Nowadays, more than 80% of the world population is depending on medicinal plants based medicines to satisfy their healthcare needs. Medicinal plants have served as valuable starting materials for drug development. The general objective of the present work was to exploit the strong experience, developed since the antiquity on medicinal plants uses in Cameroon, for their future valorization by the scientific community. The accustomed medicinal plants are species known by traditional healers for the treatment of given diseases. The species which successfully treats or relieved patients are known to be convinced medicinal plants. Those known as suspected medicinal plants are plants used to treat diseases indirectly from their signs, their symptoms or their complications.