Essential medicines and health products

How big is the problem of counterfeit medicines?

The true extent of the problem of counterfeit medicines is not really known.

Counterfeiting is an underworld activity. It is hard to detect and investigate. Moreover, countries and companies that detect the problem do not always report. So, it is hard to know or even estimate the true extent of the problem. What is known is that they occur worldwide and are more prevalent in developing countries.