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Drug Interactions between Miradon and pivmecillinam

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

anisindione pivmecillinam

Applies to: Miradon (anisindione) and pivmecillinam

Consumer information for this interaction is not currently available.

MONITOR: Penicillins may occasionally potentiate the risk of bleeding in patients treated with oral anticoagulants. The exact mechanism of interaction is unknown but may involve penicillin inhibition of platelet aggregation. In one study, defective platelet aggregation occurred with predictability in patients receiving penicillin G 24 million units/day, ampicillin 300 mg/kg/day, and methicillin 300 mg/kg/day. Other penicillins such as nafcillin, piperacillin, and ticarcillin have also been found to affect platelet function, and benzylpenicillin and carbenicillin have been reported to increase bleeding times and cause bleeding in the absence of an anticoagulant. There have been case reports describing increases in prothrombin time and INR as well as spontaneous bruising and bleeding in anticoagulated patients following initiation or completion of penicillin therapy. Although most cases have involved large, intravenous doses of some penicillins (e.g., carbenicillin, penicillin G, ticarcillin), the interaction has also been reported with regular, oral doses of amoxicillin and amoxicillin-clavulanate. In fact, a case-control study found amoxicillin-clavulanate to be one of only two medications to significantly increase the risk of overanticoagulation in previously stable outpatients treated with phenprocoumon or acenocoumarol. In that study, 300 outpatients at a Netherlands anticoagulant clinic who presented with an INR value greater than or equal to 6.0 (median value 6.8) were compared with 302 randomly selected matched controls with INR values within the target range (median value 3.2), and changes in the use of 87 potentially interacting drugs or drug classes in the four weeks prior to the index day were identified and analyzed. A course of amoxicillin-clavulanate increased the risk of overanticoagulation even after adjustment for potential confounding factors, particularly in patients treated with acenocoumarol. A follow-up study focusing on antibiotic use in outpatients treated with phenprocoumon or acenocoumarol at a different Netherlands anticoagulant clinic also identified amoxicillin use as a risk factor for overanticoagulation, with the relative risk most strongly increased four days or more after start of the antibiotic.

MANAGEMENT: Caution is recommended if a penicillin is prescribed during oral anticoagulant therapy, especially in the elderly and patients with uremia or hepatic impairment. The INR should be checked frequently and anticoagulant dosage adjusted accordingly, particularly following initiation or discontinuation of penicillin therapy in patients who are stabilized on their anticoagulant regimen. Patients should be advised to promptly report any signs of bleeding to their doctor, including pain, swelling, headache, dizziness, weakness, prolonged bleeding from cuts, increased menstrual flow, vaginal bleeding, nosebleeds, bleeding of gums from brushing, unusual bleeding or bruising, red or brown urine, or red or black stools.

Drug and food interactions

Moderate

anisindione food

Applies to: Miradon (anisindione)

Nutrition and diet can affect your treatment with anisindione. 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 anisindione. 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 anisindione. 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 anisindione. Talk to a healthcare provider if you are uncertain about what foods or medications you take that may interact with anisindione. 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 anisindione is given with enteral (tube) feedings, you may interrupt the feeding for one hour before and one hour after the anisindione dose to minimize potential for interaction. Feeding formulas containing soy protein should be avoided.

Moderate

anisindione food

Applies to: Miradon (anisindione)

Using anisindione together with ethanol (alcohol) can cause you to bleed more easily. If you take anisindione you should avoid large amounts of alcohol, but moderate consumption (one to two drinks per day) are not likely to affect the response to anisindione if you have normal liver function. You may need a dose adjustment in addition to testing of your prothrombin time or International Normalized Ratio (INR). Call your doctor promptly if you have any unusual bleeding or bruising, vomiting, blood in your urine or stools, headache, dizziness, or weakness. 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.

Moderate

anisindione food

Applies to: Miradon (anisindione)

Rarely, vitamin supplements containing vitamin K may reduce the effectiveness of anisindione. This may be more likely to occur in individuals who have low levels of vitamin K in their blood. Before using any vitamin supplement, you should check the label to make sure it does not contain vitamin K. If it does, let your doctor know before you start using it. You may need more frequent monitoring of your INR after starting the supplement or whenever it is discontinued, and appropriate adjustments made in your dosage if necessary. It is important to tell your doctor about all other medications you use, including other nutritional supplements 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.


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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor 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.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.