The president promoted the combination of hydroxychloroquine and an antibiotic for treating COVID-19. But a new study suggests it provides no benefits.
An employee in Nantong, China, checks the production of chloroquine phosphate, an old drug for the treatment of malaria.
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A medicinal chemist addresses questions about chloroquine and hydroxychloroquine: what it is, whether it is effective against COVID-19 and whether it can treat and/or prevent this disease.