Yes, you can get food poisoning from cooked potatoes. The most common type of food poisoning from potatoes is called solanine poisoning. Solanine is a naturally occurring toxin that is found in nightshade plants, like potatoes. When potatoes are cooked, the solanine is not destroyed, so it can still cause poisoning. Symptoms of solanine poisoning include nausea, vomiting, diarrhea, and abdominal pain. In severe cases, it can also cause paralysis and death. If you think you have solanine poisoning, you should see a doctor immediately.