Elderberries

This seemingly harmless sour fruit, which is used in jams, wines, and health goods, is actually packed with vitamins and antioxidants. The Elder tree was referred to as Hippocrates' "medicine chest" by the "Father of Medicine." However, eating uncooked or underripe berries might make you feel considerably worse and even result in death due to severe diarrhea, seizures, or even death. The Black Elder is the most prevalent variety of this deciduous shrub (Sambucus nigra). The tree, which may grow to a height of 30 feet, is native to Europe but is also commonly cultivated elsewhere in the world.

The elder also generates clusters of tiny white or cream-colored flowers known as elderflowers in addition to the dark berries. Unfortunately, the Black Elder contains potentially lethal amounts of a glycoside that produces cyanide in its seeds, stems, leaves, and roots. In severe situations, the poison inhibits the body's cells from utilizing oxygen, leading to the victim's major organs shutting down.