Allergans latest leaflet: botox can cause botulism

On Allergan’s latest leaflet of 2017 there is a warning at the bottom of page 19 stating that botox can cause botulism. The text is:

“• Spread of toxin effects. In some cases, the effect of botulinum toxin may affect areas of the body away from the injection site and cause symptoms of a serious condition called botulism.
The symptoms of BOTULISM include:
o loss of strength and muscle weakness all over the body
o double vision, blurred vision and drooping eyelids
o hoarseness or change or loss of voice (dysphonia)
o trouble saying words clearly (dysarthria)
o loss of bladder control
o trouble breathing
o trouble swallowing

These symptoms can happen hours, days, to weeks after you receive an injection of BOTOX or BOTOXCosmetic.”

Allergan writes a few lines further down:

“There has not been a confirmed serious case of spread of toxin effect away from the injection site when BOTOX has been used at the recommended dose to treat chronic migraine, severe underarm sweating, blepharospasm, or strabismus, or when BOTOX Cosmetic has been used at the recommended dose to treat frown lines, crow’s feet lines, and/or forehead lines.”

The leaflet can be read here:

https://www.allergan.com/assets/pdf/botox_cosmetic_pi.pdf