Can I bring my prescription medication on a plane?

Yes. TSA explicitly allows medications in both carry-on and checked bags, and you do not need to keep pills in their original bottles for domestic screening, though clear labeling speeds things up. The smart move is the carry-on: checked bags get lost, delayed, and temperature-cooked on the tarmac. Liquids are the part people worry about. Medically necessary liquids, medications, and creams are exempt from the 3.4-ounce rule - you can bring more in your carry-on. Pull them out of your bag and declare them for separate screening instead of leaving them buried. The same goes for ice packs keeping medication cool and for supplies like syringes that accompany injectable medication. One caution on labeling: while TSA does not require original bottles domestically, some state laws do govern how controlled substances are carried, so keeping the pharmacy bottle is the low-drama choice. International trips add a second layer of law: your destination's. Some countries restrict or ban medications that are routine in the US - certain ADHD stimulants, some pain medications, and even some cold remedies. The CDC recommends traveling with medicines in their original containers, carrying a copy of the prescription or a clinician's letter, and checking the embassy's guidance for your destination before you fly. Injectables like insulin deserve the same letter, per the CDC Yellow Book. Pymander is a free AI doctor, 24/7 by text. It can help you check the rules for a specific medication and destination before you pack.