The use of scientific evidence to estimate the likelihood of adverse effects on the health of individuals or populations from exposure to hazardous materials and conditions
a drug that causes addiction, habituation, or a marked change in consciousness, has limited or no medical use, and is listed in schedule I of the US controlled substances act
a condition occurring with consistent use of one drug whereby a person needs more and more of the drug to produce the same effect
The taking up of a chemical into the body either orally, through inhalation or via skin exposure
a natural or manufactured substance that can cause severe illness or death if ingested, inhaled, or absorbed through the skin
law that established penalties for possession, use, or distribution of illegal drugs and established five schedules for classifying drugs
drug or other chemical compound whose manufacture, distribution, possession, and use are regulated by legal systems
a substance that decreases or inhibits the nervous system, reducing alertness
a substance affecting the nervous system by increasing alertness, attention, and energy, as well as elevating blood pressure, heart rate, and respiration
physical process associated with drug use whereby a person craves a drug; failure to take the drug can result in withdrawal symptoms
an addictive, sleep-inducing drug, often derived from opium, that acts as a central nervous system depressant and suppresses pain