A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.

In pharmacology, a drug is "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.

The molecules of drugs are complex, and most of them consist of many hydrogen and carbon atoms, a few oxygen atoms, and one or a few nitrogen atoms. Drugs may also have no nitrogen atoms in it and many may have chlorine atoms in it, such as chloral hydrate.

Recreational drugs are chemical substances that affect the central nervous system, such as opioids or hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can cause addiction and/or habituation.

A trial is, in the most general sense, a test, usually a test to see whether something does or does not meet a given standard.

It may refer to:

Sue Lloyd-Roberts MBE (born 1952) is an Emmy Award-winning television journalist, who works as Special Correspondent for the BBC, travelling to, and reporting on, major news stories across the world, including important issues not covered widely elsewhere. Earlier in her career, she worked for ITN.

During a career lasting several decades, Lloyd-Roberts has produced reports from states such as North Korea and Syria, where she focuses on a range of important issues such as human rights violations, environmental degradation and political corruption. She was awarded the European Women of Achievement Award in 1995.

Sue Lloyd (7 August 1939 – 20 October 2011) was an English model turned actress with numerous film and television credits.

The daughter of a GP, Susan Margery Jeaffreson Lloyd was born in Aldeburgh, Suffolk. She attended Edgbaston High School in Birmingham and studied dance as a child, attending Sadler's Wells Ballet School. As her height (5 feet 8 inches (1.73 m)) increased, her possibilities for a career as a dancer diminished, and she became a showgirl and model, and, briefly, a member of Lionel Blair's dance troupe.

She was one of the last two debutantes to be presented to the Queen at Buckingham Palace in 1958; the final such ceremony.

She made her film debut in two espionage themed films in 1965. Lloyd was a glamorous foil to Michael Caine's Harry Palmer in the spy thriller The IPCRESS File, and she later appeared alongside Caine's Palmer in Bullet to Beijing (1995). In 1965 she had a role in The Return of Mr. Moto

In the same year Lloyd played the regular role of secret agent Cordelia Winfield, alongside Steve Forrest in the 1965-66 British ITC television series The Baron. Originally Lloyd's character only appeared in the pilot episode with Steve Forrest's sidekick played by Paul Ferris. Pressure from the American television network who were to screen the show replaced Ferris with the glamourous Lloyd.

Lloyd "Mooseman" Roberts was an American heavy metal, punk and rap bassist. He is best remembered for his tenure in the band Body Count. He was killed in a random shooting in front of a hardware store in South Central, Los Angeles on 22 February 2001.