Various symptoms such as asthenia, generalized muscle weakness, diplopia, blurred vision, ptosis, dysphagia, dysphonia, dysarthria, urinary incontinence, and breathing difficulties have been observed from hours to weeks following the injection.
There have been reports of death related to the spread of botulinum toxin from swallowing or breathing difficulties. You MUST seek immediate medical attention if swallowing, speech, or respiratory disorders occur.
Hypersensitivity reactions such as anaphylaxis, serum sickness, urticaria, soft-tissue edema, and dyspnea have been reported. Any hypersensitivity to neurotoxin, human albumin, or sucrose can lead to life threatening anaphylaxis. If you experience any of the symptoms, then immediate medical attention is required.
Corneal exposure, ulceration, or ectropion has been reported. The loss of orbicularis muscle can lead to complications.
Xeomin® also contains albumin, which is a derivative of human blood. Therefore, there is a theoretical risk of viral diseases, CJD, or vCJD, although none has ever been reported.