Botox is a brand of botulinum toxin type A; other brands exist, but units are not interchangeable and dosing differs.

https://www.scribd.com/document/984154100/Botox-for-Crow-s-Feet-vs-Forehead-Lines-Which-to-Treat-First-208546

Botox is a brand of botulinum toxin type A; other brands exist, but units are not interchangeable and dosing differs.