Before taking solifenacin,
tell your doctor and pharmacist if you are allergic to solifenacin, any other medications, or corn.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking. Be sure to mention any of the following: amiodarone (Cordarone, Pacerone); antifungals such as fluconazole (Diflucan), itraconazole (Sporanox), and ketoconazole (Nizoral); carbamazepine (Tegretol); cimetidine (Tagamet); cisapride (Propulsid); clarithromycin (Biaxin); cyclosporine (Neoral, Sandimmune); danazol (Danocrine); delavirdine (Rescriptor); dexamethasone (Decadron); diltiazem (Cardizem, Dilacor, Tiazac); disopyramide (Norpace); dofetilide (Tikosyn); erythromycin (E.E.S., E-Mycin, Erythrocin); ethosuximide (Zarontin); fluoxetine (Prozac, Sarafem); fluvoxamine (Luvox); HIV protease inhibitors such as indinavir (Crixivan) and ritonavir (Norvir); isoniazid (INH, Nydrazid);metronidazole (Flagyl); moxifloxacin (Avelox); nefazodone; phenobarbital (Luminal, Solfoton); phenytoin (Dilantin);pimozide (Orap); procainamide (Procanbid, Pronestyl); quinidine (Quinaglute, Quinidex); rifabutin (Mycobutin); rifampin (Rifadin, Rimactane); sotalol (Betapace); sparfloxacin (Zagam); thioridazine (Mellaril); troglitazone (Rezulin); troleandomycin (TAO); verapamil (Calan, Covera, Isoptin, Verelan); and zafirlukast (Accolate). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
tell your doctor what herbal products you are taking, especially St. John's wort.
tell your doctor if you or any of your family members have or have ever had prolonged QT interval (a problem with the way electricity is conducted in the heart that may cause fainting) or unexplained fainting; and if you have or have ever had glaucoma (an eye disease that can cause vision loss); any type of blockage in the bladder or digestive system; difficulty emptying your bladder or a weak urine stream; myasthenia gravis (a disorder of the nervous system that causes muscle weakness); ulcerative colitis (a condition which causes swelling and sores in the lining of the colon [large intestine] and rectum); benign prostatic hypertrophy (BPH, enlargement of the prostate, a male reproductive organ); constipation; or liver or kidney disease.
tell your doctor if you are pregnant or plan to become pregnant. If you become pregnant while taking solifenacin, call your doctor. Do not take solifenacin while you are breastfeeding.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking solifenacin.
you should know that solifenacin may cause blurred vision. Do not drive a car or operate machinery until you know how this medication affects you.
you should know that solifenacin may make it harder for your body to cool down when it gets very hot. Avoid exposure to extreme heat, and call your doctor or get emergency medical treatment if you have fever or other signs of heat stroke such as dizziness, upset stomach, headache, confusion, and fast pulse after you are exposed to heat.