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The nonprofit watchdog group successfully petitioned the FDA in 2008 to require a warning for Botox and related products regarding the risk of distant spread of the toxin. In its latest petition to the agency, it says that the injectables need additional warnings about the possibility of iatrogenic botulism with initial and repeated doses and that individuals who contract the condition may need botulinum antitoxin to avert temporary muscle paralysis, hospitalization, and death.
The current warning does not contain any information about the potential need for antitoxin and downplays the need for giving antitoxin in the settings of excessive dosing, accidental injection, and oral ingestion, said Public Citizen.
“Our petition is based on clear postmarketing evidence that refutes industry propaganda claiming that Botox and related drugs are ‘always safe’ and that no ‘definitive’ cases of botulism have occurred with recommended doses,” Azza AbuDagga, PhD, health services researcher at Public Citizen’s Health Research Group, said in a statement.
Public Citizen said that using data from the FDA’s Adverse Event Reporting System (FAERS), it found 5414 reports of serious outcomes from botulinum toxin products from January 1989 through March 2021. Almost 22% involved cosmetic indications and about 78% involved therapeutic indications.
Of the 5414 reports, 121 (2%) specified botulism as an adverse reaction; 89 involved therapeutic uses of a botulinum toxin products, and 32 involved cosmetic uses. Many of those 121 reports involved doses within the recommended range for the indication, according to Public Citizen.
The group is also asking the FDA to remove what it calls misleading promotional statements in the labeling of Botox and Botox Cosmetic and from the medication guides for those products. The labels state that there have been “no definitive serious adverse event reports of distant spread of toxin effect” with either the cosmetic use or for use in treating chronic migraine, severe underarm sweating, blepharospasm, or strabismus. These statements do not appear in similar labeling in other countries, such as Canada and the United Kingdom, said Public Citizen.
“The FDA needs to implement our two requested actions quickly to warn the public in unambiguous terms about the risk of botulism associated with the use of Botox and related drugs,” Dr. AbuDagga said in the Public Citizen statement. “This will allow health care professionals and patients to make more informed decisions about the benefit-risk profile of these widely used drugs.”
The Public Citizen petition would apply to all seven approved botulinum toxin biological products: abobotulinumtoxinA (Dysport), daxibotulinumtoxinA-lanm (Daxxify), incobotulinumtoxinA (Xeomin), onabotulinumtoxinA (Botox, Botox Cosmetic), prabotulinumtoxinA-xvfs (Jeuveau) and rimabotulinumtoxinB (Myobloc).
An FDA spokesperson said the agency is reviewing the citizen petition, and that generally the agency does not comment on pending petitions. “When we respond to the petition, we will respond directly to the petitioner and post the response in the designated agency docket,” the spokesperson told this news organization. At press time, Botox manufacturer AbbVie had not responded to a request for a comment.
Botulinum toxin is the most-used product for nonsurgical cosmetic procedures, according to the International Society of Aesthetic Plastic Surgery (ISAPS). The ISAPS reported that there were more than 7 million botulinum toxin procedures performed by plastic surgeons worldwide in 2021.
The American Society of Plastic Surgery reported that its members performed 4.4 million Botox procedures in 2020, while the American Society of Dermatologic Surgery (ASDS) said its members performed 2.3 million wrinkle-relaxing procedures in 2019, a 60% increase since 2012.