Consequently, differences in species sensitivities to diverse botulinum neurotoxin serotypes preclude extrapolation of animal dose-action relationships to human dose estimates. The specific activity of MYOBLOC (botulinum toxin sort b) ranges between 70 to a hundred thirty Units/ng. Intense Allergic Reactions. Myobloc may lead to allergic reactions, which may be severe. https://myobloc35678.theisblog.com/35629864/5-tips-about-myobloc-you-can-use-today