Before taking fluconazole,
tell your doctor and pharmacist if you are allergic to fluconazole, other antifungal medications such as itraconazole (Sporanox), ketoconazole (Nizoral), posaconazole (Noxafil), or voriconazole (Vfend), any other medications, or any of the ingredients in fluconazole tablets or suspension. Ask your pharmacist for a list of the ingredients.
tell your doctor if you are taking astemizole (Hismanal) (not available in the US), cisapride (Propulsid) (not available in the US), erythromycin (E.E.S., E-Mycin, Erythrocin); pimozide (Orap), quinidine (Quinidex), or terfenadine (Seldane) (not available in the US). Your doctor will probably tell you not to take fluconazole if you are taking any of these medications.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking, or plan to take. Also you should tell your doctor you have taken fluconazole before starting to take any new medications within 7 days of receiving fluconazole. Be sure to mention any of the following: amitriptyline; amphotericin B (Abelcet, AmBisome, Amphotec, Fungizone); anticoagulants ('blood thinners') such as warfarin (Coumadin, Jantoven); benzodiazepines such as midazolam (Versed); calcium channel blockers such as amlodipine (Norvasc, in Caduet, in Lotrel), felodipine (Plendil, in Lexxel), isradipine (DynaCirc), and nifedipine (Adalat, Procardia); carbamazepine (Carbatrol, Epitol, Tegretol); celecoxib (Celebrex); cholesterol-lowering medications (statins) such as atorvastatin (Lipitor, in Caduet), fluvastatin (Lescol), and simvastatin (Zocor, in Simcor, in Vytorin); clopidogrel (Plavix); cyclophosphamide (Cytoxan); cyclosporine (Gengraf, Neoral, Sandimmune); diuretics ('water pills') such as hydrochlorothiazide (HydroDIURIL, Microzide); fentanyl (Actiq, Duragesic, Fentora, Sublimaze); isoniazid (INH, Nydrazid); losartan (Cozaar, in Hyzaar); methadone (Methadose); nevirapine (Viramune); nonsteroidal anti-inflammatory drugs (NSAIDS) such as ibuprofen (Advil, Motrin, others) and naproxen (Aleve, Anaprox, Naprelan); oral contraceptives (birth control pills); oral medication for diabetes such as glipizide (Glucotrol), glyburide (Diabeta, Micronase, Glycron, others), and tolbutamide (Orinase); nortriptyline (Pamelor); phenytoin (Dilantin, Phenytek); prednisone (Sterapred); rifabutin (Mycobutin); rifampin (Rifadin, Rimactane, in Rifamate, in Rifater); saquinavir (Invirase); sirolimus (Rapamune); tacrolimus (Prograf); theophylline (Elixophyllin, Theo-24, Uniphyl, others); tofacitinib (Xeljanz); triazolam (Halcion); valproic acid (Depakene, Depakote); vinblastine; vincristine; vitamin A; voriconazole (Vfend); and zidovudine (Retrovir). Your doctor may need to change the doses of your medications or monitor you carefully for side effects. Many other medications may also interact with fluconazole, so be sure to tell your doctor about all the medications you are taking, even those that do not appear on this list.
tell your doctor if you have or have ever had cancer; acquired immunodeficiency syndrome (AIDS); an irregular heartbeat; a low level of calcium, sodium, magnesium, or potassium in your blood; rare, inherited conditions where the body is not able to tolerate lactose or sucrose;or heart, kidney, or liver disease.
tell your doctor if you are pregnant, especially if you are in the first 3 months of your pregnancy, plan to become pregnant, or are breast-feeding. If you become pregnant while taking fluconazole, call your doctor. Fluconazole may harm the fetus.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking fluconazole.
you should know that fluconazole may make you dizzy or cause seizures. Do not drive a car or operate machinery until you know how this medication affects you.