Symptoms of deadly nightshade poisoning typically appear within 30 minutes to two hours of ingestion and can last for several days. Common symptoms include dry mouth, dilated pupils, blurred vision, fever, tachycardia, difficulty urinating, and confusion. In severe cases, it can cause hallucinations, convulsions, and coma. Due to these severe effects, deadly nightshade is considered one of the most poisonous plants.
