scupper any widespread attempt to use the two drugs against the virus.
They also cautioned that it was vital that patients already taking chloroquine for other illnesses should not be deprived of their supply.
“In some European countries the availability of HCQ and CQ in the pharmacies (outside the hospitals) is already scarce,” Francesca Romana Spinelli, assistant professor at the Sapienza University of Rome and letter author, told AFP.
“This is an emerging problem for many patients already treated with CQ/HCQ for their autoimmune rheumatic disease.”
Both medicines are known to have anti-viral properties and have shown some encouraging results in trials against COVID-19.
But they have a number of potentially serious side effects, and there are fears that treating COVID-19 patients, many of whom are on medication for underlying conditions, could court disaster.
On Wednesday the European Medicine Agency warned that CQ and HCQ should only be used on COVID-19 patients in clinical trials or in case of a “national emergency”.
He said he was concerned “that the diversion of drug supplies away from people with rheumatic and musculoskeletal diseases may compromise the health of this important and sizable group of patients in Europe and beyond.”
In the letter, Italian doctors said using CQ and HCQ as widespread COVID-19 treatments would raise ethical concerns, given their known side effects.