Warfarin 4 mg Tablets is included in the Pill Pass Discount Drug List at Pill Pals Pharmacy. This educational article summarizes key FDA-label topics for patients, caregivers, and prescribers who want a plain-language overview before speaking with a physician or pharmacist.
Drug Name
Warfarin 4 mg Tablets
FDA Labeled Indications
Warfarin is FDA-labeled for prophylaxis and treatment of venous thrombosis and pulmonary embolism, thromboembolic complications associated with atrial fibrillation or cardiac valve replacement, and reduction in risk of death, recurrent myocardial infarction, and thromboembolic events after myocardial infarction.
Contraindications
Contraindications include pregnancy in many circumstances, hemorrhagic tendencies or blood dyscrasias, recent or potential surgery involving central nervous system or eye, bleeding of the gastrointestinal, genitourinary, or respiratory tract, active ulceration or overt bleeding, severe uncontrolled hypertension, and hypersensitivity.
Warnings
Warnings include major or fatal bleeding, tissue necrosis, calciphylaxis, fetal harm, and many drug, food, and disease interactions that can change INR.
Precautions
Requires INR monitoring and individualized dosing. Use caution with antibiotics, antifungals, amiodarone, NSAIDs, antiplatelets, SSRIs/SNRIs, herbal products, alcohol changes, diet changes, liver disease, kidney disease, and fall risk.
Adverse Reactions
Adverse reactions may include bleeding, bruising, nosebleeds, blood in urine or stool, skin necrosis, nausea, abdominal pain, rash, and purple toe syndrome.
Pill Pass Discount Drug List Notes
Availability, quantity limits, manufacturer selection, and final dispensing decisions may depend on prescription requirements, clinical appropriateness, inventory, and applicable law. This article is informational and is not a substitute for individualized medical advice, diagnosis, treatment, or the full FDA-approved labeling for the dispensed product.
Related Pill Pass Discount Drug List Articles
For related medications on the same Pill Pass Discount Drug List, you may also review Warfarin 1 mg Tablets, Warfarin 2 mg Tablets, Warfarin 2.5 mg Tablets, and Warfarin 3 mg Tablets.
Source note: this article is written as a patient-friendly summary of FDA labeling topics available through DailyMed and related FDA labeling resources. Manufacturer-specific labeling can vary, so patients should rely on the medication guide, package insert, prescriber instructions, and pharmacist counseling for their specific product.
Warfarin 4 mg Tablets is on the Pill Pass List. This information is accurate as of May 13, 2026. If you would like more information on this medication, please contact your Physician or Pharmacist.
