Nicotine and caffeine seem to have a similar effect on ADHD as amphetamines, but on a much smaller scale.
There's also something to be said for the act of smoking. It's a consistent ritual with a direct and immediate reward for very little effort. Perfect for the adhd brain
I mentioned nicotine because in my experience nicotine is much better at releasing dopamine than caffeine does, thus improves focus more than the other. Coffee raises other neurotrasmitters with a little effect on dopamine.
That said, coffee and nicotine are two stimulants that go and feel great together.
Before I was diagnosed with ADHD, I used to chain vape whenever I was coding or before bed to calm down. It had a similar effect amphetamine has on me: holds my focus and calms my mind down, but with noticeable side effects such as high blood pressure, pulse rate and a house that smells of smoke or papaya blast.
Nicotine and caffeine seem to have a similar effect on ADHD as amphetamines, but on a much smaller scale.
There's also something to be said for the act of smoking. It's a consistent ritual with a direct and immediate reward for very little effort. Perfect for the adhd brain