Comparison of botulinum toxin and propranolol for essential and dystonic vocal tremors

CONCLUSION: Essential and dystonic vocal tremors responded differently to treatment. Dystonic vocal tremors responded significantly to treatment with botulinum toxin but not oral propranolol. Essential vocal tremors did not respond significantly to either treatment, perhaps due to the small number of patients, which is a limitation of this research.
Source: Clinics - Category: General Medicine Source Type: research