I have adult ADD so I can tell you what I do to study, it might help you. I dont take the meds. I learn to deal with it.
you have to know how "you" work. Personally, I "change channels" about every three to five min. so what I do is have all the channels on nursing, if I am studying I have the internet on a website for what I am studying, flashcards, the current book I am using, the powerpoints, any stock powerpoints I can find on the web about the topic. so I have five sources of info on the table in front of me. but you have to pay attention to the brain, when you find that you are flippin the channels in the mind, put the book down and pick up the notecards, then switch them up for the internet.
thats for sit down study time, but I think most ADD'ers learn better on their feet, so I tear pages out of the book and keep them in my pocket, about five pages fits in a pocket OK. I take them out whenever I have a chance, waiting for the school bus, waiting at the bank, at soccer practice, ect..
in the other pocket I keep notecards. I memorize them one at a time in the same "whenever I get a chance" fassion, But what I do is to throw them away after I memorize them. if you spend time studying something you allready know its like an instant OFF switch for the brain.
keep the cards on your person at all times, and mark an x on the top of your hand to remind you that the cards are in your pocket.
of you dont have ADD this will make no sence to you, of you do have it, it will be like an awakening. another true add'er taught this method to me, so now I pass it to you.
P.S. the first time you tear the pages from a book it will make you cringe, when you have those pages down cold in three hours, it will make you smile.
I am no doctor, but you should ask yoursef if you think you need the meds.