More compact doses for perioral treatment than for upper facial applications are used because the oral musculature responds much more strongly to the exact same BTX-A dosing. Only one planning of botulinum toxin type B (MyoBloc®/NeuroBloc®) exists. Its sole indication and FDA acceptance lies in treatments of cervical dystonia. https://jetonlinepharma.us/product-category/botulinum-toxins/