Description
Opium is the dried latex that exudes from the scored seed capsules of the opium poppy (Papaver somniferum). It contains a complex mixture of over 50 naturally occurring alkaloids, the most potent and abundant being morphine, codeine, thebaine, and papaverine.
Opium acts as a central nervous system depressant and potent analgesic, slowing down bodily functions, reducing pain, and producing a dreamlike state of relaxation. It is the direct botanical parent from which morphine, codeine, and semi-synthetic opioids (including heroin and oxycodone) are derived.
It has been cultivated and used by humans as an indispensable medicine and social relaxant for over 5,000 years, and opium poppy straw remains the primary global agricultural source for modern pharmaceutical analgesics today.
Desirable Effects
- Deep physical relaxation and calm
- Analgesia (effective pain relief)
- Drowsy, dreamlike state of mind and reduction of emotional stress
Undesirable Effects
- Nausea and dizziness
- Headaches and confusion (especially at higher doses)
- Constipation and urinary retention
- Respiratory depression at excessive doses
- Development of tolerance and physical dependence with sustained use
What does it look like?
Raw opium appears as a dark brown, black, or reddish-brown sticky gum, resin, or dried tar-like substance with a distinct, pungent, bittersweet herbal aroma. It is not widely circulating in UK recreational drug scenes, typically brought into the country in small personal amounts from cultivating regions such as Afghanistan, Iran, or Southeast Asia.
Method of Use
Smoked / Vaporised: Historically smoked using specialised pipes or vaporised through heat. The raw gum is heated to release opioid-rich vapours without combusting the plant matter.
Swallowed: Ingested orally in raw pellets or dissolved into traditional medicinal decoctions and tinctures (such as laudanum).
Note on injecting: Raw opium contains plant resins, fats, and insoluble matter and cannot be safely injected. Attempting to inject raw opium causes catastrophic vascular blockages and severe infection.
Pharmacology
Opium exerts its effects through a synergy of natural alkaloids. The principal active component is morphine (typically 10–16% of raw opium weight), alongside codeine (0.5–2.5%), which act as agonists at µ-opioid receptors (MOR) throughout the brain and spinal cord.
Opium also contains non-analgesic alkaloids such as papaverine (a smooth muscle relaxant) and noscapine (a non-sedating cough suppressant), which modify the overall physiological response.
Upon entering the bloodstream, the active alkaloids cross into the central nervous system, binding to opioid receptors to inhibit pain signal transmission and elicit feelings of tranquility. Chronic use downregulates opioid receptors, creating dependence and withdrawal symptoms upon cessation. In excessive quantities, opioid-induced respiratory depression presents fatal risks, particularly if combined with other sedating substances.
History
The opium poppy is one of the earliest domesticated plants in human history. Archaeological evidence confirms poppy cultivation in the fertile crescent of lower Mesopotamia by the Sumerians as early as 3400 BCE, who referred to it as Hul Gil (‘the joy plant’). Knowledge of its medicinal and euphoric qualities passed to the Assyrians, Babylonians, and ancient Egyptians, who traded it extensively across the Mediterranean.
During the Middle Ages, Arab traders introduced opium to India and China. In 16th-century Europe, physician Paracelsus introduced laudanum, an alcoholic tincture of opium that became a universal household painkiller and sedative for centuries.
By the 18th and 19th centuries, the British East India Company established a state-backed monopoly over Indian opium production, smuggling vast quantities into China to balance trade deficits, sparking the First (1839–1842) and Second (1856–1860) Opium Wars. In 19th-century Victorian Britain, opium was celebrated by Romantic literary figures such as Thomas De Quincey and Samuel Taylor Coleridge before international treaties and the Dangerous Drugs Act 1920 established strict prohibitions.
Law
Class A under the Misuse of Drugs Act 1971.
Schedule 1 (raw opium) / Schedule 2 (medicinal opium preparations) under the Misuse of Drugs Regulations 2001.
Possible offences
- Possession: Maximum sentence of up to 7 years imprisonment, an unlimited fine, or both.
- Possession With Intent To Supply (PWITS): Maximum sentence of up to life imprisonment, an unlimited fine, or both.
- Supply: Maximum sentence of up to life imprisonment, an unlimited fine, or both.
- Production: (including cultivating the opium poppy for the purpose of harvesting opium) Maximum sentence of up to life imprisonment, an unlimited fine, or both.
For more detailed information on sentencing guidelines and rights, visit our Drugs Law section.
