Mud Peppers are an alchemy ingredient.
Mud Peppers only sold by one alchemist; before that, the player will find Mud Peppers in containers or receive them as rewards, as Levitate is needed to progress through the Volcano. There is little need to buy Mud Peppers, however, as Levitate is only used two more after leaving Prehistoria. Buying five will last the player the rest of the game.
Acid Rain - Atlas - Barrier - Call Up - Corrosion - Crush - Cure - Defend - Double Drain - Drain - Energize - Escape - Explosion - Fireball - Fire Power - Flash - Hard Ball - Heal - Lance - Laser - Levitate - Lightning Storm - Miracle Cure - Nitro - One Up - Reflect - Regrowth - Revealer - Revive - Slow Burn - Speed - Sting - Stop - Super Heal