Norvasc Drug Interactions

Taking Norvasc with certain other medications can lead to drug reactions. For example, reactions may occur when Norvasc is combined with Decadron, Sustiva, or Dilantin. Some of these interactions could increase your risk of side effects or reduce the effectiveness of Norvasc. To help ensure your safety, make sure your healthcare provider is aware of any other medications you are taking before starting treatment with Norvasc.

• CYP 3A4 inducer medications, such as:
   
  • Aminoglutethimide (Cytadren^®)
  • Bosentan (Tracleer^®)
  • Carbamazepine (Carbatrol^®, Epitol^®, Equetro^®, Tegretol^®)
  • Dexamethasone (Decadron^®, Dexpak^®, Maxidex^®)
  • Efavirenz (Sustiva^®)
  • Efavirenz, emtricitabine, and tenofovir (Atripla^®)
  • Etravirine (Intelence™)
  • Fosphenytoin (Cerebyx^®)
  • Nafcillin
  • Nevirapine (Viramune^®)
  • Oxcarbazepine (Trileptal^®)
  • Pentobarbital (Nembutal^®)
  • Phenobarbital (Luminal^®)
  • Phenytoin (Dilantin^®, Phenytek^®)
  • Primidone (Mysoline^®)
  • Rifabutin (Mycobutin^®)
  • Rifampin (Rifadin^®)
  • Rifapentine (Priftin^®)
  • St. John's wort

• CYP 3A4 inhibitor medications, such as:
   
  • Amprenavir (Agenerase^®)
  • Atazanavir (Reyataz^®)
  • Clarithromycin (Biaxin^®)
  • Conivaptan (Vaprisol^®)
  • Darunavir (Prezista^®)
  • Delavirdine (Rescriptor^®)
  • Diltiazem (Cardizem^®, Cardizem CD^®, Cardizem LA^®, Cartia XT^®, Dilacor XR^®, Dilt-CD^®, Diltia XT^®, Dilt-XR^®, Taztia XT^®, Tiazac^®)
  • Erythromycin
  • Fosamprenavir (Lexiva^®)
  • Imatinib (Gleevec^®)
  • Indinavir (Crixivan^®)
  • Isoniazid
  • Itraconazole (Sporanox^®)
  • Ketoconazole (Nizoral^®)
  • Lopinavir and ritonavir (Kaletra^®)
  • Miconazole
  • Nefazodone (Serzone^®)
  • Nelfinavir (Viracept^®)
  • Nicardipine (Cardene^®)
  • Posaconazole (Noxafil^®)
  • Quinidine
  • Ritonavir (Norvir^®)
  • Saquinavir (Fortovase^®, Invirase^®)
  • Telithromycin (Ketek^®)
  • Voriconazole (VFEND^®)

• Simvastatin (Zocor^®) or combination medications that contain simvastatin (Juvisync^®, Simcor^®, Vytorin^®).