Greater Heal Potions, commonly abbreviated to GHPs, are potions that restore 9-36 Hit Points to the user, similar to the Greater Heal spell. They are more effective than Lesser Heal Potions, but still less effective than Full Heal Potions.
They are widely used by all players, as they are relatively affordable and allow healing to take place without a cleric. Clerics, however, are the only class that can craft them. Like all potions, they are sold in the Potion Shop, and only up to 20 may be carried at one time.