Potion of blood
| Type | Potion |
|---|---|
| Name | Potion of blood |
| Icon | 
|
| A potion containing the essence of life. Vampires find it... vital. |
A potion of blood can be extracted from a monster corpse by a Vampire using the butcher (c) command. Most monsters yield one bottle of blood, but some larger monsters may yield two or three.
Quaffing a potion of blood as a Vampire will provide 1,000 nutrition. It does not provide any nutrition for any other species, nor have any other effects on them.
After roughly 2,000 turns have passed, a potion of blood will rot away. Its freshness depends on how quickly you bottle them (each turn since the monster was killed counts as 10 turns spent bottled). Each individual potion of blood has its own freshness and will rot away at its own interval, regardless if they are stacked together into one inventory slot.
Normally, players will only encounter potions of blood as loot on vampiric opponents. They do not spawn randomly in the dungeon like other potions. Potions of blood are automatically identified on sight.
Worshipers of Zin, Elyvilon, and the Shining One incur a piety loss if they knowingly drink this potion; followers of the Shining One also incur a penance.
Different species will display different messages upon quaffing a potion of blood, even if it has no other effect on them:
Vampires: "Yummy - fresh blood!"
Carnivores: "This tastes like blood."
Others: "Yuck - this tastes like blood"
History
Prior to 0.16, potions of blood could provide some nutrition to carnivore species, and could potentially cause Sickness in non-carnivores.
In 0.15, ghouls could restore a single point of rot by quaffing a potion of blood. This was removed in 0.16.
Prior to 0.14, potions of blood were capable of generating randomly, and would restore much more nutrition to vampires than to other species. Also, they were unidentified by default, but having one in your possession when it coagulated would identify both forms. As these potions were always red, it was generally easy to guess their identity anyway.
