XEOMIN® 100U powder for solution for injection contains 100 units of incobotulinumtoxin A. Native Botulinum toxin type A is a high molecular weight complex, which, in addition to the toxin (150 kD), contains other bacterial non-toxic proteins, like haemagglutinins and non-haemagglutinins. In contrast to conventional preparations containing the botulinum toxin A complex, Xeomin contains pure (150 kD) toxin since it is free from complexing proteins and thus has a low foreign protein content.