Mede is located near the center of Nivalis. She sells healing items made out of cactus. Her items are imported from a long way away (from Tulimshar), so she must needs pass on the overhead to her customers; but while you are visiting Nivalis surely you can patronize the local merchants.

Items sold by Mede:

• Cactus Drink (50 GP)
• Cactus Potion (70 GP)

You can find the script here.