Potatoes - Potato plant poisoning occurs when someone eats the green tubers or new sprouts of the potato plant. Solanine is a dangerous nerve toxin that is produced in any green part of the potato, that includes leaves, stems, and any green part of the potato.
Ackee - Ackee is a tropical fruit native to West Africa and is the national fruit of Jamaica where it is also known for its toxin content named hypoglycin A and hypoglycin B. Hypoglycin A is found in both the seeds and the arils, while hypoglycin B is found only in the seeds. These toxin compounds are responsible for causing Ackee Fruit Toxicity or Jamaican Vomiting Sickness. Bitter Almonds -Sweet almonds may be safe to eat, but bitter almonds aren't. Bitter almonds are wild almonds and contain 50 times more cyanide per kilogram than sweet almonds, according to the 2013 study in ISRN Toxicology. Eating 50 bitter almonds can be deadly. If you've been exposed to a small amount of cyanide, you may experience dizziness, headaches, nausea, vomiting, rapid breathing and rapid heart rate.
Rhubarb Leaves - Rhubarb leaves contain a poison, oxalic acid which is very harmful for any human body. Its stalks are only the eatable part which is used in many desserts or as an ingredients in many sweet dishes. If you consume its leaves then you may feel burning sensation in your mouth and throat, as well as difficulty breathing.