Hydroxychloroquine is definitely different from most of the bogus medical stuff going around.

When hydroxychloroquine was first proposed for COVID there was actually reason to think it might help. It is known to interfere with one of the mechanisms that COVID uses to enter cell membranes. The FDA in the US and equivalent regulators in many other countries gave it an emergency use authorization.

A few months later with more data it was found that it had some bad side effects and that it wasn't actually useful against COVID (most of the time COVID used a mechanism other than the one that hydroxychloroquine interfered with to enter cells).