I just noted that he's still in Broadmoor.
Axel Rudakubana is accused of grievous bodily harm and two other assaults of prison officers while serving a life sentence.
www.bbc.co.uk
Now what 'medication' was involved isn't stated. I strongly suspect it isn't an ADHD medication as it's also mentioned that in Belmarsh he was convinced his food was being poisoned which does suggest a person with a mental illness likely with a personality disorder AND a behavior disorder.
The ultimate example of where all a society can reasonably do is to ensure he can never harm anyone else.
I am reminded that Peter Sutcliffe WAS found guilty of murder but within a similar time-frame he was also ghosted to Broadmoor.
In both cases I strongly suspect that the reason why a plea of not guilty due to insanity were refused was political. People imagine high security psychiatric units are 'a soft option' but as I've mentioned, my wife has done outreach work in both prisons and psychiatric units and when I asked 'which is worse' she didn't even have to think about it. Her opinion was that psychiatric units are far more unpleasent.
Sutcliffe spent 32 years in Broadmoor and I sincerely doubt that someone could fake schizophrania for that long. He was depoted and move back to prison and even then apparently still had to be segregated and carefully monitored. I think an obese septuagenarian with other health conditions was simply considered not to represent a threat to other prisoners. That sticking him in a prison hospital was ample security.
So it's shaping up for Axel Rudakubana to end up following that pathway. Delining into old age and fragility then being put back into a prison but depoted and segragated.