Miracle Cure

The Miracle Cure, called the Miracle Toadley Cure by Dr. Toadley, is an object in Mario & Luigi: Bowser's Inside Story and its 3D remake Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. It was created by Dr. Toadley in his clinic by combining all three Star Cures, which were found throughout the game. The Miracle Cure was used to cure all the infected Toads of the blorbs. Mario and Luigi also used the Miracle Cure to destroy the Dark Star's barrier, allowing them access to Peach's Castle. The Star Cures that create the Miracle Cure are obtained by:

Defeating Wisdurm.
Taking it out of the safe in the Treasure Chamber in the depths of Bowser's Castle.
Defeating Chakron with Snack Basket.

In the game's remake, Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey, it is revealed that, aside from the Miracle Cure, another method of treating the blorbs involves Skeletone Formula:D, which requires merging a piece of the Giga-carrot, the Omega-onion, and the Ever Ice together.