[Counterfeit drugs in Israel and worldwide. Part I: the extent of occurrence and impending threats].

A counterfeit drug is one which is deliberately and fraudulently mislabeled with respect to identity and/or source. Counterfeit drugs can be found worldwide, both in deveLoped and developing countries, and their dissemination is a major threat to public health and safety, and has major economic effects on the consumers, the pharmaceutical industry, and society at Large. One of the first measures in confronting this problem is bringing it to the awareness of medical staff and public. This review aims to describe the extent of the problem, to discuss its negative effect, and to present actual and possible consequences.