https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-revokes-emergency-use-authorization-chloroquine-and

University of Michigan - Ann Arbor

- On March 28, 2020 the FDA approved an emergency use authorization for 
   hydroxychloroquine despite lack of evidence
- On May 1, 2020, the FDA approved an emergency use authorization for 
   the drug remdesivir to to be distributed in USA and administered to patients 
   with COVID-19. 
- On June 15, 2020 a warning was put out by the FDA that they are revoking 
   the authorization to use Chloroquine and Hydroxychloroquine on patients 
   with COVID-19 as it may reduce the effectiveness of remdesivir


Example of research inefficiencies stemmed from contradictions

Lenzer, Jeanne (2020) Covid-19: US gives emergency approval to
hydroxychloroquine despite lack of evidence 
doi: 10.1136/bmj.m1335
Published: April 1, 2020

https://www.researchgate.net/profile/Jeanne_Lenzer/publication/340370823_Covid-19_US_gives_emergency_approval_to_hydroxychloroquine_despite_lack_of_evidence/links/5ead413592851cb2676d0161/Covid-19-US-gives-emergency-approval-to-hydroxychloroquine-despite-lack-of-evidence.pdf

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