Watching someone in pain can make you winder and most people consider peppers as a magical food that wouldn’t impact their well-being. But in some cases the very nature of a nightshade can cause you pain or discomfort. Solanine a glycoalkaloid poison is found in species of the nightshades such as the potato tomato and the eggplant. Symptoms of poisoning occur 8-12 hours after ingestion, but may occur as rapidly as 30 minutes after eating high-solanine foods. Proceed with caution when eating too much of any food.