Perhaps successfully.
The truth is we don't really know which drugs deployed have helped, hurt, or been useless.
There's a definite survivor bias at play.
Most folks who get the virus are going to survive it. I haven't seen figures but I assume that is true of ICU patients as well. Just because they get better, as most patients do, doesn't mean that any drug given to them is the reason they got better. But it's easy to believe that any given drug was the reason for the successful convalescence. While any folks that received any specific drug but died, don't exactly have much chance to spread that news.
Trying unproven drugs is fine when patients are in desperate need of treatment and options are limited and vaccines still some time away. But studies will determine what works and what doesn't, ascertain safety and dosages and such. Again, most anti-virals are likely to be of help for those with mild symptoms, if they work at all against Covid-19.