All passenger items must undergo security screening. It is recommended that medication be clearly labeled to facilitate the screening process. You may bring medically necessary liquids, medications and creams in excess of 3.4 ounces or 100 milliliters in your carry-on bag.

Yes, airport security (such as the TSA) has the authority to check medications, but the process is generally straightforward and respectful of privacy. In 2026, travelers are permitted to bring unlimited quantities of medication in pill or solid form, as long as they undergo screening. For liquid medications, the standard 3.4-ounce (100ml) limit does not apply, provided the liquids are medically necessary. You should inform the security officer at the start of the screening that you have medically necessary liquids. While it is not a legal requirement in most countries to keep meds in their original prescription bottles, doing so can significantly speed up the process if a manual inspection is required. For "controlled substances" or injectable medications (like insulin with needles), it is highly recommended to carry a copy of your prescription or a doctor's note to avoid any misunderstandings during international transit or secondary searches.