Casting poison on food or drink (containers) will poison it. Eating poisoned food/drinks will poison the person eating or drinking. A person who is poisoned will suffer damage every hour, lose constitution, and gain less points than usual. Casting more poison spells on a person is cumulative. Casting poison on an item makes that item poisonous. For weapons it means attack cause poison. For other items it means that melee attacks against the wearer can (1% per item) cause the attacker to get poisoned but the poison may also leak through and poison the wearer, too (10% when attacker is poisoned). Note: Don\'t forget that hp maximum is dependent on current constitution...

See also: remove poison, detect poison, resist poison, immune poison