See Drug Abuse
A solvent that is sometimes used in the production of methamphetamine and other drugs.  It is regulated by the Chemical Diversion and Trafficking Act of 1988.
A person who is physiologically or psychologically habituated to a drug.
Occurs when there is psychological or physiological dependence upon a drug.	
The effect of two drugs taken in combination that is greater than the effect of one drug taken alone.
An active substance that acts in concert with a drug or has the ability to produce a reaction on the body by itself. It increases the volume and gives a false purity to drugs.
An organic base that occurs in seed plants that causes most of the psychological effects of drugs.
Term used for a number of analog substances that are commonly referred to by letter abbreviations such as MDMA, MDE, SPT, DOB and others.
Pattern of behavior usually associated with frequent marijuana use. It is marked by apathy, lack of concern for the future and loss of motivation that extends beyond the period of intoxication.
A name given to a class of central nervous system stimulants including amphetamines, methamphetamines, and dextroamphetamines. They are prescribed for a number of medical disorders; however, they are often produced in illicit laboratories for illegal use.
A substance that is used to treat coronary heart disease, but is often abused as an inhalant.
A group of synthetic hormones that increase the constructive metabolism, and are sometimes taken by athletes in training to increase muscle mass and strength.
Any drug which provides a stimulatory effect, such as  nicotine, caffeine, cocaine, and amphetamine.
Any substance taken internally to relieve or lessen pain.
A synthetic that is produced by making small chemical changes in a parent drug.  Also called "designer drugs".
A drug which will cause the development of masculine features. Anabolic steroids are in this class of drugs.
A drug that eliminates the sensation of pain.
Opposite effects produced by different drugs.
A drug used to elevate mood and relieve some types of mental depression.
A drug that blocks the effect of the allergy chemical histamine and relieves some symptoms of allergic reactions.
Blood that appears in a syringe when the plunger is pulled back. Indicates a vein has been penetrated.
Sedative-hypnotic drug derived from barbituric acid and used to calm nerves and induce sleep.
Intermediate product in the process of refining cocaine.
Local anesthetic sometimes used as an adulterant in drugs.
Class of drugs used to control stress and anxiety.
A substance that can prevent a drug from entering the urine.  Can be used to prevent a positive urine test.
Cigar which has had a portion of the tobacco replaced with marijuana. When smoked, the tobacco masks the marijuana odor.
A person who smuggles drugs by concealing it on their body or on their clothing.
A person who smuggles drugs by swallowing balloons, condoms, or other small containers that contain drugs.
A pipe used to smoke marijuana. It has a water chamber that the smoke passes through that removes irritants and cools the smoke for deeper inhalation.
Grinding of the teeth. Can be symptom of cocaine or amphetamine use.
Cluster of flowers on a marijuana plant.
Chemical sold in head shops and other locations, frequently disguised as air freshener.  When inhaled, it causes a brief but powerful rush.
Bitter tasting odorless compound extracted from the coffee plant. It is a widely used central nervous system stimulant.
Chemical compound found only in cannabis products.
Any substance derived from the cannabis sativa plant.
Consists of the brain, brain stem, and spinal cord.
Something that is conducted in secrecy.
Powerful central nervous system stimulant extracted from the leaves of the coca plant.
An alkaloid constituent of opium used to relieve mild to moderate pain, and to control coughing and diarrhea.
Process of suddenly quitting the use of a drug. In some instances, depending on the user and substance, this can be life threatening.
A condition caused by repeated injections into vein, often associated with illicit drug users.
A drug or other substance that is regulated under the Controlled Substances Act.
(CSA) A part of Title 21 USC 800 of the U.S. Criminal Code. It is a compilation of a number of separate laws designed to fight illegal drug use.  It regulates the manufacture and distribution of all legal and illegal drugs.
Used by drug abusers who believe it will filter the impurities from a liquid drug when it is being drawn into a syringe. These cottons are often collected and later soaked in water to obtain the residue of the drug left.
Street name given to a rock or chunk form of cocaine.
Period of mental depression occurring when a person stops taking a central nervous system stimulant.
An overwhelming desire to use a drug.
Condition when a person is dependent upon one drug that is chemically similar to the drug being used.
Tolerance to one drug will result in tolerance to chemically similar drugs.
The process of alternating steroid use over a period of weeks to maximize the effects and minimize the side effects.
A broad group of drugs which, by depressing the central nervous system, slow down body function. Some of these relieve pain (narcotics) and some induce relaxation and sleep (sedative-hypnotics).
See analog.
An inactive or inert substance that does nothing but increase the volume when added to a drug.
