I am a mom to a wonderful soon to be 7 year old who has severe ADHD . Currently he is on guanfacine HLC 2 mg a day. I am trying to steer clear of putting him on a stimulant because he was on vyvanse and I noticed a huge increase in his temper and aggression . I notice the guanfacine working but not huge amounts.. I'm looking for maybe some advice how to go about dealing with my son's "meltdowns " he will go through spurts of being pretty mellow and more contained but at the snap of a finger he becomes so agitated and aggressive. He completely shuts down and I just do not know how to go about it anymore. I have tried many different approaches but nothing is seeming to work. It's an ongoing issue of him just having such a defiant attitude twords authority. Nothing I do seems to help . I am looking to get maybe some advice on different approaches.