What worked for me was not forcing structures in the brain to function through chemicals but actually changing them through a breakthrough treatment called Neurofeedback. It is possible to physically and permanently alter the behavior of the brain and achieve far greater results than any drug could possibly do. Along with proper physical/mental training you can come out far ahead and still retain the "you" instead of some artificial version that may never go away.
The leading specialist in this field can be found on this website. You can find information about it here[1]. After significant research into the functioning of the brain. I realized that ADHD isn't a focusing problem. It's that the focus networks in your brain haven't been adequately trained and require the use of pharmaceuticals to temporarily induce this along with other negative side effects.