Antidote

An antidote is a substance that can counteract a specific type of poisoning.

Usage
During the Virtuous Mission and Operation Snake Eater missions in 1964, Naked Snake utilized antidotes that were made from Baikal Scaly Tooth mushrooms in order to counteract injested poisons.

During the Outer Heaven Uprising in 1995, the Outer Heaven personnel were advised to carry antidotes at all times when traversing the desert between Building 2 and Building 3 of Outer Heaven's fortress. FOXHOUND operative Solid Snake, via Resistance member Jennifer, managed to procure and use the antidote for similar purposes.