There are multiple potions that exist solely within the Chambers of Xeric. These potions are made from herbs obtained from within this raid.
There are three components required to make raid potions. A water-filled gourd vial is obtained by picking an empty gourd vial from gourd trees in farming rooms, and using it on the nearby water spring. Herbs are obtained from farming seeds, which are dropped by certain mini-bosses. Lastly, secondary ingredients such as endarkened juice are dropped by Scavengers.
These three components can be combined to make a potion. The potion has three variants: weak, standard and strong. The weak and strong potions are indicated by (-) and (+) in their name, respectively. The strong variant provides the strongest boost while weak variant provides the weakest boost. The type of potion made depends on the player's Herblore level. Potions can be traded to other players.
An example of how to make a potion is provided below.
There are three types of seeds. These three seeds are always dropped together by the following minibosses: Guardians, Lizardman shamans, and Skeletal mystics. They may also be found by raking the weeds at the end of each floor of the raid.
Buchu herbs are used to make utility potions, golpar herbs are used to make combat potions, and noxifer herbs are used to combine combat potions into overloads.
Each farming room contains two plots from which to farm grimy herbs. The number of herbs obtained per seed scales with the harvesting player's Farming level.
There are three types of secondaries. They are mostly dropped by Scavenger runts and Scavenger beasts which are found in Scavenger rooms. Some other monsters may also drop small quantities of secondaries.
Refer to this table to know which herb and secondary ingredient you must use to make each type of potion. The required Herblore level for the weak, normal and strong variant are also displayed in the table. Noxifer herbs must be combined with an Elder, Kodai and Twisted potion to make an Overload.