Medication Withholding before the bronchial provocation test:

Some of your regular medications need to be withheld prior to the tests Any Antihistamines should be withheld for 3 days prior to the tests. Regular inhalers medications for Asthma or COPD should be stopped 24 hours prior to the test. Avoid substances containing caffeine (Such as coffee, tea, energy drinks, etc.) and Smoking or Strenuous Exercise on the day of the test