What is the worldwide prevalence of counterfeit drugs?
A. The extent of the problem of counterfeit drugs is unknown. Counterfeiting is difficult to detect, investigate, and quantify. For these reasons, it is hard to know or even estimate the true extent of the problem. What is known is that counterfeit drugs can be found worldwide and are more prevalent in developing countries. The World Health Organization (WHO) estimates that counterfeit drugs range from less than 1% in developed countries to over 30% in some developing countries.
