11. Use of any other prescribed medicine and over the counter drugs within 2 week or 5 times the half life, whichever is longer prior to the administration of the investigational product up to and including the follow up visit (Visit 4), with the exception of occasional use of paracetamol or ibuprofen and over the counter adrenergic nasal spray. No medications known to prolong the QT/corrected QT interval are allowed.