Magic Mentar

Magic Mentar is an apothecary in Buccaneer's Den which, during  Ultima IV, is run by Shannon.

The shop is protected from entry by an energy field just outside its secret entrance, and an unexplained balron immediately charged the Stranger upon the hero's entry, making it impossible to shop for  reagents without dealing with the creature. No further mention was made of this beast; the only hint to its existence was a vague warning from the mage, Ignap, prior to the Stranger's appearance in the shop.

Trivia

 * The word "Mentar" in this shop's name may be a subtle nod to the spell from  Ultima III which, at the time, was equivalent to the Fireball spell.
 * In the Nintendo port of Ultima IV, Starlight reveals that the shop also sells manroot, if the proper password is told to the shopkeeper. Then, manroot could be purchased for 20 GP apiece. This characteristic is unique to the Nintendo port.