I’ve heard the same, I also know he’s a liar and drugs were known to be all over the White House when he was president. I can believe he doesn’t drink, but his personality and behavior (e.g. working/tweeting hours) say cocaine to me.

https://www.reuters.com/world/us/trump-white-house-pharmacy-improperly-provided-drugs-misused-funds-pentagon-2024-01-28/

https://www.rollingstone.com/politics/politics-features/trump-white-house-drugs-speed-xanax-1234979503/

https://www.nbcnews.com/politics/white-house/white-house-clinic-improperly-distributed-controlled-substances-previo-rcna135787