Maraviroc + Quinidine = Unknown or no reaction

Effect on Concentration

Maraviroc
No change
Applies within class?
No
Quinidine
No change
Applies within class?
No

Pharmacologic Effects

Maraviroc
Effect
N/A
Applies within class?
No
Quinidine
Effect
N/A
Applies within class?
No

Interaction History

N/A

Last Updated 26-Jun-2018

Summary

Sources

Maraviroc vs Quinidine Theoretical Interactions ^

Study Design

There is no formal interaction study between these two agents.

Study Results

There has been no formal interaction study between these two agents. Limited interaction is expected given the differences in metabolic pathway seen with these two agents.

Study Conclusions

Possible interactions are theoretical and based upon knowledge of metabolic pathways and effects on drug transport proteins. Maraviroc is a substrate of CYP3A4, and quinidine is also a substrate of this enzyme, but does not induce or inhibit it. No dose adjustments are currently recommended and if warranted should be based on clinical monitoring of both safety and efficacy of the combined effect of these agents.

References

Hansten P, Horn J. Cytochrome p450 enzymes and drug interactions, table of cytochrome p450 substrates, inhibitors, inducers and p-glycoprotein, with footnotes., in the top 100 drug interactions - a guide to patient mana. 2007