II. Indications: Listed for historical purposes only

  1. Analgesic (discontinued in U.S. 2007 and FDA banned in the U.S. in 2010)

III. Dosing: Acetaminophen 650 with Propoxyphene 100 (Darvocet N-100)

  1. Dose: 1 PO q4-6 hours

IV. Efficacy

  1. Propoxyphene 100 equivalent to Codeine 32 mg
  2. Tylenol alone is as effective as Darvocet
    1. Li Wan Po (1997) BMJ 315 [PubMed]

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Ontology: Propoxyphene (C0033493)

Definition (NCI) The d-isomer of synthetic diphenyl propionate derivative propoxyphene, with narcotic analgesic effect. This agent mimics the effects of the endogenous opiate dextropropoxyphene, by binding to mu receptors located throughout the central nervous system. The binding results in GTP to GDP exchanges on the mu-G-protein complex, by which effector adenylate cyclase is inactivated thereby decreasing intracellular cAMP. This, in turn, inhibits the release of various nociceptive neurotransmitters, such as substance P, gamma-aminobutyric acid (GABA), dopamine, acetylcholine, noradrenaline, vasopressin, and somatostatin. In addition, dextropropoxyphene closes N-type voltage-gated calcium channels and opens calcium-dependent inwardly rectifying potassium channels. This results in hyperpolarization, thereby reducing neuronal excitability, which further decreases the perception of pain.
Definition (MSH) A narcotic analgesic structurally related to METHADONE. Only the dextro-isomer has an analgesic effect; the levo-isomer appears to exert an antitussive effect.
Concepts Pharmacologic Substance (T121) , Organic Chemical (T109)
MSH D011431
SnomedCT 387042001, 117005003, 387196000, 255693004, 36479003
LNC LP15017-4, MTHU001004
English Propoxyphene, D-Propoxyphene, D Propoxyphene, Benzeneethanol, alpha-(2-(dimethylamino)-1-methylethyl)-alpha-phenyl-, propanoate (ester), (S-(R*,S*))-, PROPOXYPHENE D, Dextropropoxyphene, Propoxyphene (product), Dextropropoxyphene (product), synthetic narcotics propoxyphene preparations, propoxyphene preparations (medication), propoxyphene preparations, Dextropropoxyphene [Chemical/Ingredient], d-Propoxyphene, 4-Dimethylamino-3-methyl-1,2-diphenyl-2-propoxybutane, dextropropoxyphene, Propoxyphene (substance), propoxyphene, PROPOXYPHENE, Dextropropoxyphene (substance)
Portuguese Dextropropoxifeno, D-Propoxifeno
Spanish Dextropropoxifeno, propoxifeno, dextropropoxifeno (producto), propoxifeno (producto), propoxifeno (sustancia), dextropropoxifeno (sustancia), dextropropoxifeno, D-Propoxifeno
Finnish Dekstropropoksifeeni
French D-Propoxyphène, Propoxyphène, Dextropropoxyphène
Italian D-propossifene, Destropropossifene, Propossifene
Russian D-PROPOKSIFEN, PROPOKSIFEN, ДЕКСТРОПРОПОКСИФЕН, DEKSTROPROPOKSIFEN, ПРОПОКСИФЕН, PROPOKSIFENA NAPSILAT, PROPOZIFEN, Д-ПРОПОКСИФЕН, ПРОПОЗИФЕН, ПРОПОКСИФЕНА НАПСИЛАТ
Swedish Dextropropoxifen
German PROPOXYPHEN D, D-Propoxyphen, Dextropropoxyphen, Propoxyphen
Czech propoxyfen, dextropropoxyfen
Polish Propoksyfen, Dekstropropoksyfen
Japanese デキストロプロポキシフェン, プロポキシフェン, プロポキシフェンナプシラート, D-プロポキシフェン

Ontology: Darvocet (C1514497)

Concepts Organic Chemical (T109) , Pharmacologic Substance (T121)
English Darvocet