I have a question that may or may not have an answer. In fact, the answer may be easily found on this site I'm just to lazy or unobservent to have found it yet.

Is there a chart or relative comparison post about the differing strengths of ADHD medications? In other words, I know they all have somewhat different side-effects and a persons individual responses may vary, but is there a continuum of strengths such as the Ritalin class are less stimulating than the dextroamphetamines (Adderall)? THe last comparison is not necessarily the case but I needed an example of what I'm looking for. 

My reason, my son was switched from Methylin 5mg three times a day to Concerta 18mg once a day (he learned how to swallow a pill!) because we'd been having rather drastic roller coastering on the three times a day dosing. On the Concerta he is MUCH smoother, and happier I believe, during the day. The Concerta and it's maintenance is monitored by his child psychiatrist but at his recent yearly physical the GP felt he might be overmedicated and told me there are several other ADHD medications that come in lower doses than 18mg. I'm a little confused because I got the impression from his psychiatrist that, although there are lower mg dosages on other medications, the Methylin class is the mildest and a first line for younger children if they respond well to treatment.

Probably too much personal info when all I need is a chart or something but perhaps the background might help you experts out there answer more completely.

Thank you,

FamilyNut