01The rules in detail
Pills and solid medication are unrestricted. Liquid medication, gels and aerosols needed for the trip are exempt from the 100 ml limit but must be declared and may be inspected. Carry medication in the cabin — checked bags get delayed. For international trips, check the destination’s rules: some countries ban or tightly control common drugs (codeine, ADHD stimulants, some sleep aids) and require a doctor’s letter or import permit (Japan, UAE, Singapore, Thailand).
02Tips
- Carry a copy of the prescription and a doctor's letter for controlled drugs.
- Keep a week's extra supply in case of delays.
03Frequently asked
Can I bring medication in my carry-on?
Yes. Allowed in carry-on in any reasonable quantity, including liquid medication over 100 ml (declare it at security). Keep prescriptions in original labelled containers, especially for controlled substances and international travel.
Can I pack medication in checked luggage?
Yes. Allowed in carry-on in any reasonable quantity, including liquid medication over 100 ml (declare it at security). Keep prescriptions in original labelled containers, especially for controlled substances and international travel.
Are the rules the same outside the US?
Mostly similar for liquids and batteries, which follow international standards, but sharp objects, tools, lighters and self-defense items vary widely by country. Check the departure airport's rules and the destination's laws.
TSA and other agencies allow officers to refuse any item they judge unsafe, and rules change. This page summarises published guidance as of the verified date; confirm on tsa.gov or your airport's site before packing anything unusual.