<human>:  Why is the drug Botox called Botox?
<bot>: Botox is a trademark of Allergan, the company that makes Botox. The name Botox comes from the Latin word botulus, which means "purse" or "bag". In the early 1900s, a German scientist named Paul Ehrlich developed a drug called toxoid. Toxoid is a substance that is harmless to humans, but still produces an immune response in a person. Botox is a toxoid that is used to treat muscle spasms.