Zinc Supplementation Prior to Botox Injections for Spasmodic Dysphonia

Subjects will take a 50 mg zinc gluconate supplement at breakfast for the five days leading up to their next injection appointment. They will also answer questionnaires and provide audio recordings at various time points of the two injection cycles, which is roughly six months.

This is the current standard of care for treatment of spasmodic dysphonia. Botox injection goes into the vocal cord muscle, and will be occur in both the control and experimental arms of the study.