
The drugs Adderal, Ritalin, Amphetamine Sulphate,
Concerta, Vyanase, Dexedrine, and Methedrine and the like are all similar. They are all classed as pharmacological stimulants and they all work in roughly the same way after they are taken, that is by making more dopamine available in those part of the the brain (like the frontal lobes, for example) that are dopamine deficient due to problems (with dopaminergic nerves and dopamine receptors, etc) that have been caused by ADHD.