Hi R.,
Everything that is happening to you is right out of the textbook of coming off that type drug. Your body is trying to adjust. It sounds like you are putting forth a good effort but you may simply be missing a couple of pieces of the puzzle.
What kind of vitamin are you taking? Some are dangerous and actually do more harm than good. There are several different types and the delivery system will tell you how good it is or not. If it is a sulfonate or gluconate delivery system it is simply trash. Those are the ones you pick up at Walmart, Centrum, One-a-day, GNC....Chelate is a better formulation and you have to go to a pharmaceutical grade health store for those but they do still create some free radicals which is still not good. You need to take an abundance of antioxidants for it to be effective.
I take one that is compounded with an organic compound so it absorbs like food. If you are interested in trying it get back to me. Nutrition absorbing can balance everything INCLUDING your weight. My husband lost 110 pounds on this vitamin. A good Omega 3 will also do wonders. It is healthy for the brain and cognition, which means focus! The right kind of nutrition will also give you energy.
Also consider chiropractic care. It will help the detox process for the adderall.
God bless,
M.