Requirements vary somewhat from country to country regarding carry-on medication and liquids during air travel. Always check with your airlines before you pack to find out the requirements for all countries you will be traveling through, (their websites will have this information). Typically, small containers of baby food, formula, breast milk or liquid medication may be carried on if traveling with a small child. Other liquids, such as toiletry items, must not exceed 3.4 ounces each and be placed in ONE (per person) clear zip-locked bag (maximum quart-size for US travel or liter-size for most foreign travel). Medications should be kept in their original containers. You can always bring an empty day-by-day pill sorter to fill once you arrive at your destination.