I'm an adult with moderate ADHD and use nicotine gum as my treatment. I've been on Concerta and Adderall and find the gum works just as well but with no side-effects at all. I also don't have to request a refill every 30 days and it's MUCH cheaper.
I've never smoked a cigarette or vaped in my life. The dose required to alleviate my symptoms is so low (6~8mg a day) that addiction is basically non-existent. I don't take it on weekend unless I'm working and am totally fine.
I get salty when people demonize nicotine, it's made my life tolerable.