Usually a patient on constitutional medicine does not develop any illness and enjoy good health. Apart from any other specific medicine to an illness constitutional medicine is the best preventive medicine. At times it has been seen that a specific medicine for example Euphrasia taken for conjunctivitis precipitates the illness rather than preventing the illness. For the same reason it is advisable to take constitutional treatment as a preventive treatment. Talk to your doctor about your worries specific to the ailment and he / she will certainly prescribe you the right preventive medicine.