Hydroxychloroquine sulfateProduct ingredient for Hydroxychloroquine

Hydroxychloroquine is a racemic mixture consisting of an R and S enantiomer.² Hydroxychloroquine is an aminoquinoline like chloroquine.¹³ It is a commonly prescribed medication in the treatment of uncomplicated malaria, rheumatoid arthritis, chronic discoid lupus erythematosus, and systemic lupus erythematosus.¹³ Hydroxychloroquine is also used for the prophylaxis of malaria in regions where chloroquine resistance is unlikely.¹³ It was developed during World War II as a derivative of quinacrine with less severe side effects.⁶ Chloroquine and hydroxychloroquine are both being investigated for the treatment of SARS-CoV-2.⁷

The FDA emergency use authorization for hydroxychloroquine and chloroquine in the treatment of COVID-19 was revoked on 15 June 2020.¹⁴

Hydroxychloroquine was granted FDA approval on 18 April 1955.¹³

A recent study reported a fatality in the group being treated with hydroxychloroquine for COVID-19.¹⁰