Hero Drink

Hero Drink (英雄の薬, Eiyū no Kusuri), also known as Hero Cocktail and Hero, is a recurring item in the Final Fantasy series. It is used to boost the Stats of a playable character either temporarily in-battle, or permanently outside of battle. In some games it makes the target invincible.

Final Fantasy V
Hero Cocktail is an item used in the Mix process. It raises Strength.

Crisis Core -Final Fantasy VII-
The Hero Drink is an item used in Materia Fusion. It gives the new Materia an effect of boosting the ATK stat by 1. Hero Drinks can be acquired from the enemies Master Blade and Iron Claw, as well as found from various treasure chests during missions.

Final Fantasy VIII
Hero is an item that makes a character invincible to all forms of damage. Another item, called Hero Trial, also exists that also makes a character invincible, and despite its item description, works 100% of the tine. A stronger item, Holy War, grants invincibility to the entire party, and the item Holy War Trial, does the same.

Heros are most readily acquired by modifying Laguna's card into 100 with Quezacotl's Card Mod ability. Some can also be stolen from Seifer, and there is a chance to receive some through Angelo Search.

Final Fantasy X
Hero Drink is not an item but rather a Mix that boosts the critical hit rate for one character. There is also a stronger Mix called Miracle Drink that boosts the critical hit rate for all party members.

Final Fantasy X-2
The Hero Drink is an item that, when used on a character, makes them invincible to all enemy attacks. Despite its use, it can only be sold for 25 gil. It can only be stolen from Shuyin in the final battle, and thus the player must go through the entire game again if they wish to stock up on the item. Hero Drink can also be used through the Mix ability, as well as the stronger Miracle Drink which affects the entire party.