Drug Interactions between pirfenidone and warfarin
This report displays the potential drug interactions for the following 2 drugs:
Interactions between your drugs
No interactions were found between pirfenidone and warfarin. This does not necessarily mean no interactions exist. Always consult your healthcare provider.
- Pirfenidone is in the drug class miscellaneous uncategorized agents.
- Pirfenidone is used to treat Idiopathic Pulmonary Fibrosis.
- Warfarin is in the drug class coumarins and indandiones.
Warfarin is used to treat the following conditions:
- Antiphospholipid Syndrome
- Chronic Central Venous Catheterization
- Deep Vein Thrombosis Prophylaxis after Hip Replacement Surgery
- Deep Vein Thrombosis Prophylaxis after Knee Replacement Surgery
- Deep Vein Thrombosis, First Event
- Deep Vein Thrombosis, Recurrent Event
- Heart Attack
- Heart Failure
- Prevention of Thromboembolism in Atrial Fibrillation
- Prosthetic Heart Valves - Thrombosis Prophylaxis
- Prosthetic Heart Valves, Mechanical Valves - Thrombosis Prophylaxis
- Prosthetic Heart Valves, Tissue Valves - Thrombosis Prophylaxis
- Protein S Deficiency
- Pulmonary Embolism, First Event
- Pulmonary Embolism, Recurrent Event
- Thromboembolic Stroke Prophylaxis
Drug and food interactions
Applies to: warfarin
Nutrition and diet can affect your treatment with warfarin. Therefore, it is important to keep your vitamin supplement and food intake steady throughout treatment. For example, increasing vitamin K levels in the body can promote clotting and reduce the effectiveness of warfarin. While there is no need to avoid products that contain vitamin K, you should maintain a consistent level of consumption of these products. Foods rich in vitamin K include beef liver, broccoli, Brussels sprouts, cabbage, collard greens, endive, kale, lettuce, mustard greens, parsley, soy beans, spinach, Swiss chard, turnip greens, watercress, and other green leafy vegetables. Moderate to high levels of vitamin K are also found in other foods such as asparagus, avocados, dill pickles, green peas, green tea, canola oil, margarine, mayonnaise, olive oil, and soybean oil. However, even foods that do not contain much vitamin K may occasionally affect the action of warfarin. There have been reports of patients who experienced bleeding complications and increased INR or bleeding times after consuming large quantities of cranberry juice, mangos, grapefruit, grapefruit juice, grapefruit seed extract, or pomegranate juice. Again, you do not need to avoid these foods completely, but it may be preferable to limit their consumption, or at least maintain the same level of use while you are receiving warfarin. Talk to a healthcare provider if you are uncertain about what foods or medications you take that may interact with warfarin. It is important to tell your doctor about all medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
When warfarin is given with enteral (tube) feedings, you may interrupt the feeding for one hour before and one hour after the warfarin dose to minimize potential for interaction. Feeding formulas containing soy protein should be avoided.
Applies to: pirfenidone
Pirfenidone should be taken with food to help reduce dizziness and gastrointestinal side effects such as diarrhea, nausea, vomiting, and upset stomach. Avoid smoking during treatment, as cigarette smoking can reduce the blood levels and effects of pirfenidone. If you are a smoker, you should try to quit smoking before starting treatment. Talk to your doctor or pharmacist if you have any questions or concerns, or need help in finding a smoking cessation program. You should also avoid consuming grapefruit or grapefruit juice while taking pirfenidone, as it may increase blood levels of the medication and lead to more side effects. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Therapeutic duplication warnings
No warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
Drug Interaction Classification
|Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.|
|Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.|
|Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.|
|No interaction information available.|
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.