Reports of adverse effects of Covid-19 treatments reach more than 500 cases, according to a point from the Medicines Agency (ANSM), which emphasizes in particular that the “cardiotoxicity signal” of hydroxychloroquine “continues to to be confirmed. “
The health agency also indicates that it has been informed by the Spanish Medicines Agency (AEMPS) of the occurrence in patients with Covid-19, treated with hydroxychloroquine, of known neuropsychiatric disorders: either six cases including three suicides and a suicide attempt. The French agency, for its part, had no reports of serious neuropsychiatric disorders comparable to this date.
These neuropsychiatric disorders appeared mainly during the first days of treatment, at high doses, including in patients with no psychiatric history.
The ANSM recalls that the risk of neuropsychiatric disorders is already known with hydroxychloroquine and chloroquine (psychosis, nervousness, insomnia, depression, etc.) and could be aggravated by the context linked to the pandemic and confinement. An evaluation on this subject is underway at European level.
Regarding the other side effects monitored, the ANSM notes that “the number of cardiac side effects of treatment with hydroxychloroquine alone or in combination has seen a less significant increase compared to previous weeks”. She reports a fairly significant drop in usage both in the city and in the hospital.
Cardiac side effects
In all, “as of May 12, 562 cases of adverse reactions were declared in connection with an infection with Covid-19, including 78% of serious cases, concerning 64% of men “, details the ANSM, which announced more than 300 cases on April 25 and a hundred on April 10.
Among these cases, 348 (62%) are attributed to the drugs used in the treatment of Covid-19, the other cases being divided between drugs that may have aggravated the disease (12%) and cases related to other drugs prescribed for these patients (25%).
Hydroxychloroquine (Plaquenil) represents the majority of cardiac adverse reactions, or 141 out of 159 cases.
The cardiac effects of hydroxychloroquine account for 69% of its undesirable effects (hepatic, digestive …) listed against 44% for Kaletra (an antiretroviral combining lopinavir and ritonavir).
Hydroxychloroquine, a derivative of the antimalarial chloroquine, is known to cause electrical abnormalities in the heart’s function in some patients, visible on the EKG, which can lead to heart rhythm disturbances or even death.
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