Potential Weak Interaction
Quality of Evidence:
Coadministration has not been studied. In vitro studies have shown that chloramphenicol can inhibit metabolism mediated by CYP3A4. Coadministration of chloramphenicol may potentially increase levels of ritonavir via this mechanism, increasing the risk of adverse events. The clinical significance of this interaction is unknown Ocular use: Although chloramphenicol is systemically absorbed when used topically in the eye, the concentrations used are unlikely to cause a clinically significant interaction.
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