Warfarin Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
Pronounced: (WARF-uh-rin)
Warfarin Oral Interactions
Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any drug, vitamin, or herbal product without checking with your doctor or pharmacist first.
Warfarin interacts with many prescription, nonprescription, vitamin, and herbal products. This includes medications that are applied to the skin or inside the vagina or rectum. The following interactions listed do not contain all possible drug interactions. The interactions with warfarin usually result in an increase or decrease in the "blood-thinning" (anticoagulant) effect. Patients taking warfarin should be closely monitored to prevent serious bleeding or clotting problems.
This drug should not be used with the following medication because a very serious interaction may occur:
- mifepristone
If you are currently taking the medication listed above, tell your doctor or pharmacist before starting warfarin.
Aspirin and aspirin-like drugs (salicylates) and nonsteroidal anti-inflammatory drugs (NSAIDs such as ibuprofen, naproxen, celecoxib) may have effects similar to warfarin. These drugs may increase the risk of bleeding problems if taken during treatment with warfarin. Carefully check all prescription/nonprescription product labels (including drugs applied to the skin such as pain-relieving creams) since they may contain NSAIDs or salicylates. Low-dose aspirin and related drugs (e.g., clopidogrel, ticlopidine) should be continued if prescribed by your doctor for specific medical reasons such as heart attack or stroke prevention. Ask your doctor or pharmacist about using these products safely.
Many herbal medications have "blood-thinning" or "blood-clotting" effects, and some may directly affect warfarin. Tell your doctor before taking any herbal medications, especially bromelains, coenzyme Q10, cranberry, danshen, dong quai, fenugreek, garlic, ginkgo biloba, ginseng, goldenseal, St. Johns wort, among others.
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