Elon Musk and Trump are touting a 1940s malaria pill as a potential coronavirus treatment. But supplies are already running short as prescriptions spike.

Demand for malaria pills has skyrocketed on hopes that the drug can treat COVID-19, the disease caused by the new coronavirus.
Demand has ramped up so much that the drugs chloroquine and hydroxychloroquine are now in shortage, according to a pharmacy group that tracks supplies of medicines.