"No medication shall be administered without proper written consent/permission by the parent/guardian and/or physician. All medications must be brought to the nurse in their original container, labeled with the student's name and accompanied by the proper form." (Excerpt from the elementary/middle school handbooks.)
This includes cough drops. Post-viral coughs can last for weeks, and if your child needs cough drops to be able to concentrate in class, I will be happy to administer them. But they must be kept in the nurse's office and administered by the nurse.