5. Previous treatment with any investigational medication (drug has not been approved at any dose or for any indication) unless prior approval is granted by the sponsor and the patient completes any required washout. Use of an investigational medication that was subsequently licensed and nonstandard use of a licensed medication (eg, using a dose other than the dose that is stated in the licensed product labeling or using a licensed therapy for an alternative indication) is not exclusionary. Prior treatment with herbal medications or nutritional supplements is also permitted.