**13.8. Herbal mixtures containing** *Alstonia congensis* **Engler bark and** *Xylopia aethiopica* **fruits (Dunal) A. Rich**

In Africa and other parts of the world, herbal medications are prepared mostly from a combination of two or more plant parts which contain many active constituents with multiple physiological activities and could be used in the treatment of various health conditions [72] and possibly to reduce toxicity. The herbal formulation prepared with *A. congensis* bark and *X. aethiopica* fruits in equal proportion is a popular local herbal product taken over a long time for the treatment of diabetes.
