The health care system in African countries is widely based on the natural world of herbs and medicinal plants. A vast traditional knowledge that has been accumulated for centuries are transmitted through generations. Southern Africa is reputed to be the store house of 10 percent of the world's plant species. But knowledge about them unearthed or substantiated with scientific research has been few. Fewer have been commercialized. But initiatives in research, publication of their results and application for patents have seen an increase in recent years.