Deadly nightshade berries pose the greatest danger to children, as they are attractive and are deceptively sweet at first bite. Yet just two berries can kill a child who eats them, and it takes only 10 or 20 to kill an adult. Likewise, consuming even a single leaf can prove fatal to humans.

What happens if you eat Belladonna?

Belladonna is LIKELY UNSAFE when taken by mouth. It contains chemicals that can be toxic. Side effects can include dry mouth, enlarged pupils, blurred vision, red dry skin, fever, fast heartbeat, inability to urinate or sweat, hallucinations, spasms, mental problems, convulsions, and coma.

How much belladonna is poisonous?

The berries are black, globular, sweet (Figure 1) and are consumed by animals that disperse the seeds in their droppings [2, 3]. It's a rare plant and dangerous: the ingestion of 10 bays would be toxic to an adult, 2-3 for a child.