List of Tier I and Tier II drugs. Tier II drugs can be both individually named drugs and classes of drugs (e.g., atypical antipsychotics).
Description
This image is Figure 1 in the article "Drug-Impaired Driving: The Contribution of Emerging and Undertested Drugs."
Tier I Drugs
- Cannabinoids
- Δ9-THC
- Carboxy-THC
- 11-hydroxy-THC
- CNS Stimulants
- Methamphetamine
- Amphetamine
- MDMA
- MDA
- Cocaine
- Benzoylecgonine
- CNS Depressants
- Carisoprodol
- Meprobamate
- Alprazolam
- Alpha-hydroxyalprazolam
- Clonazepam
- 7-Aminoclonazepam
- Lorazepam
- Diazepam
- Nordiazepam
- Oxazepam
- Temazepam
- Narcotic Analgesics
- Codeine
- 6-MAM
- Buprenorphine
- Fentanyl
- Hydrocodone
- Hydromorphone
- Methadone
- Morphine
- Oxycodone
- Oxymorphone
- Tramadol
- O-Desmethyltramadol
Tier II Drugs
- Cannabinoids
- Synthetic Cannabinoids
- CNS Stimulants
- Cathinones
- Methylphenidate
- Mitragynine
- CNS Depressants
- Atypical Antipsychotics
- Barbiturates
- Carbamazepine
- Chlordiazepoxide
- Chlorpheniramine
- Diphenhydramine
- Doxylamine
- Gabapentin
- GHB
- Hydroxyzine
- Lamotrigine
- Mairtazapine
- Novel Benzodiazepines
- Phenytoin
- Pregabalin
- Secobarbital
- Topiramate
- Trazadone
- Tricyclic Antidepressants
- Valproic Acid
- Zopiclone
- Narcotic Analgesics
- Fentanyl Analogs
- Novel Opioids
- Tapentadol
- Dissociative Drugs*
- Dextromethorphan
- Ketamine
- PCP
- Inhalants*
- Difluoroethane
- Inhalant Class
- Hallucinogens*
- Hallucinogens