nicotine
bad
bottle
brain
care
chemical
concept
crime
criminal
danger
dangerous
dead
death
dose
drug
drugs
equipment
health
heroin
illness
inject
injection
laboratory
law
liquid
medical
medication
medicine
narcotic
narcotics
needle
nervous
overdose
pain
pharmacy
prescription
problem
risk
safety
science
security
substance
synthetic
syringe
system
unhealthy
vial