Different preparations of botulinum toxin
| US generic name | Brand name | Manufacturer | Packaging Units/phial |
|---|---|---|---|
| OnabotulinumtoxinA | Botox | Allergan | 50, 100, 200 |
| AbobotulinumtoxinA | Dysport | Ipsen | 300, 500 |
| IncobotulinumtoxinA | Xeomin | Merz Pharmaceuticals | 50, 100 |
| RimabotulinumtoxinB | NeuroBloc | Eisai Ltd | 2500, 5000, or 10 000 |
These four preparations are available and licensed in the UK for the treatment of cervical dystonia. The units between these different preparations are not equivalent, and the clinician must be vigilant when switching from one preparation to another. As an indication, 1 unit Botox=1 unit Xeomin=3 units Dysport=50 units Neurobloc for cervical dystonia.