Drug

Uncoated aspirin tablets, consisting of about 90% acetylsalicylic acid, along with a minor amount of inert fillers and binders. Aspirin is a pharmaceutical drug often used to treat pain, fever, and inflammation.

Nexium (Esomeprazole) is a proton-pump inhibitor. It is used to reduce the production of stomach acid.

Any chemical substance that causes a change in an organism's physiology or psychology when consumed.

- Drug

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Myoglobin (blue) with its ligand heme (orange) bound. Based on

Biological target

A biological target is anything within a living organism to which some other entity (like an endogenous ligand or a drug) is directed and/or binds, resulting in a change in its behavior or function.

Ritalin: 20 mg sustained-release (SR) tablets

Stimulants (also often referred to as psychostimulants or colloquially as uppers) is an overarching term that covers many drugs including those that increase activity of the central nervous system and the body, drugs that are pleasurable and invigorating, or drugs that have sympathomimetic effects.

Distilled (concentrated) alcoholic beverages, sometimes called “spirit” or "hard liquor", roughly eight times more alcoholic than beer

Depressant

Xanax (alprazolam) 2 mg tri-score tablets

A depressant, or central depressant, is a drug that lowers neurotransmission levels, which is to depress or reduce arousal or stimulation, in various areas of the brain.

Side effect

In medicine, a side effect is an effect, whether therapeutic or adverse, that is secondary to the one intended; although the term is predominantly employed to describe adverse effects, it can also apply to beneficial, but unintended, consequences of the use of a drug.

Addiction

Acute confusional state caused by alcohol withdrawal, also known as delirium tremens

Addiction is an involuntary neuropsychological disorder characterized by persistent use of a drug, despite substantial harm and other negative consequences.

Simple green Greek cross, widely used in {{citation needed span|date=October 2020|Europe and India,}} often an animated neon sign

Pharmacy

A medication is a drug used to diagnose, cure, treat, or prevent disease.

The Apothecary or The Chemist by Gabriël Metsu (c. 1651–67)

Pharmacy, Tacuinum sanitatis casanatensis (14th century)

A pharmacy worker distributing drugs to an old women at a local clinic.

Physician and Pharmacist, illustration from Medicinarius (1505) by Hieronymus Brunschwig

Dioscorides, De Materia Medica, Byzantium, 15th century

Sign of the Town Hall Pharmacy in Tallinn, operating continuously from at least 1422, showing the Bowl of Hygieia

Airman 1st Class Breanna DeMasters and Staff Sgt. Giovanni Fiorito, 332nd Expeditionary Medical Group pharmacy technicians, fill prescription medication for patients, Oct. 7, Joint Base Balad Iraq.

Pharmacists now go on rounds with doctors and have more patient interaction.

Rod of Asclepius, the internationally recognised symbol of medicine

Green cross and Bowl of Hygieia used in Europe (with the exception of Germany and Austria) and India

Red "A" (Apotheke) sign, used in Germany

The mortar and pestle, used in the United States and Canada

A hanging Show globe, formerly used in the United States

The Gaper, formerly used in the Netherlands

The symbol used on medical prescriptions, from the Latin recipe (take thou).

Pharmacy is the clinical health science that links medical science with chemistry and it is charged with the discovery, production, disposal, safe and effective use, and control of medications and drugs.

Fragment of a hypodermic needle stuck inside the arm of an IV drug user (x-ray)

Drug injection

This article describes drug injections primarily in the context of recreational drug use.

A clandestine kit containing materials to inject drugs, a bottle of a type of lean, promethazine, an antiemetic, and unidentified pills.

A sterile and safe injection kit obtained from a needle exchange program

Drug injection is a method of introducing a drug into the bloodstream via a hollow hypodermic needle, which is pierced through the skin into the body (usually intravenously, but also at an intramuscular or subcutaneous location).

A drug manufacturer inspection by the US Food and Drug Administration

Pharmaceutical industry

Diethylbarbituric acid was the first marketed barbiturate. It was sold by Bayer under the trade name Veronal

In 1937 over 100 people died after ingesting a solution of the antibacterial sulfanilamide formulated in the toxic solvent diethylene glycol

Measles cases reported in the United States before and after introduction of the vaccine.

Percent surviving by age in 1900, 1950, and 1997.

Malformation of a baby born to a mother who had taken thalidomide while pregnant.

The pharmaceutical industry discovers, develops, produces, and markets drugs or pharmaceutical drugs for use as medications to be administered to patients (or self-administered), with the aim to cure them, vaccinate them, or alleviate symptoms.

Anatomical Therapeutic Chemical Classification System

The Anatomical Therapeutic Chemical (ATC) Classification System is a drug classification system that classifies the active ingredients of drugs according to the organ or system on which they act and their therapeutic, pharmacological and chemical properties.

Anesthetic

Chemical structure of isoflurane, widely used for inhalational anesthesia.

An anesthetic (American English) or anaesthetic (British English; see spelling differences) is a drug used to induce anesthesia ⁠— ⁠in other words, to result in a temporary loss of sensation or awareness.