In the context of a fast changing and well documented market in legal highs, the case of khat (Catha edulis) provides an interesting anomaly. It is first of all a plant-based substance that undergoes minimal transformation or processing in the journey from farm to market. Secondly, khat has been consumed for hundreds if not thousands of years in the highlands of Eastern Africa and Southern Arabia. In European countries, khat use was first observed during the 1980s, but has only attracted wider attention in recent years.\ud \ud Discussions about appropriate regulatory systems and the implications of rising khat use for European drug policies4 should take cognizance of social, demographic and cultural trends, and compare the existing models of control that exist in Europe. Khat provides a unique example of a herbal stimulant that is defined as an ordinary vegetable in some countries and a controlled drug in others. It provides a rare opportunity to study the effectiveness, costs and benefits of diverse control regimes. As long as khat is legally produced and traded, it also allows for the views of stakeholders such as farmers and traders to be included in policy discussions.
