The French government on Wednesday (May 27) cancelled a decree allowing hospital doctors to administer hydroxychloroquine.
As a treatment to patients suffering severe forms of Covid-19, the illness caused by the new coronavirus.
The announcement comes two days after the World Health Organisation said it was pausing a large trial of the malaria drug due to safety concerns.
British medical journal The Lancet has reported that patients getting hydroxychloroquine had increased death rates and irregular heartbeats, adding to a series of other disappointing results for the drug as a way to treat Covid-19.
US President Donald Trump and others have pushed hydroxychloroquine in recent months as a possible coronavirus treatment.
France decided at the end of March to allow the use of hydroxychloroquine in specific situations and in hospitals only.
No vaccine or treatment has yet been approved to treat Covid-19 which has killed more than 350,000 people globally.