a connection between neurons in the brain

use of toxicology, analytical chemistry, pharmacology and clinical chemistry to aid a medical or legal investigation of death, poisoning, and drug use/misuse

a chemical that is found in the spaces between neurons

physical dependence

neurotransmitter that controls reward/pleasure centers

neurotransmitter that stabilizes mood

neurotransmitter that plays role in pain, depression, appetite, memory, and fertility; name means "bliss"

neurotransmitter that reduces perception of pain and triggers a positive feeling in the body

neurotransmitter that inhibits nerve transmission to produce a calming effect

a natural or synthetic substance used to produce physiological or psychological effects

a drug that relieves pain

opioid-based drug used to reduce severe pain

psychoactive drugs that alter the brain's ability to function normally

drugs derived from the Cannabis sativa plant

drugs that depress the activity of the central nervous system, reducing anxiety but impairing memory and judgment

substances taken to increase alertness or activity, followed by a decrease in fatigue and a loss of appetite

growth hormone found in plants; OTC pain reliever

a non-steroidal anti-inflammatory drug that can be purchased without a prescription

an analgesic and antipyretic

fever-reducing

prevents blood-clotting

reduces the size of blood vessels

Substances whose fumes are sniffed or inhaled to give effect

drugs that reduce sensitivity to pain and produce feelings of detachment and dissociation

accumulation of toxins like lead, mercury, arsenic, or cadmium in the soft tissues of the body