Before taking verapamil,
tell your doctor and pharmacist if you are allergic to verapamil or any other drugs.
tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially aspirin, carbamazepine (Tegretol); cyclosporine (Neoral, Sandimmune); fentanyl (Duragesic); heart and blood pressure medications such as beta-blockers, digoxin (Lanoxin), disopyramide (Norpace), flecainide (Tambocor), quinidine (Quinaglute, Quinidex), diuretics ('water pills'), or any other blood pressure lowering medication; lithium (Eskalith, Lithobid); medications to treat depression; medications to treat glaucoma (increased pressure in the eye); phenobarbital; rifampin (Rifadin, Rimactane); theophylline (Theo-Dur); and vitamins.
tell your doctor if you have or have ever had heart, liver, or kidney disease, muscular dystrophy, or gastrointestinal obstruction (strictures).
tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking verapamil, call your doctor.
if you are having surgery, including dental surgery, tell your doctor or dentist that you are taking verapamil.
you should know that verapamil may increase the effects of alcohol and make them last longer.
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