The root of the grapevine, called Podogeun (grape root, 포도근), is also used as an herbal medicine. It was primarily utilized to stop nausea and hiccups, and it was also widely used as a diuretic.
However, the Donguibogam adds a caution when discussing grapes, stating that eating too much can cause blurred vision. This appears to be because grapes are a fruit high in sugar, and excessive consumption could potentially lead to the onset of diabetes.
