Cadava berries

Cadava berries are pink, poisonous berries. They can be found south of Varrock, just west of the East Varrock Mine, and are required for the Romeo and Juliet quest.

Three cadava berries can be traded at the Apothecary in Varrock for a cadava potion, a quest item needed for the said quest. This potion is untradable and cannot be created after the quest is finished. When a cadava potion is drunk, the drinker will fall into a deep sleep and (allegedly) wake up hours later.

A player can drink cadava potions in the Apothecary; once he drinks it, the screen will spin and black out, the player having collapsed on the floor. After a few seconds, the player and the screen will return to normal, and the apothecary owner will express his concern. No items will be lost from this procedure other than the potion.