Clonazepam (klonopin) 24mg a day too much?

I have been taking Clonazepam for about 25 years or so for seizures and panic attacks. My Doctor has raised my dose to 24mg a day. I seem to be doing fine on this dose. No memory loss, speech problems, walking problems, sleepiness. I am a little tired though. Could be to lack of oxygen from low blood cells because that it just started when it occured. I'm taking iron with a glass of orange juice now. My Doctor and I know 20mg a day is the limit but he thinks 24mg should be fine do to my tolorance. I tried a new medicine (can't even pronounce the name). I dropped my Clonazepam down to 6mg a day over two months. other than the seizures and panic attacks came back, I was surprised that I had no withdrawl (withdrawal) systems from the Clonazepam except for little appitite during that time. Lost 23 lbs! I am back up to 24mg a day. For me, even with my tolorance, taking Clonazepam as directed for a medical reason and not for recreation is not addictive. My question: is that much going to hurt my health? It is about the only dose that gives me a good quality of life. Anybody else in my situation. I'm on medical disibility so I can get two months of medicine for $2. Lucky for that!