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  2. Levofloxacin - Wikipedia

    en.wikipedia.org/wiki/Levofloxacin

    Unlike ciprofloxacin, levofloxacin does not appear to deactivate the drug metabolizing enzyme CYP1A2. Therefore, drugs that use that enzyme, like theophylline, do not interact with levofloxacin. It is a weak inhibitor of CYP2C9, [37] suggesting potential to block the breakdown of warfarin and phenprocoumon. This can result in more action of ...

  3. CYP1A2 - Wikipedia

    en.wikipedia.org/wiki/CYP1A2

    The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. CYP1A2 localizes to the endoplasmic reticulum and its expression is induced by some polycyclic aromatic hydrocarbons (PAHs), some of which are found in cigarette smoke. The enzyme's ...

  4. List of SJS-inducing substances - Wikipedia

    en.wikipedia.org/wiki/List_of_SJS-inducing...

    This is a list of drugs and substances that are known or suspected to cause Stevens–Johnson syndrome This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources .

  5. Cytochrome P450 (individual enzymes) - Wikipedia

    en.wikipedia.org/wiki/Cytochrome_P450...

    Effects on P450 isozyme activity are a major source of adverse drug interactions, since changes in P450 enzyme activity may affect the metabolism and clearance of various drugs. For example, if one drug inhibits the P450-mediated metabolism of another drug, the second drug may accumulate within the body to toxic levels.

  6. Ciprofloxacin - Wikipedia

    en.wikipedia.org/wiki/Ciprofloxacin

    Ciprofloxacin inhibits the drug-metabolizing enzyme CYP1A2 and thereby can reduce the clearance of drugs metabolized by that enzyme. CYP1A2 substrates that exhibit increased serum levels in ciprofloxacin-treated patients include tizanidine, theophylline, caffeine, methylxanthines, clozapine, olanzapine, and ropinirole. Co-administration of ...

  7. Quinolone antibiotic - Wikipedia

    en.wikipedia.org/wiki/Quinolone_antibiotic

    Common side effects include gastrointestinal effects such as nausea, vomiting, and diarrhea, as well as headache and insomnia. Postmarketing surveillance has revealed a variety of relatively rare but serious adverse effects associated with all members of the fluoroquinolone antibacterial class.

  8. List of cytochrome P450 modulators - Wikipedia

    en.wikipedia.org/wiki/List_of_cytochrome_P450...

    "Indiana University Department of Medicine Clinical Pharmacology Drug Interactions Flockhart Table ™". "INHIBITORS, INDUCERS AND SUBSTRATES OF CYTOCHROME P450 ISOZYMES". "The Life Raft Group: Long List of Inhibitors and Inducers of CYP3A4 and CYP2D6". "DRUGBANK Online: Cytochrome P-450 Enzyme Inhibitors".

  9. Drug interaction - Wikipedia

    en.wikipedia.org/wiki/Drug_interaction

    When two drugs affect each other, it is a drugdrug interaction (DDI). The risk of a DDI increases with the number of drugs used. [1] A large share of elderly people regularly use five or more medications or supplements, with a significant risk of side-effects from drugdrug interactions. [2] Drug interactions can be of three kinds:

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