warfarin (injection)Skip to the navigation
Your use of the content provided in this service indicates that you have read, understood and agree to the End-User License Agreement, which can be accessed by
clicking on this link
.
|
|
warfarin (injection)Skip to the navigationPronunciation: WAR far in Brand: Coumadin What is the most important information I should know about warfarin?You should not use warfarin if you have a bleeding disorder, a blood cell disorder, blood in your urine or stools, stomach bleeding, very high blood pressure, an infection of the lining of your heart, bleeding in your brain, recent or upcoming surgery, or if you need a spinal tap or epidural. Do not use warfarin if you cannot use it on time every day. Do not use warfarin if you are pregnant, unless your doctor tells you to. Warfarin increases your risk of bleeding, which can be severe or life-threatening. You will need frequent tests to measure your blood-clotting time. Call your doctor or seek emergency medical attention if you have bleeding that will not stop, if you have blood in your urine, black or bloody stools, or if you cough up blood or vomit that looks like coffee grounds. Many drugs can cause serious medical problems when used with warfarin. Tell your doctor about all medicines you have recently used. What is warfarin?Warfarin is an anticoagulant (blood thinner). Warfarin reduces the formation of blood clots. Warfarin is used to treat or prevent blood clots in veins or arteries, which can reduce the risk of stroke, heart attack, or other serious conditions. Warfarin may also be used for purposes not listed in this medication guide. What should I discuss with my healthcare provider before using warfarin?You should not use warfarin if you are allergic to it, or if you have:
You should not use warfarin if you cannot be reliable in using it because of alcoholism, psychiatric problems, dementia, or similar conditions. Warfarin can make you bleed more easily, especially if you have:
Do not use warfarin if you are pregnant, unless your doctor tells you to. Warfarin can cause birth defects, but preventing blood clots may outweigh any risks to the baby. You may be able to use warfarin during pregnancy if you have a mechanical heart valve. Use effective birth control to prevent pregnancy while using warfarin and for at least 1 month after your last dose. Tell your doctor right away if you become pregnant. To make sure warfarin is safe for you, tell your doctor if you have:
It is not known whether warfarin passes into breast milk. Tell your doctor if you are breast-feeding a baby. Watch for signs of bruising or bleeding in the baby if you use warfarin while you are nursing. How should I use warfarin?Use this medicine at the same time every day. Follow all directions on your prescription label. Your doctor may occasionally change your dose to make sure you get the best results. Never use a double dose, and do not use warfarin for longer than recommended. Warfarin injection is given through an IV into a vein. You may be shown how to use an IV at home. Do not give yourself this medicine if you do not understand how to use the injection, and how to properly mix and store the medicine. While using warfarin, you will need frequent "INR" or prothrombin time tests (to measure how long it takes your blood to clot). Your blood work will help your doctor determine the best dose for you. You must remain under the care of a doctor while using warfarin. If you have received warfarin in a hospital, call or visit your doctor 3 to 7 days after you leave the hospital. Your INR will need to be tested at that time. Do not miss any follow-up appointments. Tell your doctor if you are sick with diarrhea, fever, chills, or flu symptoms, or if your body weight changes. You may need to stop using warfarin 5 to 7 days before having any surgery or dental work. Call your doctor for instructions. You may also need to stop using warfarin if you need to take antibiotics, or if you have a spinal tap or spinal anesthesia (epidural). Wear a medical alert tag or carry an ID card stating that you use warfarin. Any medical care provider who treats you should know that you are using this medicine. Store this medicine in the original container at room temperature, away from moisture, heat, and light. After mixing your injection, use it within 4 hours. Do not refrigerate. What happens if I miss a dose?Use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose. What happens if I overdose?Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose can cause excessive bleeding. What should I avoid while using warfarin?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 using warfarin. Avoid drinking alcohol. Grapefruit juice, cranberry juice, noni juice, and pomegranate juice may interact with warfarin and lead to unwanted side effects. Avoid the use of these juice products while using warfarin. 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 warfarin less effective. If these foods are part of your diet, eat a consistent amount on a weekly basis. Ask your doctor before taking any medicine for pain, arthritis, fever, or swelling. This includes acetaminophen (Tylenol), aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib (Celebrex), diclofenac, indomethacin, meloxicam, and others. These medicines may affect blood clotting and may also increase your risk of stomach bleeding. What are the possible side effects of warfarin?Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Warfarin may cause you to bleed more easily, which can be severe or life-threatening. Seek emergency medical attention if you have any unusual bleeding, or bleeding that will not stop. You may also have bleeding on the inside of your body, such as in your stomach or intestines. Call your doctor at once if you have blood in your urine, black or bloody stools, or if you cough up blood or vomit that looks like coffee grounds. Also call your doctor at once if you have:
Common side effects may include:
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 warfarin?Many drugs (including some over-the-counter medicines and herbal products) can affect your INR and may increase the risk of bleeding if you take them with warfarin. Not all possible drug interactions are listed in this medication guide. It is very important to ask your doctor and pharmacist before you start or stop using any other medicine, especially:
This list is not complete and many other drugs can interact with warfarin. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Give a list of all your medicines to any healthcare provider who treats you.
Your use of the content provided in this service indicates that you have read, understood and agree to the End-User License Agreement, which can be accessed by
clicking on this link
.
|
Search the
Healthwise Knowledgebase This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. |