Piritramide
Encyclopedia
Piritramide is a synthetic opioid
Opioid
An opioid is a psychoactive chemical that works by binding to opioid receptors, which are found principally in the central and peripheral nervous system and the gastrointestinal tract...

 analgesic
Analgesic
An analgesic is any member of the group of drugs used to relieve pain . The word analgesic derives from Greek an- and algos ....

 with a potency 0.65 to 0.75 times that of morphine. A common starting dose is 15 mg IV, equivalent to 10 mg of morphine hydrochloride. Piritramide is commonly used for the treatment of postoperative pain. Piritramide was discovered at Janssen Pharmaceutica
Janssen Pharmaceutica
Janssen Pharmaceutica is pharmaceutical company, established in Belgium in 1953 by Paul Janssen. Its headquarters are located in Beerse, in the Campine region of the province of Antwerp, Belgium. It was created not as a subsidiary of a chemical factory but solely with the aim of conducting...

 in 1960 and is currently manufactured and distributed within continental Europe and some other places by Janssen-Cilag.

Piritramide is available in tablets and ampoules of sterile solution for injection by all routes, and is used in Patient Controlled Analgesia units. In addition to PCA, piritramide is most often used in post-operative situations and emergency departments; some of its properties would seem to lend it well to chronic pain control as well. It is one of the longer-lasting opioids and has a plasma half-life of 3 to 12 hours. Piritramide tends to cause less respiratory depression than morphine and can take a while to have full effect especially if taken by mouth.

Piritramide is also known as pirinitramide. Its closest chemical relatives amongst well-known drugs are diphenoxylate
Diphenoxylate
Diphenoxylate is an opioid agonist used for the treatment of diarrhea that acts by slowing intestinal contractions and peristalsis allowing the body to consolidate intestinal contents and prolong transit time, thus allowing the intestines to draw moisture out of them at a normal or higher rate and...

 (Lomotil) and bezitramide
Bezitramide
Bezitramide is a narcotic analgesic. Bezitramide itself is a prodrug which is readily hydrolyzed in the gastrointestinal tract to its main metabolite, despropionyl-bezitramide. Bezitramide was discovered at Janssen Pharmaceutica in 1961...

(Burgodin).

Piritramide's most common trade name is Dipidolor and it is used most heavily in the Netherlands, Denmark, and Germany.

Piritramide is a strong opioid and therefore is regulated much the same as morphine in all known jurisdictions. It was never introduced in the United States and is therefore a Schedule I/Narcotic controlled substance. It is listed under international treaties and other laws such as the German Betäubungsmittelgesetz, the Austrian Suchtgiftmittelgesetz, the Opium Laws of various other European countries, Canadian controlled substances act, UK Misuse of Drugs Act of 1971, and equivalents elsewhere. Strangely enough, bezitramide, which is not currently marketed in the United States is a Schedule II/Narcotic controlled substance.

Piritramide has a small but dedicated community of recreational users and it has the street names P, Dip (rhymes with "pipe") and Pierrette.
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