worldpharmanewsApril 09, 2020
Tag: Chloroquine , hydroxychloroquine , Azithromycin , COVID-19
Chloroquine, hydroxychloroquine and azithromycin are being used to treat and prevent COVID-19 despite weak evidence for effectiveness, and physicians and patients should be aware of the drugs' potentially serious adverse events, states a review in CMAJ (Canadian Medical Association Journal).
"Physicians and patients should be aware of several rare but potentially life-threatening adverse effects of chloroquine and hydroxychloroquine," says Dr. David Juurlink, Division of Clinical Pharmacology and Toxicology, Sunnybrook Health Sciences Centre, and a senior scientist at ICES.
The review provides an overview of potential harms associated with these drugs as well as their management based on the best available evidence.
Potential adverse effects include
The review summarizes the poor quality of evidence suggesting that these treatments might be beneficial in patients with COVID-19 and cautions that it is possible that these treatments could worsen the disease.
"Despite optimism (in some, even enthusiasm) for the potential of chloroquine or hydroxychloroquine in the treatment of COVID-19, little consideration has been given to the possibility that the drugs might negatively influence the course of disease," says Dr. Juurlink. "This is why we need a better evidence base before routinely using these drugs to treat patients with COVID-19."
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