You should not receive this medicine if you have had an allergic reaction to neostigmine. You should not receive this medicine if you have a blockage in your intestines or urinary tract, or if you have an abdominal (belly) problem called peritonitis.
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Make sure your doctor knows if you are also taking hydrocortisone or prednisone tablets or liquid. Tell your doctor if you are also taking an antibiotic to treat or prevent an infection, such as neomycin, streptomycin, or kanamycin. Make sure your doctor knows if you are taking medicine to treat a heart rhythm problem, such as quinidine, procainamide (Procanbid®), Flecainide (Tambocor®), or sotalol (Betapace®).