It’s because of the report that came out recently that showed trumps doctor was called “the candy man”, who handed out uppers and downers by the handfuls to White House staff.
I’m pretty sure this is fairly common for folks working in the White House, but apparently under Trump the drug usage was especially egregious
There's a Cinco de mayo (2016?) photo of trump in his home office where in the background is a drawer open containing a British allergy medication. A med that is illegal in the USA because it contains amphetamines. Suspicious at best