Coronavirus medication: What works, what doesn't

Remdesivir, Leronlimab, Lopinavir, Ritonavir, Chloroquine, Hydroxychloroquine - just some of the many medications currently being tested as treatments for Covid-19. What they all have in common is that they were originally developed to treat other diseases. As yet there are no reliable studies demonstrating safety and efficacy against the coronavirus disease. Yet politicians such as Donald Trump are hailing them as breakthroughs in treatment.