It has been widely used as anti-malarial drug for decades. Of...

It has been widely used as anti-malarial drug for decades. Of course it can have side effects and may not be suitable for everyone. See the Herald Sun article above on trial. As you say wrong forum.

Breakthrough: Chloroquine phosphate has shown apparent efficacy in treatment of COVID-19 associated pneumonia in clinical studies

Jianjun Gao, Zhenxue Tian, Xu Yang

The coronavirus disease 2019 (COVID-19) virus is spreading rapidly, and scientists are endeavoring to discover drugs for its efficacious treatment in China. Chloroquine phosphate, an old drug for treatment of malaria, is shown to have apparent efficacy and acceptable safety against COVID-19 associated pneumonia in multicenter clinical trials conducted in China. The drug is recommended to be included in the next version of the Guidelines for the Prevention, Diagnosis, and Treatment of Pneumonia Caused by COVID-19 issued by the National Health Commission of the People's Republic of China for treatment of COVID-19 infection in larger populations in the future.

https://www.jstage.jst.go.jp/article/bst/14/1/14_2020.01047/_article