Prescriptions for the anti-malarial drug hydroxychloroquine jumped almost 2,000% during the week in March when President Trump promoted it to treat COVID-19.

A new study in the Journal of the American Medical Association found that from March 15 to March 21, prescriptions for a 30-day supply of hydroxychloroquine surged 1,977%, from 2,208 to 45,858. It also found that prescriptions for a 30-day to 60-day supply jumped 179%, from 70,472 to 196,606, and prescriptions for a more than 60-day supply increased 182%, from 44,245 to 124,833.

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