Because hydroxychloroquine is a slightly modified form of chloroquine. HCQ is a chloroquine that has had a single hydroxyl (oxygen + hydrogen) group added. Both drugs have similar modes of action. And the use of BOTH is being investigated in actual legitimate clinical trials.
[Because hydroxychloroquine is a slightly modified form of chloroquine. HCQ is a chloroquine that has had a single hydroxyl (oxygen + hydrogen) group added. Both drugs have similar modes of action. And the use of BOTH is being investigated in actual legitimate clinical trials. ]