Drug Interactions between mercaptopurine and Raptiva
This report displays the potential drug interactions for the following 2 drugs:
- mercaptopurine
- Raptiva (efalizumab)
Interactions between your drugs
mercaptopurine efalizumab
Applies to: mercaptopurine and Raptiva (efalizumab)
GENERALLY AVOID: The use of efalizumab with other immunosuppressive or myelosuppressive agents may increase the risk of infections. Efalizumab alone can cause serious infections requiring hospitalization, and the risk may theoretically increase when coadministered with other immunosuppressive therapy. Agents that may be significantly myelo- or immunosuppressive include antineoplastic agents, radiation, zidovudine, linezolid, some antirheumatic agents, high dosages of corticosteroids or adrenocorticotropic agents (greater than 10 mg/day to 1 mg/kg/day, whichever is less, of prednisone or equivalent for more than 2 weeks), and long-term topical or inhaled corticosteroids.
MANAGEMENT: The safety and efficacy of efalizumab in combination with other immunosuppressive agents or phototherapy have not been evaluated. Patients receiving other immunosuppressive agents should not be treated with efalizumab because of the possibility of excessive immunosuppression. The duration of the period following treatment with efalizumab before one should consider starting other immunosuppressive therapy has not been evaluated.
References
- (2003) "Product Information. Raptiva (efalizumab)." Genentech
Drug and food interactions
mercaptopurine food
Applies to: 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
- Schmidt LE, Dalhoff K (2002) "Food-drug interactions." Drugs, 62, p. 1481-502
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.
See also
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. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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