The potion may be used on an afflicted villager, who will temporarily become a Mort'ton local and reward the player. In addition to Shade keys and Level 1 clue scrolls, the possible rewards include all the items required to make the potion, allowing the process to be repeated for an inexpensive, if slow, method of training Herblore. It may also be used on the sacred flame in the Temple of Mort'ton to produce serum 208 (see the Shades of Mort'ton minigame for more on that process). Serum 208 is required during the quest, and will give greater rewards when used on the afflicted.