Substance use has become a major public health problem in most nations of the world and can be observed in different forms and displays all around the world (Owoaje & Bello, 2010). The United Nations Office for Drugs Control and Prevention estimated that some 200 million people or 5% of the world’s population aged 15-64 have used drugs at least once in the last 12months (UNODC, 2006). For most of Europe and Asian countries, opiates continue to be the main problem drug accounting for 62% of all treatment demand. In South America, drug related treatment continues to be mainly linked to the use of cocaine [59% of all treatment demand]. In Africa, the bulk of all treatment demand is linked to cannabis [64%] (WHO, 2004). Report from various studies has revealed increasing trend in psychoactive substance use and abuse in many African countries (Chawla, 1988; Adelekan, 1991; Adelekan & Stimson, 1997; Adelekan et al, 2000). In societies like Nigeria where substance abuse was uncommon several years ago, there are today ample visual evidence of it on roadside corridors and motor parks of most urban centers where young adults gather on daily basis to smoke marijuana (Rasheed & Ismaila, 2010). Industrialization, urbanization and increased exposure to western life style has been noted to contribute to the increasing trend of substance use in Nigeria with alcohol and cigarette acting as gateway drugs to the use of other substances like cocaine, heroin, amphetamine, inhalants and hallucinogens (Abiodun et al, 1994). Youths have been identified as a high risk group for the use of psychoactive substances. The use of these substances not only poses a threat to the health of youths but also has adverse social effects on families, communities and nations (Owoaje & Bello; UNDOC, 2004).