- GF
- A miss
- Abscess
- Abstinence
- Acamprosate
- Acid
- Acquired Immunodeficiency Syndrome (AIDS)
- Addiction
- Agonist
- Alcohol (ethanol)
- Alcohol pad
- Alcoholic
- Alcoholic cirrhosis
- Alcoholic dementia
- Alcoholism
- Aluminum Foil
- Amyl Nitrite
- Analgesic
- Antabuse
- Antiretroviral (ARV)
- Barbiturate
- Benzodiazepine
- Biohazard containers
- Bleach
- Bottle Caps
- Buprenorphine
- Buprenorphine Maintenance Treatment
- Burnout
- Cannabis
- Cannabis intoxication
- CD4 T Lymphocyte Synonym(s): CD4 Cell, Helper T Cell
- Chasing the dragon
- Chemsex
- Co-infection
- Cocaine
- Collapsed Vein
- Community
- Community-based outreach programs
- Comorbidity
- Consumption rooms
- Cooker
- Cotton
- Counselling
- Crack or "rock"
- Cytomegalovirus (CMV)
- Decriminalization
- Delirium
- Demand Reduction
- Dependence syndrome
- Dependency drug or alcohol
- Depressant
- Depression
- Detoxification
- Disability (alcohol- or drug-related)
- Drop-in centre
- Drug consumption rooms
- Drug-related harms
- Drug Substitution
- Drug use
- Dual diagnosis
- Early intervention
- Encephalopathy
- Endocarditis
- Epidemic
- Epidemiology
- Evaluation
- Experimental use
- False Negative
- False Positive
- Fentanyl
- Fetal Alcohol Syndrome
- Freebasing
- Golden Triangle
- Hallucinogen
- Harm reduction
- Harmful use
- Hashish
- Hepatitis
- Hepatitis B Virus Infection (HBV)
- Hepatitis C Virus Infection (HCV)
- Heroin
- Heroin-assisted treatment
- HIV
- Illicit drug
- Incidence
- Incubation Period
- Indirect Sharing
- Injecting drug use
- Internal condom (female condom)
- Intramuscular (IM)
- Intranasal
- Intravenous (IV)
- Legalization
- Lemon juice
- Living with HIV
- Lysergic acid diethylamide (LSD)
- Maintenance therapy
- Marijuana:
- Medication Assisted Treatment (MAT)
- Mescaline
- Methadone
- Methadone Maintenance Treatment (MMT)
- Mixed-status couple
- Monitoring
- Multiple drug use disorder
- Multiple (poly) drug use
- Naloxone
- Naltrexone
- Navigator
- Needle and Syringe Program (NSP)
- Needle sharing
- Neuroadaptation
- Opiate
- Opioid
- Opioid withdrawal
- Opium
- Outreach
- Overdose
- Overdose prevention
- Oxycodone
- Peer Education Program
- Peer Mentoring
- Phencyclidine (PCP)
- Pipe
- Pneumocystis Jirovecii Pneumonia
- Policy Action
- Popping
- Post-Exposure Prophylaxis (PEP)
- Prevention
- Problematic use
- Psilocybin
- Psychoactive drug or substance
- PWID
- PWUD
- Rapid Situation Assessments
- Rapid Test
- Rehabilitation
- Relapse
- Relapse prevention
- Rig/Point
- Risk behavior reduction
- Rolling Papers
- NSP
- Second-line treatment
- Sedative/hypnotic
- Self-Administered Therapy (SAT)
- Self-help group
- Self-testing
- Serotonin uptake inhibitor
- Sex worker
- Sexually transmitted infection (STI)
- Sexually transmitted infection (STI)
- Sharing of Injecting Equipment
- Snorting
- Speedball
- Spoons
- Stigma
- Stimulant
- Stimulants
- Straw
- Sublingual
- Substance abuse
- Substance Use
- Substance Use Disorder (SUD)
- Substitution or replacement therapy
- Supervised Injection Site
- Supply reduction
- Syphilis
- THC Tetrahydrocannabinol.
- Therapeutic community
- Third-line treatment
- Transdermal
- Tuberculosis (TB)
- Undetectable Viral Load / virally suppressed
- Urinalysis
- Vaccination Synonym(s): Immunization
- Vint or perventin
- Viral Load Test
- Vivitrol
- volatile substances
- Withdrawal, conditioned
