Hello, David and welcome back to Just Answer!
My name isXXXXX have been with the company since 2006, and it will be my pleasure to assist you.Poligrip Denture adhesive is considered a 'gel' and is subject to the 3-1-1 rules by the TSA. It is allowed in carry on luggage if the tube weighs 3.4 ounces or less (travel size) and is included in the one quart sized clear plastic ziploc bag with other liquids, gels and aerosols as per the TSA regulations listed here:http://www.tsa.gov/311/index.shtmIf you want to bring a larger tube of Poligrip, and/or multiple tubes, to last throughout your trip, these should be packed in your checked luggage. As far as international flights, you must check with your individual airline and the individual country or countries you will be visiting, in order to find out their specific rules and regulations.For further information, you can contact the TSA directly, via email or phone:http://www.tsa.gov/contact/index.shtm
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Since I am taking the same airline from San Diego - Chicago - Munich - Naples, then Frankfurt, Houston, San Diego, will I need to contact each country or just the one airline?