Serum 208 is a permanent cure for the afflicted villagers of Mort'ton. It is used during the Shades of Mort'ton quest to turn Afflicted NPCs back into normal characters so the player can interact with them. It is made by using Serum 207 on the sacred flame at the rebuilt temple.
It is suggested it be used on Razmire Keelgan so he will always be coherent for the player and open his general and builder's stores. When used on an afflicted villager, they will turn into Mort'ton locals and reward the player with items like Olive oil, Tarromin, and Coins.
Although it is a "permanent" cure, the villagers will always return to their afflicted state, except for Razmire and Ulsquire Shauncy when talked to. Therefore, there is no way to permanently "clean up" Mort'ton.
Cure rewards
Curing the affliction of one of the Mort'ton villagers will cause them to give you one of the following items:
Item Quantity Rarity GE market price 
Coins 30–37 Common Not sold
Swamp paste 15–27 Common 1,335–2,403
Limestone brick 1–5 Common 174–870
Grimy tarromin 2–5 Common 276–690
Olive oil(1) 2–5 Common 56–140
Olive oil(2) 3–4 Common 81–108
Olive oil(3) 2–3 Uncommon 74–111
Olive oil(4) 1–3 Uncommon 20–60
Logs 2–4 Common 236–472
Oak logs 1–5 Uncommon 130–650
Willow logs 1–4 Uncommon 18–72
Maple logs 1 Rare 10
Bronze key crimson 1 Uncommon Not sold
Bronze key red 1 Rare Not sold
Bronze key brown 1 Rare Not sold
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