Support group for parents?

This subject is not really that relevant to this site, but I'm kind of desperate! While I don't always post here, I have found this site to be a life-saver, a sanity-maintainer, a reality-checker and an amazing source for new ideas and fresh perspectives on being married to an ADHD'er.

As many of you will know, having a spouse with the condition often means having a child / children with it too. Our teenager has pretty severe hyperactive / impulsive ADHD, which we are really struggling to manage. Meds and therapy are not really adhered to despite "our" very best efforts (little effort made on behalf of said teen!), and the symptoms are so mind-boggling sometimes, that we are at a total loss and at our wit's end, and feel like we have tried everything but nothing succeeds for more than a week or two at a time. 

My question is: can anyone recommend a quality support site like this one, but for parents of ADHD'ers?