Warfarin Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
- painful/red/purplish patches on the skin (such as on the toe, breast, abdomen)
- change in the amount of urine
- vision changes
- confusion
- slurred speech
- weakness on one side of the body
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:
- rash
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Warfarin Oral Precautions
Before taking warfarin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have:
- bleeding disorders (such as hemophilia)
Before using this medication, tell your doctor or pharmacist your medical history, especially of:
- liver disease
- alcohol use/abuse
- mental/mood disorders (including memory problems)
- recent major injury/surgery
- bleeding problems (such as bleeding of the stomach/intestines, bleeding in the brain)
- blood vessel disorders (such as aneurysms)
- blood disorders (such as anemia, polycythemia)
- heart failure
- thyroid problems
- family member who did not respond to warfarin treatment
- frequent falls/injuries
- vitamin deficiency or absorption problems
It is important that all your doctors and dentists know that you take warfarin. Before having surgery or any medical/dental procedures, tell your doctor or dentist that you are using this medication.
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