<unk>  is a neurotoxic protein that is FDA approved for the treatment of adults with cervical dystonia to reduce the severity of abnormal head position and neck pain associated with cervical dystonia. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include dry mouth, dysphagia, dyspepsia, and injection site pain.
Rimabotulinumtoxinb
IncobotulinumtoxinA
Botulinum antitoxin
Botulinum toxin
Trospium
Chymopapain
Hexobendine
Metreleptin