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Drug Interactions between bcg vaccine and ethionamide

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

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Interactions between your drugs

Major

ethionamide BCG vaccine

Applies to: ethionamide and bcg vaccine

GENERALLY AVOID: Coadministration of antituberculosis drugs with the BCG vaccine may result in an inadequate immune response to the vaccine. The exact mechanism has not been described but it is likely that BCG vaccine, which contains a live, attenuated culture of Bacillus of Calmette and Guerin strain of Mycobacterium bovis, is sensitive to the antituberculosis effects of these drugs. Available data suggests that BCG vaccine is sensitive to commonly used antituberculosis agents such as isoniazid, ethambutol, and rifampin; it is reportedly not sensitive to pyrazinamide. However, clinical and/or sensitivity data are not available for BCG vaccine and all antituberculosis agents.

MANAGEMENT: Due to the potential loss of vaccine efficacy, the manufacturer recommends that concomitant use of antituberculosis drugs with the BCG vaccine should generally be avoided. However, in cases of accidental BCG overdosage, immediate treatment with antituberculosis drugs is recommended. In addition, if a systemic BCG infection is suspected after administration of the vaccine, antituberculosis therapy should be initiated and an infectious disease expert consulted for further guidance.

References (3)
  1. (2019) "Product Information. BCG Vaccine AJV (BCG vaccine)." AJ Vaccines
  2. (2023) "Product Information. BCG Vaccine (BCG vaccine)." Merck Sharp & Dohme LLC
  3. Durek C, Rusch-Gerdes S, Jocham D, Bohle A (2024) Sensitivity of BCG to modern antibiotics https://pubmed.ncbi.nlm.nih.gov/10575268/

Drug and food interactions

Major

ethionamide food

Applies to: ethionamide

GENERALLY AVOID: The concomitant use of protionamide with alcohol may enhance the central nervous system exciting effect of protionamide. The mechanism is not known. Excessive use of alcohol with another thiocarbamide derivative ethionamide, has been reported to precipitate a psychotic reaction. In addition, alcohol tolerance is reported to be reduced during protionamide treatment.

MANAGEMENT: Consumption of alcohol during protionamide treatment should be avoided. The manufacturer of ethionamide also advises that excess alcohol consumption should be avoided during ethionamide therapy (US).

References (2)
  1. (2001) "Product Information. Trecator-SC (ethionamide)." Wyeth-Ayerst Laboratories
  2. World Health Organization (2020) WHO Public Assessment Reports (WHOPARs) https://extranet.who.int/pqweb/medicines/prequalification-reports/whopars

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

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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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