Alstonia Congensis


NAME:  Alstonia congensis

FAMILY: Apocynaceae

COMMON NAMES: Stool wood, Alstonia, Cheese wood, Emien, Songati

LOCAL NAMES: Ahun, Egbu, Egbu-ora



  • The wood is used for little construction, light carpentry work e.g. crates, boxes etc.

  • It is also used in the production of household tools

  • The timber is also traded internationally



  • Nigeria

  • DR Congo

  • Angola

  • Central African Republic


Alstonia congensis medicinal values include:

  • Malaria

  • Astringent

  • Toothache

  • Malaria

  • Gonorrhea

  • Diarrhoea

  • Rheumatism

  • Anthelmintic

  • Leucorrhoea

  • Ulcers

  • Scabies

  • Headache


  • Ornamental purpose

  • Shade tree


  • Alstonia congensis is a tall forest tree about 25-30 m high, the stem is cylindrical and it has a rough bark.



Akinnawo, O. O., Anyasor, G. N., & Osilesi, O. (2017). Aqueous fraction of Alstonia boonei de Wild leaves suppressed inflammatory responses in carrageenan and formaldehyde induced arthritic rats. Biomedicine and Pharmacotherapy, 86, 95–101.

Al-Henhena, N., Ying, R. P. Y., Ismail, S., Najm, W., Khalifa, S. A. M., El-Seedi, H., & Abdulla, M. A. (2014). Chemopreventive efficacy of Andrographis paniculata on azoxymethane-induced aberrant colon crypt foci in vivo. PLoS ONE, 9(11).

Bagheri, G., Mirzaei, M., Mehrabi, R., & Sharifi-Rad, J. (2016). Cytotoxic and antioxidant activities of alstonia scholaris, alstonia venenata and moringa oleifera plants from India. Jundishapur Journal of Natural Pharmaceutical Products, 11(3).

Chime S.A, Ugwuoke E.C, Onyishi I.V, Brown S.A, O. G. . (2013). and Evaluation of Alstonia boonei Stem Bark Powder Tablets. Indian Journal Pharmaceutics Science, 2(April), 226–230.

Khyade, M. S., Kasote, D. M., & Vaikos, N. P. (2014). Alstonia scholaris (L.) R. Br. and Alstonia macrophylla Wall. ex G. Don: A comparative review on traditional uses, phytochemistry and pharmacology. Journal of Ethnopharmacology.

Li, C. J., Chen, S., Sun, C., Zhang, L., Shi, X., & Wu, S. J. (2017). Cytotoxic monoterpenoid indole alkaloids from Alstonia yunnanensis Diels. Fitoterapia, 117, 79–83.

Omoregie, E., Oriakhi, K., Oikeh, E., Okugbo, O., & Akpobire, D. (2014). Comparative study of phenolic content and antioxidant activity of leaf extracts of Alstonia boonei and Eupatorium odoratum. Nigerian Journal of Basic and Applied Science, 22(3&4), 91–97.

Pan, L., Terrazas, C., Acuña, U. M., Ninh, T. N., Chai, H., Carcache de Blanco, E. J., … Kinghorn, A. D. (2014). Bioactive indole alkaloids isolated from Alstonia angustifolia. Phytochemistry Letters, 10, liv–lix.

Ragasa, C. Y., Lim, K. F., Shen, C. C., & Raga, D. D. (2015). Hypoglycemic Potential of Triterpenes from Alstonia scholaris. Pharmaceutical Chemistry Journal, 49(1), 30–33.

Thomas, S. K., Kunjumon, M., George, R. E., & Iyer, T. V. (2015). A COMPARATIVE STUDY OF ANTIFUNGAL ACTIVITY OF ALSTONIA VENENATA R. BR. International Journal of Pharmaceutical Sciences and Research IJPSR, 6(4), 1741–1745.