An immune-modulating compound used to reduce the symptoms of multiple sclerosis and now showing potential against coronaviruses, interferon beta is the last of the WHO's Covid-19 Solidarity trial candidates to get the Chemistry in its element treatment.
The unexplained appearance and dramatic spread of a new form of HIV drug ritonavir hurt patients and cost its makers almost $250 million. Alexander Whiteside on the chemical phenomenon that links Irving Langmuir, H G Wells and Kurt Vonnegut.
Old drugs sometimes find their way back into the news. Thanks to the Covid-19 pandemic and some very high profile backing, malaria drugs chloroquine and hydroxychloroquine are making headlines worldwide. Ben Valsler explores both the history and the hype.