NeuroBloc 10000 U/ml is a medicine used to treat cervical dystonia in adults. Cervical dystonia, which is also known as torticollis, is a disorder when the neck muscles contract, causing abnormal movement and twisting of the neck and unusual positioning of the head. NeuroBloc 10000 U/ml contains the active substance botulinum toxin type B. NeuroBloc is available as a solution for injection (10,000 units [U] per millilitre) and (5,000 units [U] per millilitre). It is only used in hospitals, by an experienced doctor in the treatment of cervical dystonia and in the use of botulinum toxins.