I've found that adderall can help some with attention and concentration. I was prescribed it however I do not take it regularly. I've had PCS for 2 years and early on in caffeine I actually noticed it made my symptoms worse and I felt more foggy, while on adderall they were made a little better particularly in terms of concentration ability. The comedown however was terrible, greatly exacerbated by my already terrible PCS symptoms. Caffeine made me feel much worse overall however because I saw no benefit. Now though, my symptoms aren't really affected by caffeine and it's a much easier way to have a quick energy boost using it. I avoid adderall because I feel it burns my mind out too much and I feel worse after. I only try to take it whenever absolutely necessary. Caffeine I use more casually. I do not recommend taking adderall every day, while caffeine is ok as long as it doesn't make your symptoms worse.