Doctors are using it in certain coronavirus (COVID-19) cases, but they’re emphasizing that it has to be used responsibly and cleared by medical experts. UPDATE -- MARCH 30, 2020: Michigan coronavirus cases up to 6,498; Death toll now at 184Michigan Gov. Doctors and hospitals treating patients with severe COVID-19 aren’t dismissing the possibility that hydroxychloroquine might be beneficial, and most are using it on COVID-19 positive patients, especially the more severe cases. Doctors said that’s because the potential benefit, which remains completely unknown right now, outweighs the harm in severe cases. Sandoz, the manufacturer of Plaquenil, has donated 30 million doses of the drug to the Strategic National Stockpile as a possible treatment for COVID-19 patients.