Prespra

Prespa, also known as "Mother's Bane", was an ingested poison that was only effective against humans.

Description
Prespa was colorless and odorless. It mixed easily with any drinkable liquid except for milk or other dairy products.

Effects
Prespa caused dizziness and vision impairment when drunk. It also led to blotchy, red patches on the surface of the skin as blood vessels burst and caused damage to the imbiber. This affect was aggravated by further bodily damage.