From Dragon Quest Wiki
Panacea (also called lesser panacea) is a healing item in the Dragon Quest series. It removes both Poison and Paralysis, and restores a lot of HP (around 90).
Dragon Quest IX: Sentinels of the Starry Skies
Panaceas can be sold for 87 gold coins. They can drop from Blastoads and Cureslimes. You need 1 Special medicine, 1 Superior medicine, and 1 Moonwort bulb to create one using Alchemy.