Badberry

Up to ten berries, identical to those created by the goodberry spell, appear in your hand and are infused with magic for the duration. A creature can use its action to eat one berry. Eating a berry causes the creature to take 2d6 poison damage, and the creature must pass a Constitution saving throw or be poisoned for 1 minute. The berry provides nourishment and fill the person for enough water and food for a whole day, but has a pleasant taste not unlike that of a raspberry. Also gives dysentery for 1 week or tell a spell that cures  disease

The berries lose their potency if they have not been consumed within 24 hours of the casting of this spell.