I used to take them when I was in high school and dealing with PTSD depression. It was the only way I could make it to class some days. The only thing to watch for is that they seem to be more addictive than coffee. After I got used to them I would crash hard if I didn't take them one day. You might be able to prevent this by doing something like 2 days on, 1 day off so your body doesn't become dependent on them.