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Drug Interactions between Avelox I.V. and Purixan

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

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Interactions between your drugs

Minor

mercaptopurine moxifloxacin

Applies to: Purixan (mercaptopurine) and Avelox I.V. (moxifloxacin)

Limited data suggest that chemotherapy with antineoplastic agents may reduce the plasma concentrations of oral quinolone antibiotics. The proposed mechanism is decreased quinolone absorption secondary to alteration of intestinal mucosa by cancer chemotherapy. In six patients with newly diagnosed hematologic malignancy, treatment with various antineoplastic agents (cyclophosphamide, cytarabine, daunorubicin, doxorubicin, mitoxantrone, prednisolone, vincristine) decreased the mean peak serum concentration (Cmax) and area under the concentration-time curve (AUC 0 to 4 hours) of ciprofloxacin by approximately 46% each. Data are not available for other quinolone antibiotics.

References

  1. Johnson EJ, MacGowan AP, Potter MN, et al. "Reduced absorption of oral ciprofloxacin after chemotherapy for haematological malignancy." J Antimicrob Chemother 25 (1990): 837-42

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Drug and food interactions

Moderate

mercaptopurine food

Applies to: Purixan (mercaptopurine)

ADJUST DOSING INTERVAL: Limited data suggest that food may decrease the oral bioavailability of 6-mercaptopurine (6-MP). In one study, the pharmacokinetics of 6-MP were studied on two separate occasions in seven patients. A single dose of 6-MP was administered after an overnight fast on one occasion and 15 minutes after a standard breakfast on the other. The authors reported that peak plasma levels of 6-MP were lower and took longer to reach following administration in the fed state. In addition, plasma levels were undetectable (less than 20 ng/mL) in two patients.

MANAGEMENT: Until more information is available regarding the effect of food on 6-MP absorption, it may be advisable to take 6-MP on an empty stomach 1 hour before or 2 hours after a meal.

References

  1. Schmidt LE, Dalhoff K "Food-drug interactions." Drugs 62 (2002): 1481-502

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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

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