Drug that helps the body excrete excess fluids.
Quantity or amount of drug taken at any one time.
Any substance that will cause a physical or psychological change to a living organism when it enters the body.
Using a drug in a manner that was not intended or prescribed, or using a harmful or illegal substance that has no medical use.
Any natural, internal body chemical that has opioid-like activity.
Primary chemical used in the illegal manufacture of methamphetamines. It is regulated under the Chemical Diversion and Trafficking Act of 1988.
Chemical that is used as a solvent, regent, or catalyst in the manufacturing of a controlled substance.
An extreme sense of well-being and optimism.
The feeling or state of being extremely cheerful.
Short, intense, generalized sensation of total well-being experienced after intravenous injection of cocaine or methamphetamine. Can also occur when a drug is snorted.
Undesirable recurrence of a drug's effects without recent drug consumption to explain changes in consciousness and experience of illusion and hallucinations.
Drug product given an official or nonproprietary name, one that is not patented, trademarked, or owned by a private individual or company.
Enlargement of the mammary glands in males that can sometimes occur with steroid use.
A sensory perception that does not exist.
A drug substance that produces or induces hallucinations in the drug user.
A cannabis plant that is low in THC is harvested for fiber or seed.
A semi-synthetic opiate that is processed from morphine.
The desired pleasurable effects of drug use.
Spraying an inhalant on a cloth or sponge and breathing through it.
Drug that induces sleep.
Not legally permitted.
A substance which causes inebriation.
Mostly legal substances, the fumes of which are sniffed or inhaled for their intoxicating effects.
To inhale a drug through the nose.
Prevention of illicit drugs from entering a given area through confiscation at national borders or ports of entry.
Temporary state of mental chaos and behavioral dysfunction resulting from the presence of a neurotoxin in the central nervous system.
An injection made into a muscle.
An injection into a vein. Referred to as "mainlining".
Marijuana cigarette.
An increased sensitivity to  cocaine sometimes found in long term users.
Items or tools that are used to ingest or inject drugs.
One of the most powerful synthetic psychedelics. It is derived from ergot fungus.
To add one substance to another, usually in minute quantities.
Preparation that promotes defecation. Sometimes used to counter the constipation side effect of some drugs.
A substance that is, or is claimed to be, psychoactive, but is legal to possess.
Injecting a substance directly into a vein.
Antipsychotic drug that relieves symptoms of schizophrenia and paranoia.
The dried leaves and flowering tops of the cannabis plant.
See amphetamine
Antianxiety agent that functions somewhat like a sedative-hypnotic, such as benzodiazipines.
A major alkaloid constituent of opium that is used as an analgesic and sedative.
Refers to opium, derivatives of opium, and their semi-synthetic substitutes. Cocaine, which is pharmacologically a stimulant, is also legally classified as a narcotic.
Colorless, oily compound in tobacco that is a central nervous system stimulant.
Any stimulant that is not cocaine.
Naturally occurring narcotic drug derived from the opium poppy.
Drug substance sold as medicine without a prescription.
An excessive ingestion of a drug that causes illness or death.
As defined by Title 21 of the United States Code, drug paraphernalia is "any equipment, product, or material of any kind which is primarily intended or designed for use in manufacturing, compounding, converting, concealing, producing, processing, preparing, injecting, ingesting, inhaling, or otherwise introducing into the human body a controlled substance, possession of which is unlawful under the Controlled Substances Act."
The branch of science dealing with the interaction of chemical agents with living organisms.
Simultaneous use of two or more drugs or medicines.
See Hallucinogens.
Mind-altering drug that affects thinking, feeling, and behavior.
Severe mental disorder characterized by loss of contact with reality.
Drugs that affect the mind.
Condition in which the upper eyelids droop that can be indicative of recent narcotic use.
Brief jolt and tingling sensation of intense well-being after a drug is injected.
Drug that has a calming effect, relaxes muscles, and relieves feelings of tension, anxiety, and irritability.
Drug that induces sleep and has a calming effect.
Very potent form of marijuana that is derived from the unpollinated female cannabis plant. Derived from the Spanish for "without seeds."
To ingest a drug by inhalation.  Also known as insufflation.
A broad group of drugs which cause body functions to accelerate. Primary examples include cocaine and methamphetamine.
Drug-related effect in which there is a mingling of the senses. For example, smells may be felt, colors may be heard.
The most psychoactive chemical found in the cannabis plant. Acronym for delta-9-tetrahydrocannabinol.
A substance that is applied to the skin or mucous membranes of the body.
An agent (such as a drug) that causes the blood vessels to narrow.