The following need to be considered before using Ditropan or Ditropan generic: Maintain a diet rich in fibre and drink plenty of water to avoid constipation., Avoid using marijuana., This medication causes dizziness and blurred vision. It is important to make sure that you are fully alert and able to see clearly before driving or using machinery., May increase the risk of heart stroke because of decreased sweating., Do not overheat yourself during warm weather, in saunas, or while working out., Not to be used by pregnant females., Nursing mothers should also avoid using the medicine., Limit use of alcohol., Not to be used by children younger than five years of age.