African potato
This is Southern Africa’s most popular medicinal plants used for a wide range of traditional medical treatments. It has since been offered as a treatment for diabetes. A research by Mahomed I.M and Ojewole J.A that used diabetic rats showed that African Potato at a dose of 800mg/kg of the extract caused 30.2 per cent and 48.54 per cent reduction in the blood glucose concentrations of fasted normal and streptozotocin-treated, diabetic rats.