In 2010, one study11 found caffeine, analgesics, antimalaria, antibiotics, hypnosedatives, alcohol, tobacco, glues/organic solvents, cannabis, heroin, cocaine as the drugs abused.

In 2011 one study, the review by Pike12 stated that cocaine was identified by Nigeria Drug Law Enforcement Agency (NDLEA) Report as one of the drugs abused. In 2012, the under-listed three studies identified the indicated drugs as abused by secondary school students in Nigeria.

1. Nwagu's13 survey of the types of drugs commonly abused by secondary school students in government secondary schools in Igboetiti Local Government Area of Enugu State, identified Beer, Palm wine, Indian hemp and Glue as the drugs abused.

2. Ekpenyong14, in his survey of drug abuse in selected secondary institutions in Bayelsa State, South-South Nigeria, identified alcohol, cigarettes, miraa and bhang as the abused drugs abused.

3. Fareo15, in her review of the National Agency for Food and Drug Administration and Control (NAFDAC) Reports, found that the following classes of drugs were being abused:

a. Stimulants;

b. Hallucinogens;

c. Narcotics;

d. Sedatives;

e. Tranquilizers; and

f. Miscellaneous substances, such as glues, spot removers, tube repair, perfumes and chemicals.

In 2013, one study16 found analgesics, cannabis, tobacco, alcohol and sedatives to be among the drugs abused by secondary school students in Nigeria. In 2014, one study17 in Lagos, found analgesics, cannabis, tobacco, alcohol and sedatives to be among the drugs abused by secondary school students in Nigeria. In 2015, the underlisted two studies identified the indicated drugs as abused by secondary school students in Nigeria.

1. Erumi10, in her empirical survey of the prevalence of non-medical drug use among adolescents and young adults in Warri metropolis, identified alcohol and energy drinks to be among the drugs abused.

2. Dumbili18, in his literature review research found alcohol as one of the substances abused.

In 2016, the under-listed three studies identified the indicated drugs as abused.

1. Obiechina and Isiguzo2, in their literature review research, found that the following classes of drugs were being abused:

a. Nicotine, found in tar, cigars, cigarettes, tobacco and traditional snuff, is the mostly abused;

This study suggests, without any empirical evidence, that rohypnol, known as ‘roofies' is generally abused by

b. students of secondary and higher institutions in Nigeria;

c. Codeine syrup, which is usually mixed with soft drinks or garri soaked in water;

d. Stimulants such as caffeine, cocaine, nicotine and amphetamine;

e. Narcotics such as heroin, opium, morphine, tramadol, cannabis also known as pot, marijuana, hashish and bhang;

f. Depressants such as alcohol, barbiturates, tranquilizers and rohypnol;

g. Hallucinogens such as Lysergic acid diethylamide (LSD);

h. Inhalants, among which are volatile organic solvents (derived from industrial or household solvent products like paint, thinners, dry cleaning fluid spray lubricants, gasoline, kerosene, nail polish or remover, furniture polish and wax, fuel, gases, nitrites and anesthetic gases (chloroform, nitrous oxide and ether), commercial solvents like gasoline, kerosene, glue, and typewriter correction fluid among others) and household or commercial gasses and propellants like butane lighters, propane, hair and deodorant sprays, room deodorizer sprays, refrigerants sprays, ether, chloroform and halothane; and

i. Aphrodisiacs

2. Anyanwu, Ibekwe and Ojinnaka19 in their cross-sectional survey that employed the WHO Student Drug Use Questionnaire to study the pattern of substance abuse among adolescent secondary school students in Abakaliki found alcohol, Kolanut, Coffee, Cigarettes, Cannabis and Cocaine to be some of the drugs abused

3. Manyike, Chinawa, Chinawa, Obu, Nwokocha and Odetunde20, in their cross-sectional survey that utilised the WHO Student Drug Use Questionnaire to study the correlates of psycho-active substance use among boarding secondary school adolescents in Enugu, South East Nigeria, identified Kolanut, Alcohol, Coffee, Tobacco, Tranquillizers and Cannabis to be among the drugs abused.

In 2017, one study21 found alcohol and hot drinks, tobacco, Indian hemp or marijuana to be among the drugs abused.

In 2018, the under-listed two studies identified the indicated drugs as abused by secondary school students in Nigeria.

1. Idowu, Aremu, Olumide and Ogunlaja22, in their study, identified caffeine, cigarettes, cocaine, tramadol, heroin and cannabis to be among the drugs abused.

2. Amadi and Akpelu23, in their descriptive survey, identified alcohol, hot drinks, tobacco, Indian hemp, marijuana to be among the drugs abused.

In 2019, one study24 discovered that Cigarettes, Marijuana, Alcoholic beverages, Cocaine were among the drugs abused.

In 2020, one study6, a cross-sectional survey of factors associated with psychoactive substance use among inschool adolescents in Zaria Local Government Area, Kaduna State, Nigeria, discovered kolanut, sedatives, alcohol and tobacco to be among the drugs abused.

Table 1 show that 16 different types of drugs were empirically identified as being abused by secondary school students studied in 9 of the 36 states in Nigeria.

Table 2 shows the trend of the types of drug abused by secondary school students in Nigeria. The table shows alcohol and alcoholic beverages were the most researched drug that could be abused by secondary school students.