[8bitsrule]

"Chloroquine is a cheap and a safe drug that has been used for more than 70 years and, therefore, it is potentially clinically applicable against the 2019-nCoV."

https://www.nature.com/articles/s41422-020-0282-0 [04 February 2020, https://doi.org/10.1038/s41422-020-0282-0]

A generic anti-malarial on WHO's Essential Medicines list, about 100 times more expensive in the US (WP)