What is Warfarin?
Warfarin is an anticoagulant medicine. It is used to lower the chance of blood clots forming in your body. Blood clots can cause a stroke, heart attack, or other serious conditions such as blood clots in the legs or lungs.
Who should not take Warfarin?
Do not take Warfarin if:
What should I tell my healthcare provider before starting Warfarin?
- Your chance of having bleeding problems is higher than the possible benefit of treatment. Your healthcare provider will decide if Warfarin is right for you. Talk to your healthcare provider about all of your health conditions.
- You are pregnant or plan to become pregnant. Warfarin can cause death or birth defects to an unborn baby. Use effective birth control if you can get pregnant.
- You are allergic to warfarin or to anything else in Warfarin sodium tablets.
Tell your healthcare provider about all of your health conditions, including if you:
How should I take Warfarin?
- Have bleeding problems
- Fall often
- Have liver or kidney problems
- Have high blood pressure
- Have a heart problem called congestive heart failure
- Have diabetes
- Drink alcohol or have problems with alcohol abuse. Alcohol can affect your Warfarin dose and should be avoided.
- Are pregnant or planning to become pregnant. See Who should not take Warfarin?
- Are breastfeeding. Warfarin may increase bleeding in your baby. Talk to your doctor about the best way to feed your baby. If you choose to breastfeed while taking Warfarin, both you and your baby should be carefully monitored for bleeding problems.
- Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. See What is the most important information I should know about Warfarin?
What should I avoid while taking Warfarin?
- Take Warfarin exactly as prescribed. Your healthcare provider will adjust your dose from time to time depending on your response to Warfarin.
- You must have regular blood tests and visits with your healthcare provider to monitor your condition.
- Take Warfarin at the same time every day. You can take Warfarin either with food or on an empty stomach.
- If you miss a dose of Warfarin, call your healthcare provider. Take the dose as soon as possible on the same day. Do not take a double dose of Warfarin the next day to make up for a missed dose.
- Call your healthcare provider right away if you take too much Warfarin.
- Call your healthcare provider if you are sick with diarrhea, an infection, or have a fever.
- Tell your healthcare provider about any planned surgeries, medical or dental procedures. Your Warfarin may have to be stopped for a short time or you may need your dose adjusted.
- Call your healthcare provider right away if you fall or injure yourself, especially if you hit your head. Your healthcare provider may need to check you.
What are the possible side effects of Warfarin?
- Do not start, stop, or change any medicine without talking with your healthcare provider.
- Do not make changes in your diet, such as eating large amounts of green, leafy vegetables.
- Do not change your weight by dieting, without first checking with your healthcare provider.
- Avoid drinking alcohol.
- Do not do any activity or sport that may cause a serious injury.
- Many other medicines, including prescription and non-prescription medicines, vitamins and herbal supplements can interact with Warfarin and:
- Affect the dose you need, or
- Increase Warfarin side effects.
Other side effects with Warfarin include
- Warfarin is very important for your health, but it can cause serious and life threatening bleeding problems. See What is the most important information I should know about Warfarin?
- Serious side effects of Warfarin also include:
- Death of skin tissue (skin necrosis or gangrene). This can happen soon after starting Warfarin. 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.
allergic reactions, liver problems, low blood pressure, swelling, low red blood cells, paleness, fever, and rash. Call your healthcare provider if you have any side effect that bothers you.
These are not all of the side effects of Warfarin. 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 Warfarin sodium tablets?
General Information About Warfarin
- Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.] Protect from light.
- Keep Warfarin and all medicines out of reach of children.
Medicines are sometimes prescribed for purposes not mentioned in a Medication Guide. Do not use Warfarin for a condition for which it was not prescribed. Do not give Warfarin to other people, even if they have the same condition. It may harm them. If you would like more information, talk with your healthcare provider. You can ask your healthcare provider or pharmacist for information about Warfarin that was written for healthcare professionals.
If you would like more information, talk to your healthcare provider or call Camber Pharmaceuticals, Inc. toll free at 1-866-495-8330.
This Medication Guide has been approved by the U.S. Food and Drug Administration.
Camber Pharmaceutical, Inc.
Piscataway, NJ 08854
InvaGen Pharmaceuticals, Inc.
Hauppauge, NY 11788