**Author details**

Stella O. Bruce1 \* and Felix A. Onyegbule2

1 Pharmacognosy and Traditional Medicine, Pharmaceutical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria

2 Department of Pharmaceutical & Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria

\*Address all correspondence to: stellaobruce@yahoo.com

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
