In X-Men: The Last Stand, what is the name of the mutant cure developed by Worthington Labs?

In X-Men: The Last Stand, the treatment developed by Worthington Labs is called the mutant cure.

The treatment is derived from the abilities of a young mutant named Jimmy, who is known as Leech. It suppresses or removes mutant powers, allowing the film to explore whether mutation should be treated as an illness or accepted as part of identity.

Worthington Labs presents the treatment as a medical breakthrough, but the announcement divides the mutant community. Some mutants want the option of becoming human, while others see the cure as an attack on their existence.

The movie does not give the treatment a separate scientific brand name comparable to a drug trademark. It is generally referred to in dialogue and promotional material as the mutant cure, which distinguishes it from comic-book concepts such as the Legacy Virus.