Health & medical

Traveling with medication: TSA rules and how to get through security smoothly

By the TSA Wait Times team · Updated July 2026 · Published June 2026

TSA allows medications in your carry-on bag — including liquids over 3.4 oz if they are medically necessary. You are not required to have medications in their original prescription bottle for domestic US travel. Here is what the rules actually say.

General TSA medication rules

Both prescription and over-the-counter medications are permitted in carry-on and checked bags with no quantity restrictions. TSA's primary mission is security, not drug enforcement — these rules are designed to be practical for travelers who need their medication on hand.

• Medications are allowed. Prescription and over-the-counter medications are permitted in both carry-on and checked bags. Carry them in your carry-on whenever possible — checked bags can be delayed, lost, or exposed to temperature extremes in the cargo hold.
• No prescription label required (domestic). For domestic US flights, TSA does not require medication to be in a labeled prescription bottle. However, having the original label speeds up any questions and is strongly recommended.
• Declare if asked. TSA may ask you to remove medications for separate screening — this is routine. You have the right to request a private screening if you need to handle medication privately.
• Controlled substances. Allowed if legitimately prescribed and in the prescribed amount for your trip. TSA is not primarily a drug-enforcement agency — they are looking for security threats. However, if you are traveling internationally, always carry your prescription to show at customs.

Liquid medications — the 3-1-1 exception

The standard 3-1-1 rule limits liquids to containers of 3.4 oz (100 ml) or less, all fitting inside a single quart-size bag. Medically necessary liquid medications are explicitly exempt from this rule and may travel in any quantity needed.

• What qualifies for the exemption. Liquid prescription medication, insulin, saline solution, liquid nutrition, medical-grade eye drops, contact lens solution (if medically necessary), cough syrup, and liquid OTC medication are all exempt.
• What to do at the checkpoint. Declare your liquid medications to TSA before placing items in the bin — tell the officer before loading the belt. The officer will set them aside for separate screening.
• Explosive trace screening. Liquid medications may be tested with explosive trace detection (a swab of the outside of the bottle). This is routine procedure and does not mean anything is wrong with your medication.
• What is NOT exempt. Regular beverages, standard eye drops, cosmetics, and toiletries do not qualify — only medications and medically necessary liquids are exempt from the 3-1-1 rule.

Insulin and diabetes supplies

Insulin and all diabetes-related supplies are fully permitted through security in any quantity needed for your trip. Notify the TSA officer when you approach the checkpoint so they can route your items correctly without delay.

Other medical devices and supplies

Most common medical devices are permitted in carry-on baggage with no fee and no liquid restrictions. Airlines generally do not count medical devices toward your bag allowance — confirm with your airline at booking.

• CPAP / BiPAP machines. Allowed in carry-on at no extra charge — most airlines do not count them toward your bag limit. You may be asked to remove it from its case and place it in a bin for X-ray separately. A disposable cover or clear bag keeps it clean on the belt.
• EpiPen / auto-injectors. Allowed in carry-on. Carry with the medication attached — a syringe without medication may trigger additional questions. EpiPens count as carry-on medications under the 3-1-1 exemption.
• Liquid nutrition (Ensure, tube feeding). Allowed in quantities exceeding 3.4 oz as a medically necessary liquid. Declare at the checkpoint before placing items on the belt.
• Supplemental oxygen. You cannot bring your own pressurized oxygen tank on a plane. FAA-approved portable oxygen concentrators (POCs) are allowed — check with your airline at booking, as they require advance notice and specific FAA-approved models only.
• Prosthetics and orthotics. You may keep prosthetics on your body through screening. Alert the TSA officer before the scanner. You may request a private screening for prosthetics that contain metal or that you cannot easily remove.

Tips for getting through security with medication

Preparation before your trip eliminates almost every checkpoint complication. These five practices cover the most common friction points travelers encounter.

1. 01Carry all medications in your carry-on. Checked bags can be delayed, lost, or exposed to extreme temperatures in the cargo hold. Never put medication you depend on in checked luggage.
2. 02Carry a medication list. A typed or printed list from your doctor with generic names, brand names, doses, and diagnoses is useful at customs internationally and in emergencies. It takes seconds to produce and can resolve hours of questions.
3. 03Check destination rules for international travel. Some medications legal in the US are controlled substances in other countries. Adderall (amphetamine) is a controlled substance in Japan and several other countries — travelers have had it confiscated at customs without advance documentation. Check the destination country's embassy website before you fly.
4. 04Pack extra medication. Bring at least 2–3 days of extra supply beyond your trip length to cover delays, diverted flights, or lost luggage. For controlled substances, work with your prescriber in advance — some pharmacies cannot fill early.
5. 05Request a direct aisle seat for temperature-sensitive medication. An aisle seat lets you monitor your overhead bin and retrieve medication quickly if needed — useful when traveling with insulin or other items that should not sit in a warm overhead compartment for hours.

International travel with prescription medication

International travel adds a customs layer that domestic rules do not require. Rules vary significantly by country — do not assume US rules apply at your destination.

• Customs declaration.Some countries require you to declare prescription medications on arrival. Always carry the original prescription or a doctor's letter for controlled substances — a typed note on letterhead works better than a printout.
• Quantity limits.Many countries limit how much of a controlled substance you can bring in — often 30 to 90 days' supply. Check the destination country's embassy website or INCB (International Narcotics Control Board) guidance before your trip.
• Translation. If traveling to a non-English speaking country, consider having your prescription translated. Many pharmacists can read English, but documentation in the local language helps in an emergency or at a customs secondary inspection.
• Import permits — apply months in advance. Countries including Japan, Indonesia, China, and the UAE require an official import permit for certain medications — especially opioids, benzodiazepines, and stimulants such as Adderall or Ritalin. Apply through the destination country's health ministry. Processing can take 4–8 weeks.

If any of your medications are liquids, the TSA 3-1-1 liquid rules guide explains exactly what the exemption covers and how to declare items at the checkpoint. If you also travel with mobility aids, a CPAP, or other accessibility equipment, the flying with a disability guide covers your rights under the Air Carrier Access Act and how to request TSA Cares support.

Common questions