| Substance | Cases | % | Substance | Cases | % |
| Antidepressants | 120 | 12.4 | Nutrient supplements | 12 | 1.2 |
| Opioid analgesics | 93 | 9.6 | Cocaine | 11 | 1.1 |
| Anti-anxiolytics | 89 | 9.2 | Antihistamine | 8 | 0.8 |
| Household chemicals-other | 82 | 8.5 | Unknown substance | 8 | 0.8 |
| Anti-psychotic | 80 | 8.3 | Cough suppressors | 7 | 0.7 |
| NSAID | 64 | 6.6 | Diuretic | 7 | 0.7 |
| Cardiovascular agent | 60 | 6.2 | Barbiturate | 6 | 0.6 |
| Anticonvulsants | 58 | 6.0 | Antibiotic | 6 | 0.6 |
| Alcohol | 53 | 5.5 | Anti-cholesterol | 5 | 0.5 |
| Sedative-hypnotic | 36 | 3.7 | Bronchodilators | 4 | 0.4 |
| Muscle relaxants | 31 | 3.2 | Antidote | 3 | 0.3 |
| Household chemicals-cleaning | 30 | 3.1 | Antiseptic | 3 | 0.3 |
| Animal bite/sting | 30 | 3.1 | Other illicit drug | 3 | 0.3 |
| Pesticides | 19 | 2.0 | Proton pump inhibitors | 3 | 0.3 |
| Diabetic agents | 14 | 1.4 | Thyroid drugs | 3 | 0.3 |