Introduction
During the past 20 years, there has been a substantial increase in the prevalence and consequences of the use of drugs that are liable to abuse. This is a global scenario threatening the communities mainly in North America, Europe, Asia and the West Pacific, Africa, and South America. Bangladesh is not an exception to this situation. Bangladesh is surrounded by drugs producing and trafficking countries, the availability and consequently abuse of drugs has become a great threat to our society and the nation as a whole.