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Drug Interactions between lyme disease vaccine and Purinethol

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

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Interactions between your drugs

Moderate

mercaptopurine Lyme disease vaccine

Applies to: Purinethol (mercaptopurine) and lyme disease vaccine

GENERALLY AVOID: The administration of Lyme disease vaccine to immunosuppressed patients may be associated with a diminished or suboptimal immunologic response due to antibody inhibition. Such patients may include those who have recently received or are receiving immunosuppressive agents, antilymphocyte globulins, alkylating agents, antimetabolites, radiation, 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), or long-term topical or inhaled corticosteroids.

MANAGEMENT: The manufacturer suggests considering deferral of vaccination against Lyme disease until 3 months after discontinuation of immunosuppressive therapy. Vaccines may generally be administered to patients receiving corticosteroids as replacement therapy (e.g., for Addison's disease).

References

  1. "Product Information. LYMErix (Lyme disease vaccine)." SmithKline Beecham PROD

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Drug and food interactions

Moderate

mercaptopurine food

Applies to: Purinethol (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

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

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