The Slime Antidote is a chemical that is used to cancel out the slime that turns people into monsters. In the story Dangerous Currency Huey Dewey and Louie, Honker Muddlefoot and Gizmo Duck are turned to monsters by the slime but when Mrs Crackshell shows up she yells at Gizmo Duck and he reverts back to Normal. Later when Scrooge has a sample of the slime he gives it to Gyro and they see that Mrs Crackshell's bellowing reverses the effect of the slime. Later Scrooge, Darkwing, Gosalyn, and Gizmo Duck use the antidote on the boys and it reverts them back to normal. Later Darkwing and Launchpad use some antidote gas on the Fearsome Four after Gyro modified Darkwing's Gas Gun.