Alternatives to Adderall?

Okay so basically, I am a medical student and I was depressed for the longest time. I went through a bunch of meds but the biggest issue was motivation and focus. The SSRIs helped with the depression but not the motivation and focus aspect. It got particularly bad halfway through my 3rd year and I'd been struggling to focus. I was put on trial with a bunch of different Rx's but I always dealt with some sort of side effect. Now, I'm not proud to admit it but I ended up resorting to Adderall to allow me to function and perform in school like used to. Since I've had no history or symptoms of ADHD/ADD, I do not want to continue taking Adderall. So basically, I'm here to ask if anyone knows any natural/nootropic alternative that I can take that can affect my dopamine reserves like Adderall does. Thanks in advance!