looking at the information available about Velpatasvir and Ledipasvir, we can see that both are NS5A inhibitors.
In my understanding, this means that they do action in similars ways in the replication process of the HCV virus .....
So, let's assume that one gets treated with Sofosbuvir+Ledipasvir and ...will unfortunately relapse. Does it make any sense to get treated again, but this time with Sofosbuvir+Velpatasvir?
P.S. perhaps it is a stupid question, but my logic got locked on this....