Why does RSSB reimburse generic medicines only?

As other Health Insurances around the World, RSSB Medical Insurance uses a list of reimbursable medicines to ensure access of medicines to its members. That list is based on National Formulary which is a list of medicines registered in the country including Essential medicines used in public health facilities and other medicines available in the country.
The list of medicines reimbursable includes a notion of rational use and safety of medicines. It is based on consensus between stakeholders and updated every year in a meeting between RSSB, MINISANTE and partners representatives in the medical and pharmaceutical field.
Medicines reimbursed are not only generics, the list consists of 1895 items and generics reimbursed instead of equivalents brands medicines are 212 only that represent 11%