Question for flight attendants who take adderall and travel internationally?

I just got diagnosed with ADHD and have been wanting to take adderall but I’m curious about traveling with it internationally and if you’re allowed to take it with you or you just leave it at home? Sorry if this is just a dumb question but I’ve read some countries can be strict.

Also if I’m not being too nosey do you get it from a pcp or a psych doctor? My pcp is reluctant to prescribe it to me because they mentioned me constantly traveling and the frequent testing so I was wondering if it would be better to try a psychiatrist and maybe do virtual appointments?