He is hopped up on Sudafed most of the time
That might be part of his regimen.
But his physical behaviors suggest heavy amphetamine use and it's been well documented for at least 25 years that he prefers to literally snort crushed Adderall.
And that addiction *must* be tempered with a combination of various tranquilizer drugs or he would find it very difficult to sleep.
That would lead to extreme manic-depressive mood swings, erratic judgement, fits of rage and paranoia and short bursts of exhausted collapse.
oh wait.......