Warfarin is the generic equivalent of the brand-name drug Warfarin Sodium. Licensed pharmacies, clinics, doctor's offices, and veterinary practices can source wholesale Warfarin through Premier Pharma with same-day fulfillment on in-stock SKUs.
FDA Drug Information
Indications & Usage
1 INDICATIONS AND USAGE Warfarin sodium tablets are indicated for: Prophylaxis and treatment of venous thrombosis and its extension, pulmonary embolism (PE). Prophylaxis and treatment of thromboembolic complications associated with atrial fibrillation (AF) and/or cardiac valve replacement. Reduction in the risk of death, recurrent myocardial infarction (MI), and thromboembolic events such as stroke or systemic embolization after myocardial infarction. Limitations of Use Warfarin sodium tablets have no direct effect on an established thrombus, nor does it reverse ischemic tissue damage. Once a thrombus has occurred, however, the goals of anticoagulant treatment are to prevent further extensio…
Adverse Reactions
6 ADVERSE REACTIONS The following serious adverse reactions to warfarin sodium are discussed in greater detail in other sections of the labeling: Hemorrhage [see Boxed Warning , Warnings and Precautions (5.1) , and Overdosage (10) ] Tissue Necrosis [see Warnings and Precautions (5.2) ] Calciphylaxis [see Warnings and Precautions (5.3) ] Acute Kidney Injury [see Warnings and Precautions (5.4) ] Systemic Atheroemboli and Cholesterol Microemboli [see Warnings and Precautions (5.5) ] Limb Ischemia,…
Drug Interactions
7 DRUG INTERACTIONS Concomitant use of drugs that increase bleeding risk, antibiotics, antifungals, botanical (herbal) products, and inhibitors and inducers of CYP2C9, 1A2, or 3A4. ( 7 ) Consult labeling of all concurrently used drugs for complete information about interactions with warfarin sodium or increased risks for bleeding. (7) 7.1 General Information Drugs may interact with warfarin sodium through pharmacodynamic or pharmacokinetic mechanisms. Pharmacodynamic mechanisms for drug interact…
Dosage & Administration
2 DOSAGE AND ADMINISTRATION Individualize dosing regimen for each patient, and adjust based on INR response. (2.1, 2.2) Knowledge of genotype can inform initial dose selection. (2.3) Monitoring: Obtain daily INR determinations upon initiation until stable in the therapeutic range. Obtain subsequent INR determinations every 1 to 4 weeks. (2.4) Review conversion instructions from other anticoagulants. ( 2.8 ) 2.1 Individualized Dosing The dosage and administration of warfarin sodium tablets must b…
Patient Counseling Information
17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Medication Guide). Instructions for Patients Advise patients to: Strictly adhere to the prescribed dosage schedule [see Dosage and Administration (2.1) ] . If the prescribed dose of warfarin sodium is missed, take the dose as soon as possible on the same day but do not take a double dose of warfarin sodium the next day to make up for missed doses [see Dosage and Administration (2.6) ] . Obtain prothrombin time tests and make regular visits to their physician or clinic to monitor therapy [see Dosage…
Source: FDA. For professional use only. Not a substitute for prescribing information.
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