This study investigated alcoholism and drug abuse in Nigeria, focusing on its prevalence, determinants, health and social consequences, effects on productivity, education, and counselling intervention strategies. A descriptive survey research design was adopted, and data collected from 600 respondents using a structured questionnaire. Data were analyzed using frequencies, percentages, mean scores, standard deviations, correlation, and t-test statistics. The findings revealed that alcoholism and drug abuse were highly prevalent, with 69.0% respondents. Easy access to drugs

(Mean = 3.71) and peer influence (Mean = 3.65) emerged as the major determinants of substance

abuse. The study further showed that addiction and dependence (Mean =3.82), mental illness (Mean =

3.67), and liver disease (Mean -3.62) were significant health consequences. Crime and criminality

(Mean = 3.68) ranked highest among the social consequences. Substance abuse was also found to

impair concentration (Mean – 3.69), reduce academic performance (Mean – 3.6l), and decrease

workplace productivity (Mean – 3.55). Public enlightenment campaigns (Mean = 3.74) and

individual counselling (Mean – 3.70) were identified as effective intervention strategies. Hypotheses testing revealed significant relationships among the variables studied (p < 0.05). The study recommended that Government should launch comprehensive preventive, counselling, and rehabilitation programmes to address substance abuse in Nigeria.

Keywords: Alcoholism, Drug Abuse, Substance Abuse, Counselling Interventions, Public Health.