Claims about drug abuse in Nigeria often circulate without sources — inflated for shock value, understated for political reasons, or simply outdated. This article summarises what the available research actually shows: the methodology, the limitations, and the most defensible conclusions.
ALTDAP is built on this evidence base. Every intervention on the platform traces back to findings like these.
The Primary Data Sources
NDLEA National Drug Use Survey
The National Drug Law Enforcement Agency conducted Nigeria's most comprehensive national household survey on drug use in 2018, in partnership with the United Nations Office on Drugs and Crime (UNODC). This survey covered approximately 10,000 households across all 36 states and the FCT.
Key methodological note: The survey used a household sampling approach, which typically underestimates drug use because:
- Respondents self-report in a context where drug use is criminalised
- The homeless, incarcerated, and institutionalised populations are excluded
- Families may underreport to protect members
The figures below should therefore be understood as lower bounds.
NDLEA Annual Reports
NDLEA publishes annual seizure statistics, arrest data, and rehabilitation centre intake figures. These are operational records, not epidemiological surveys — they capture what law enforcement encounters, not the full population of users.
Academic Research
Nigerian universities and the FUTO-affiliated drug awareness research programme have produced peer-reviewed analyses of drug use in specific populations (university students, secondary school students, motor parks). These studies typically use smaller samples but are more methodologically rigorous.
What the Data Shows
Prevalence
The 2018 NDLEA/UNODC survey found that approximately 14.4 million Nigerians had used a psychoactive substance (excluding tobacco and alcohol) in the past year. This represents roughly 14.4% of the adult population aged 15–64 — higher than the global average of 5.6% and among the highest rates on the African continent.
Updated NDLEA reporting in 2022 placed the figure at a similar level, suggesting that the trend has not reversed despite enforcement activity.
Age demographics
The 15–35 age group accounts for the majority of substance users in Nigeria across all survey periods. This is consistent with global patterns: substance use disorders most commonly begin during adolescence and early adulthood, when the brain's prefrontal cortex — which governs impulse control and risk assessment — is still developing.
Secondary school students (ages 12–18) represent a priority concern. The 2018 survey found that 1 in 5 students in some states had used a non-prescribed psychoactive substance in the past year.
Geographic patterns
Substance use and drug-related crime are not uniformly distributed. The Southeast and South-South geopolitical zones show elevated rates of Mkpuru Mmiri (crystal methamphetamine) use. The Northwest and Northeast show higher rates of tramadol misuse. Codeine cough syrup consumption was historically concentrated in the North, though production restrictions have shifted some demand patterns.
This does not mean any region is "safe." Urban centres across all zones show elevated prevalence compared to rural areas.
Substances in use
Based on NDLEA data and corroborating academic research, the most commonly misused substances in Nigeria are:
-
Cannabis (Indian hemp) — Most widespread. Used across demographic groups. While often dismissed as low-risk, high-potency strains available in Nigeria are associated with psychosis risk, particularly in adolescent users.
-
Tramadol (high-dose non-prescribed) — Explosive growth from approximately 2015 onward, coinciding with the proliferation of illicitly manufactured tablets at 200–225mg doses. Now among the most reported substances in NDLEA rehabilitation intakes.
-
Codeine cough syrup — Peaked around 2017–2018 (3 million bottles per day estimated in the North alone by that NDLEA report). Production restrictions reduced availability but did not eliminate the market; demand partly shifted to tramadol.
-
Methamphetamine (Mkpuru Mmiri) — Emerged as a major substance of concern from approximately 2019. NDLEA seizure data show substantial increases year-on-year. Southeast Nigeria is the primary affected region.
-
Heroin / other opioids — Smaller but documented user population, concentrated in Lagos and Port Harcourt.
The Research on Effective Interventions
Prevention research, not just prevalence data, is the foundation for ALTDAP's design.
What works
Accurate information delivery is among the most evidence-backed prevention approaches. Studies in Nigeria and comparable contexts consistently show that young people who receive specific, accurate information about what substances do — rather than exaggerated or moralistic messaging — make different decisions.
Social norms correction is effective where drug use is normalised by peer perception. In many student environments, perceived rates of drug use are substantially higher than actual rates. Correcting this misperception reduces initiation.
Early identification and intervention — catching problem use before dependency is established — dramatically improves treatment outcomes. A person who receives support after one year of use has far better prospects than someone who has been dependent for five years.
What doesn't work
Fear-based campaigns without factual grounding have poor outcomes in Nigerian contexts. Young people are sophisticated media consumers and recognise exaggeration. When one claim is visibly overstated, the entire message loses credibility.
Enforcement without treatment infrastructure — arrests reduce individual users' access temporarily but do not address the demand side or help users who want to stop.
Stigma-based approaches increase barriers to seeking help. Users who fear social consequences, family shame, or legal repercussions are less likely to seek treatment before dependency is severe.
Limitations of Current Research
Researchers and policymakers working with Nigerian drug use data should note several limitations:
- Self-report bias — all household surveys underestimate prevalence due to social desirability and legal risk of disclosure
- Geographic gaps — rural areas, particularly in the North East, are underrepresented due to security constraints on data collection
- Lag time — major surveys are conducted infrequently; the 2018 survey remains the most comprehensive, but substance use patterns have shifted since then
- Substance-specific gaps — relatively little data exists on prescription drug diversion (benzodiazepines, opioid analgesics) and new psychoactive substances entering the market
Better data would produce better interventions. ALTDAP's research component is designed to generate ongoing, accessible data on knowledge, attitudes, and behaviour among Nigerian youth — contributing to this evidence base over time.
Using This Research
This article presents a summary. Researchers, journalists, and policymakers who want primary sources should consult:
- NDLEA annual reports (available through the NDLEA website)
- UNODC World Drug Report (global data, with Nigeria-specific figures)
- Published academic research through Nigerian university journals and international databases (PubMed, Google Scholar using terms "drug use Nigeria," "substance abuse Nigeria")
ALTDAP is an educational platform, not a primary research institution — but the platform is grounded in this evidence base and its design reflects what the research shows about effective prevention.
What This Means for Students and Communities
The headline figure — 14.4 million Nigerians affected — represents someone's child, sibling, student, or friend. The research is not abstract.
The same research that shows the scale of the problem also shows that awareness, early intervention, and accurate information genuinely reduce harm. That is the premise this platform is built on.
→ Take the Awareness Challenge — Free, Anonymous
→ Read about the three substances most affecting Nigerian youth