- have kidney problems
- take other medicines that increase your risk of bleeding,
- a medicine that contains heparin
- other medicines to prevent or treat blood clots
- nonsteroidal anti-inflammatory drugs (NSAIDs)
- take warfarin sodium for a long time. Warfarin sodium is the active ingredient in COUMADIN.
Tell your healthcare provider if you take any of these medicines. Ask your healthcare provider if you are not sure if your medicine is one listed above.
Many other medicines can interact with COUMADIN and affect the dose you need or increase COUMADIN side effects. Do not change or stop any of your medicines or start any new medicines before you talk to your healthcare provider.
Do not take other medicines that contain warfarin sodium while taking COUMADIN.
- Get your regular blood test to check for your response to COUMADIN. This blood test is called an INR test. The INR test checks to see how fast your blood clots. Your healthcare provider will decide what INR numbers are best for you. Your dose of COUMADIN will be adjusted to keep your INR in a target range for you.
- Call your healthcare provider right away if you get any
of the following signs or symptoms of bleeding problems:
- pain, swelling, or discomfort
- headaches, dizziness, or weakness
- unusual bruising (bruises that develop without known cause or grow in size)
- bleeding gums
- bleeding from cuts takes a long time to stop
- menstrual bleeding or vaginal bleeding that is heavier than normal
- pink or brown urine
- red or black stools
- coughing up blood
- vomiting blood or material that looks like coffee grounds
- Some foods and beverages can interact with COUMADIN and
affect your treatment and dose.
- Eat a normal, balanced diet. Talk to your healthcare provider before you make any diet changes. Do not eat large amounts of leafy, green vegetables. Leafy, green vegetables contain vitamin K. Certain vegetable oils also contain large amounts of vitamin K. Too much vitamin K can lower the effect of COUMADIN.
- Always tell all of your healthcare providers that you take COUMADIN.
- Wear or carry information that you take COUMADIN.
See “What are the possible side effects of COUMADIN?” for more information about side effects.
What is COUMADIN?
COUMADIN is prescription medicine used to treat blood clots and to lower the chance of blood clots forming in your body. Blood clots can cause a stroke, heart attack, or other serious conditions if they form in the legs or lungs.
It is not known if COUMADIN is safe and effective in children.
Who should not take COUMADIN?
Do not take COUMADIN if:
- your chance of having bleeding problems is higher than the possible benefit of treatment. Your healthcare provider will decide if COUMADIN is right for you. Talk to your healthcare provider about all of your health conditions.
- you are pregnant unless you have a mechanical heart valve. COUMADIN may cause birth defects, miscarriage, or death of your unborn baby.
- you are allergic to warfarin or any of the other ingredients in COUMADIN. See the end of this leaflet for a complete list of ingredients in COUMADIN.
What should I tell my healthcare provider before taking COUMADIN?
Before you take COUMADIN, tell your healthcare provider if you:
- have bleeding problems
- fall often
- have liver or kidney problems
- have high blood pressure
- have a heart problem called congestive heart failure
- have diabetes
- plan to have any surgery or a dental procedure
- have any other medical conditions
- are pregnant or plan to become pregnant. See “Who should not take COUMADIN?”
- are breast-feeding. You and your healthcare provider should decide if you will take COUMADIN and breast-feed.
Tell all of your healthcare providers and dentists that you are taking COUMADIN. They should talk to the healthcare provider who prescribed COUMADIN for you before you have any surgery or dental procedure. Your COUMADIN may need to be stopped for a short time or you may need your dose adjusted.
Tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements. Some of your other medicines may affect the way COUMADIN works. Certain medicines may increase your risk of bleeding. See “What is the most important information I should know about COUMADIN?”
Know the medicines you take. Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine.
How should I take COUMADIN?
- Take COUMADIN exactly as prescribed. Your healthcare provider will adjust your dose from time to time depending on your response to COUMADIN.
- You must have regular blood tests and visits with your healthcare provider to monitor your condition.
- If you miss a dose of COUMADIN, call your healthcare provider. Take the dose as soon as possible on the same day. Do not take a double dose of COUMADIN the next day to make up for a missed dose.
- Call your healthcare provider right away if you:
- take too much COUMADIN
- are sick with diarrhea, an infection, or have a fever
- fall or injure yourself, especially if you hit your head. Your healthcare provider may need to check you
What should I avoid while taking COUMADIN?
- Do not do any activity or sport that may cause a serious injury.
What are the possible side effects of COUMADIN?
COUMADIN may cause serious side effects including:
- See “What is the most important information I should know
- Death of skin tissue (skin necrosis or gangrene). This can happen soon after starting COUMADIN. It happens because blood clots form and block blood flow to an area of your body. Call your healthcare provider right away if you have pain, color, or temperature change to any area of your body. You may need medical care right away to prevent death or loss (amputation) of your affected body part.
- “Purple toes syndrome.” Call your healthcare provider right away if you have pain in your toes and they look purple in color or dark in color.
Tell your healthcare provider if you have any side effect that bothers you or does not go away.
These are not all of the side effects of COUMADIN. For more information, ask your healthcare provider or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store COUMADIN?
- Store COUMADIN at 59°F to 86°F (15°C to 30°C).
- Keep COUMADIN in a tightly closed container, and keep COUMADIN out of the light.
Keep COUMADIN and all medicines out of the reach of children.
General information about COUMADIN.
Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use COUMADIN for a condition for which it was not prescribed. Do not give COUMADIN to other people, even if they have the same symptoms that you have. It may harm them.
This Medication Guide summarizes the most important information about COUMADIN. If you would like more information, talk with your healthcare provider. You can ask your healthcare provider or pharmacist for information about COUMADIN that is written for healthcare professionals.
If you would like more information, go to www.coumadin.com or call 1-800-321-1335.
What are the ingredients in COUMADIN?
Active ingredient: Warfarin Sodium
Inactive ingredients: Lactose, starch, and magnesium stearate. The following tablets contain:
|1 mg:||D&C Red No. 6 Barium Lake|
|2 mg:||FD&C Blue No. 2 Aluminum Lake and FD&C Red No. 40 Aluminum Lake|
|2-1/2 mg:||D&C Yellow No. 10 Aluminum Lake and FD&C Blue No. 1 Aluminum Lake|
|3 mg:||FD&C Yellow No. 6 Aluminum Lake, FD&C Blue No. 2 Aluminum Lake, and FD&C Red No. 40 Aluminum Lake|
|4 mg:||FD&C Blue No. 1 Aluminum Lake|
|5 mg:||FD&C Yellow No. 6 Aluminum Lake|
|6 mg:||FD&C Yellow No. 6 Aluminum Lake and FD&C Blue No. 1 Aluminum Lake|
|7-1/2 mg:||D&C Yellow No. 10 Aluminum Lake and FD&C Yellow No. 6 Aluminum Lake|
This Medication Guide has been approved by the U.S. Food and Drug Administration.
Last reviewed on RxList: 10/2/2012
This monograph has been modified to include the generic and brand name in many instances.
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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