Poison

Poison is a status effect in Demon's Souls.

General information
Poison will cause damage over time after being contracted, generally more than Bleed but less than Plague. A player or NPC afflicted with poison will emit a gassy hissing sound and be covered in purple fog. Poison reduces the effectiveness of healing items.

Utilization
The following is a list of items, magic and weapons that can inflict Poison.
 * Mercury weapons
 * Poison Cloud
 * Kunai
 * Rotten Arrow

Curing

 * Royal Lotus
 * Antidote
 * Cure
 * With moderately high Vitality (~30), it is possible to survive many sources of poison without needing to interfere, assuming no other damage is taken.