Clostridium botulinum is a naturally occurring toxin. Manufacturers use a selected strain, bred biologically in optimal conditions, to produce therapeutic botulinum toxin products.1 Botulinum toxin type A has a combined (neurotoxin + accessory proteins) molecular weight of 900 kDa, of which 150 kDa is the neurotoxin.2
XEOMIN is made from a purified botulinum toxin type A that is produced from fermentation of Hall strain Clostridium botulinum serotype A.1 The molecular weight of XEOMIN is 150 kDa because the proprietary manufacturing process of XEOMIN isolates the active toxin from accessory proteins and reduces the proteins. As a result, XEOMIN is formulated to have high biological activity with a low protein load.3
The clinical significance of the absence or presence of accessory proteins, including any impact on safety or efficacy, has not been established. This information about the XEOMIN manufacturing process and the properties of incobotulinumtoxinA is not intended to imply superiority over other botulinum toxin A products.
The potency units of XEOMIN are specific to the preparation and assay method used and are not interchangeable with other preparations of botulinum toxin products. Therefore, Units of biological activity of XEOMIN cannot be compared to or converted into Units of any other botulinum toxin products.
XEOMIN blocks cholinergic transmission at the neuromuscular junction by inhibiting the release of acetylcholine from peripheral cholinergic nerve endings. This inhibition occurs according to the following sequence: neurotoxin binding to cholinergic nerve terminals, internalization of the neurotoxin into the nerve terminal, translocation of the light-chain part of the molecule into the cytosol of the nerve terminal, and enzymatic cleavage of SNAP25, a presynaptic target protein essential for the release of acetylcholine. In both muscles and glands, impulse transmission is re-established by the formation of new nerve endings.1Watch the Video
XEOMIN® (incobotulinumtoxinA) for injection, for intramuscular or intraglandular use, is a prescription medicine that is used to treat adults with:
See full prescribing information for complete BOXED WARNING.
The effects of XEOMIN and all botulinum toxin products may spread from the area of injection to produce symptoms consistent with botulinum toxin effects. These symptoms have been reported hours to weeks after injection. Swallowing and breathing difficulties can be life threatening and there have been reports of death. The risk of symptoms is probably greatest in children treated for spasticity but symptoms can also occur in adults, particularly in those patients who have underlying conditions that would predispose them to these symptoms.
Chronic Sialorrhea: The most commonly observed adverse reactions (incidence ≥3% of patients and greater than placebo) for XEOMIN were tooth extraction (5%), dry mouth (4%), diarrhea (4%), hypertension (4%), fall (3%), bronchitis (3%), dysphonia (3%), back pain (3%) and dry eye (3%).
Upper Limb Spasticity: The most commonly observed adverse reactions (incidence ≥2% of patients and greater than placebo) for XEOMIN were seizure (3%), nasopharyngitis (2%), dry mouth (2%), and upper respiratory tract infection (2%).
Cervical Dystonia: The most commonly observed adverse reactions (incidence ≥5% of patients and greater than placebo) for XEOMIN 120 Units and XEOMIN 240 Units, respectively, were: dysphagia (13%, 18%), injection pain site (9%, 4%), neck pain (7%, 15%), muscle weakness (7%, 11%), and musculoskeletal pain (7%, 4%).
Blepharospasm: The most commonly observed adverse reactions (incidence ≥5% of patients and twice greater than placebo) for XEOMIN were eyelid ptosis (19%), dry mouth (16%), dry eye (16%), visual impairment (12%), diarrhea (8%), headache (7%), dyspnea (5%) and nasopharyngitis (5%).
Co-administration of XEOMIN and aminoglycoside antibiotics or other agents interfering with neuromuscular transmission, e.g., tubocurarine-type muscle relaxants, should only be performed with caution as these agents may potentiate the effect of the toxin.
Use of anticholinergic drugs after administration of XEOMIN may potentiate systemic anticholinergic effects. The effect of administering different botulinum toxin products at the same time or within several months of each other is unknown. Excessive neuromuscular weakness may be exacerbated by administration of another botulinum toxin prior to the resolution of the effects of a previously administered botulinum toxin.
There are no adequate data on the developmental risk associated with the use of XEOMIN in pregnant women. XEOMIN should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
Safety and effectiveness of XEOMIN in patients less than 18 years of age have not been established.
Please see accompanying full Prescribing Information, including BOXED WARNING.