Can liquid medications be brought on a plane? A one-stop guide to carry-on luggage regulations

▲ Airport security check. (Photo / Getty Images / AP)

Text by Rita

Everyone knows there are limits on how much liquid you can carry in your hand luggage, but what about medications, lighters, or breast milk—can they be taken on board?Skyscannerhas published a special report on this topic. While the article mainly focuses on UK airport regulations, travelers from other countries can still use it as a reference.

First, travelers should note that the following liquids must be in containers of no more than 100 ml and all placed in a single transparent plastic bag of 20 cm x 20 cm. The total volume must not exceed 1 liter.
• All beverages
• Liquid or semi-liquid foods: soups, jellies, honey, maple syrup
• Cosmetics: creams, lotions, essential oils, perfumes, mascara, lipsticks
• Sprays: shaving foam, hair spray, deodorant
• Pastes: toothpaste
• Gels: shower gel
• Contact lens solution


▲ What can and cannot be brought in luggage when traveling abroad? There are certain rules. (Photo / File photo)

Other common questions are summarized as follows:

1. What are the rules for liquids bought at duty-free shops?
Items such as alcohol and perfume can be carried in your hand luggage even if they exceed 100 ml, as long as they are unopened and you have the receipt. However, be cautious—when transiting through different countries, these items may need to be rescanned to ensure compliance with local regulations.

2. Can liquid medications be brought on a plane?
For example, if you are carrying skin medication that exceeds 100 ml, it is allowed. But you must prepare a prescription or doctor’s certificate explaining why you need to carry it with you. This must be shown to security personnel during screening.

3. Can babies' milk or food be brought on a plane?
Bringing milk for infants is permitted and can exceed 100 ml, but it will still need to be screened at security.

4. Can food be brought on a plane?
Solid foods like biscuits, fruits, sandwiches, etc., are not as strictly regulated. However, rules vary by country, so it's important to check the regulations of both your destination and any transit countries before your flight.

5. Are lighters and e-cigarettes allowed on planes?
Yes. However, the quantity cannot exceed one, and they are included within the 100 ml limit. Likewise, they must be placed in a transparent bag and screened at security.

According to current Taiwan regulations, passengers are only allowed to carry one lighter on board and it cannot be checked in. Windproof lighters and lighter fuel are also prohibited. In Chinese airports, lighters are banned from both carry-on and checked luggage.