ワクチン [vaccine] in Japanese. One of the specialized healing items in Final Fantasies. Usually cures Virus and/or Disease.
Final Fantasy VII

Buy: - (sell: ? gil)
Treasure: Icicle, Northern Crater
Obtain: morph a Dark Dragon or Dragon Zombie
Effect: casts Resist on target
Final Fantasy IX

Buy: 100 gil (sell: 50 gil)
Shop: Esto Gaza (equipment shop), Hilda Garde 1, Ipsen's Castle (Kumool's mogshop), Bran Bal (Moorock's mogshop), Black Mage Village (item shop (disc 4))
Drop: (various late-game enemies)
Steal: (various late-game enemies)
Use: Ether
Description: Cures Virus
Final Fantasy XII
Buy: 200 gil (sell: 100 gil)
Effect: removes Disease from target
Other: affected by Nihopalaoa
Category: Item