How risky do you think this if travelling to the US or the average European country? I wouldn't do this for countries in the Middle East. And I wouldn't take Adderall to Japan (even WITH a prescription you could be in serious trouble).
I've often carried controlled prescription drugs (e.g. dexamfetamine or xanax) on international flights and many times didn't have a copy of my prescription with me (stupid I know) but I HAD legitimately been prescribed those medicines so didn't even think about it.
I'm a bit more nervous doing this with tablets that I obtained through the DNM (I'm talking about genuine pharma meds in blister packs here and in very small quantities). My gut feeling is that it's massively unlikely it would ever cause a problem. Never once have I been asked to show a copy of my prescription.
But I still wanted to get some views on this (meds would be Hydrocodone or similar).
I smuggled a quarter of some cannabis from baltimore to nc in my underwear when I was 15 which was almost 20 years ago. We need a resident TSA agent on here because this question is asked a lot here. If you have the meds a in pill bottle that has your name on it its not like they go through your prescriptions and check to see and test said medications. I also smuggled once over 150 ambien and about 100 tramadol from Kuwait to the east coast united states that I had snatched from the clinics pharmacy where I was deployed to. That time I just left them in my pocket. I went through kuwaits international airport and a east coast airport. 0 problems. That 17 hour flight turned into a 17 hour fog lol plus I took two 10 mg ambien two shots of jack after getting out of the middle east after being dry for 9 months hunting down terrorizers. The way I see it. Keep the drugs near your nuts if you are really worried qbout it because dogs wont smell them and they will not set off any metal detectors.