I travelled to the UK with a 1-month supply of Tymlos last year. I even brought a cold pack for the new pen I had to carry with me. There were no issues with TSA or upon landing in the UK. As a precaution-- and this never came up for me-- carry the prescription for the needles with you. Re: France-- I didn't fly into France, but I took the Eurostar there with the meds. As you may know, it is airport-style security, and I had no problem getting through. Have a fabulous trip.