The Bristol-Myers Squibb pill is a combination antiviral drug that contains three nucleoside analogues (baloxavir marboxil, remdesivir, and lopinavir/ritonavir). The drug was developed using synthetic chemistry technology to create three drugs that work together to inhibit the replication of the COVID 19 virus. It has been shown to be safe and effective in previous clinical trials and is currently being evaluated in a Phase III clinical trial.