Funny with how utterly toxic this drug seems to be labeled that websites prior to 2020 barely mention heart complications, if at all, as a side effect, let alone a common one.
https://www.lupus.org/resources/drug...oxychloroquine
Billions of doses given for over a century. Many taking it regularly for arthritis, lupus, etc.. and you'd be hard pressed to find a single death directly related to its use. Prior to its politicization.