Old School RuneScape Wiki
Old School RuneScape Wiki

Serum 207 detail.png

Serum 207 is a temporary cure to the afflicted villagers of Mort'ton, who are otherwise incoherent. A player who has read the Diary of Herbi Flax during the quest Shades of Mort'ton, and has a Herblore level of at least 15, may produce it by adding Tarromin and Ashes to a vial of water, giving 50 herblore experience.

The potion may be used on an afflicted villager, who will temporarily become coherent and reward the player. In addition to Shade keys, 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.

Making serum 207 is a good option for training Herblore using tarromin. The only other potion that can be made with tarromin is strength potions, which give the same xp but the secondary, limpwurt root, is harder to find. To dispose of the potions afterwards, they can be used on afflicted, or withdrawn from the bank in noted form and dropped. Alternatively the vials can be emptied allowing the reuse of the vials. This is however not recommended as it takes a lot of time, and you can buy vials of water 100 at a time thanks to water-filled vial packs. The disadvantage of making serum 207 is that there is no make all option, each potion must be made manually by using ashes on tarromin potions. These are most commonly used within Wintertodt.


Serum 207 (3).png Serum 207
Herblore icon.png Store value Alchemy value -
50 XP 14 8 -
Herblore.png Herblore level 15
Vial of water.png Vial of water 1
Tarromin.png Tarromin 1
Ashes.png Ashes 1

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 1.png Coins Unknown Common Not sold
Swamp paste.png Swamp paste Unknown Common 81
Olive oil(1).png Olive oil(1) 1–4 Common 28–112
Olive oil(2).png Olive oil(2) 1–4 Common 27–108
Olive oil(3).png Olive oil(3) 1–4 Uncommon 37–148
Olive oil(4).png Olive oil(4) 1–2 Uncommon 20–40
Logs.png Logs 1–5 Common 138–690
Grimy tarromin.png Grimy tarromin 1–5 Common 132–660
Hammer.png Hammer 1 Common 64

Note that none of these items are noted.


  • Serum 207 is often used as a cheap way of training herblore.