More drugs that can interact with Norvir (ritonavir)

    Abbott is alerting physicians and pharmacists to more drugs that can interact with Norvir (ritonavir).

    Norvir inhibits cytochrome P450 enzymes in the liver. This slows the metabolism of other drugs...increasing the risk of toxicity.

    A long list of drugs that shouldn't be given with Norvir is already in the product monograph.

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