A federal appeals court in New Orleans has revived a lawsuit by three doctors who say the Food and Drug Administration overstepped its authority in a campaign against the use of a drug that is not approved to treat COVID-19.

A Florida teacher hospitalized with COVID-19 has died after her husband unsuccessfully sued to force doctors to treat her with ivermectin, a drug popular among some skeptics of accepted coronavirus treatments despite a lack of studies proving its effectiveness.

Health experts and medical groups are pushing to stamp out the growing use of a decades-old parasite drug to treat COVID-19.

Health experts and medical groups are pushing to stamp out the growing use of a decades-old parasite drug to treat COVID-19.