• The kidneys and liver help to remove Ditropan from your body. Therefore, if you have kidney or liver disease, you may require extra monitoring by your healthcare provider and you may need to take a lower dosage.
   
• Make sure your healthcare provider knows if you have myasthenia gravis, hyperthyroidism, heart disease, congestive heart failure, an arrhythmia, a hernia, high blood pressure, ulcerative colitis, acid reflux, or an enlarged prostate, as Ditropan may make these problems worse.
   
• The medication can cause blurred vision, dizziness, and drowsiness. Make sure you know how Ditropan affects you before driving or operating heavy machinery.
   
• Ditropan may interact with a number of other medications (see Ditropan Drug Interactions).
   
• Ditropan is considered a pregnancy Category B medication. This means that it is probably safe for use during pregnancy, although the full risks are not known (see Ditropan and Pregnancy).
   
• It is not known if Ditropan passes through breast milk. Therefore, if you are breastfeeding or plan to start, discuss this with your healthcare provider prior to taking the drug (see Ditropan and Breastfeeding).
   

• Are allergic to Ditropan, oxybutynin chloride, or any inactive components used to make the medication. Your healthcare provider or pharmacist has a list of the inactive ingredients.
   
• Have uncontrolled narrow-angle glaucoma (an eye condition).
   
• Have difficulty passing urine (known medically as urinary retention). This is often caused by conditions such as an enlarged prostate.
   
• Have a condition that slows the emptying of food from your stomach (known medically as delayed gastric emptying) or that severely slows the movement of food through your digestive tract.