Propoxyphene drug data and news

Propoxyphene drug data, resources, and news articles (when available). Onconews.org provides news on cancer research. This section, which includes profiles on medicines that may or not be cancer-related is in beta form. If things run smoothly we will be releasing a new format late in the summer of 2006.

Generic name Propoxyphene
Brand Names/Synonyms Algafan; Antalvic; D-Propoxyphene; Darvocet; Darvon; Darvon-N; Deprancol; Depromic; Dextropropoxyphene; Dextropropoxyphene-M; Dextroproxifeno; Dolene; Dolocap; Doloxen; Doloxene; Erantin; Femadol; Harmar; Kesso-Gesic; Propacet; Prophene 65; Propoxychel; Propoxyphene; Propoxyphene Hcl; Propoxyphene Hcl 65; Proxagesic; SK 65
Indication For pain relief
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Description Not Available
Pharmacology Propoxyphene, a synthetic opiate agonist, is structurally similar to methadone. The analgesic effect of propoxyphene is due to the d-isomer, dextropropoxyphene. It binds to the opiate receptors and leads to a decrease of the perception of pain stimuli.
Mechanism Of Action Propoxyphene acts as a weak agonist at OP1, OP2, and OP3 opiate receptors within the central nervous system (CNS). Propoxyphene primarily affects OP3 receptors, which are coupled with G-protein receptors and function as modulators, both positive and negative, of synaptic transmission via G-proteins that activate effector proteins. Binding of the opiate stimulates the exchange of GTP for GDP on the G-protein complex. As the effector system is adenylate cyclase and cAMP located at the inner surface of the plasma membrane, opioids decrease intracellular cAMP by inhibiting adenylate cyclase. Subsequently, the release of nociceptive neurotransmitters such as substance P, GABA, dopamine, acetylcholine, and noradrenaline is inhibited. Opioids such as Propoxyphene also inhibit the release of vasopressin, somatostatin, insulin, and glucagon. Opioids close N-type voltage-operated calcium channels (OP2-receptor agonist) and open calcium-dependent inwardly rectifying potassium channels (OP3 and OP1 receptor agonist). This results in hyperpolarization and reduced neuronal excitability.
Propoxyphene News
(When available)

WayPoint Biomedical Launches New Range of Clinical Drugs of Abuse ...  16 May 2006
...confirmation. A second drug test, the Multi-Drug-11 includes all the above mentioned drugs, along with Oxycodone and Propoxyphene. ... - MacReport (press release),

Don’t ask, might not think to tell: Communication key to ...  16 May 2006
Mixing standard doses of acetaminophen with a narcotic pain medication that also contains acetaminophen in combination with propoxyphene can damage the liver. ... - University of Florida,

Baker sentenced to six years  May 13, 2006
...a LPD investigation, which alleged they were dealing in a variety of pills, including prescription-based pain medication morphine and propoxyphene and generic ... - Linton Daily Citizen,

7.5 crore drug addicts in India: Survey  May 3, 2006
While Buprenophine, propoxyphene and heroin were commonly injected drugs, sharing of needles among IDUs is common and on an average with three partners per ... - CNN-IBN,

Two face drug charges  Apr 18, 2006
The poison control center identified the single pill in the baggy as acetaminophen-propoxyphene, which is used to treat mild to moderate pain and requires a ... - Beaver Dam Daily Citizen,

Dosage Forms Tablets
Drug_Category Narcotics; Antitussives; Analgesics; ATC:N02AC04; ATC:N02AC54; ATC:N02AC74
Absorption Not Available
Interactions Interactions for Propoxyphene:

The CNS-depressant effect of propoxyphene is additive with that of other CNS depressants, including alcohol.

As is the case with many medicinal agents, propoxyphene may slow the metabolism of a concomitantly administered drug. Should this occur, the higher serum concentrations of that drug may result in increased pharmacologic or adverse effects of that drug. Such occurrences have been reported when propoxyphene was administered to patients on antidepressants, anticonvulsants, or warfarin-like drugs. Sever neurologic signs, including coma, have occurred with concurrent use of carbamazepine.

Toxicity coma, respiratory depression, circulatory collapse, and pulmonary edema. Seizures occur more frequently in patients with propoxyphene intoxication than in those with opiate intoxication. LD50=230mg/kg (orally in rat, Emerson)
Organisms Affected Humans and other mammals
Chemical IUPAC Name (4-dimethylamino-3-methyl-1,2-diphenyl-butan-2-yl) propanoate
Chemical Formula C22H29NO2
Molecular Weight 339.471 g/mol
Smiles String CCC(=O)OC(CC1=CC=CC=C1)(C2=CC=CC=C2)C(C)CN(C)C
Melting Point 75-76°C
Water Solubility 19.6mg/L
State odorless, white crystalline powder with a bitter taste
LogP/Hphobicity 4.901
Isoelectric Point Not Available
Biotransformation Hepatic
Half Life 6-12 hours
Protein Binding [%] Not Available
RxList Link RXlist
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Drug Reference http://www.drugs.com/cons/Propoxyphene.html
http://www.rxlist.com/cgi/generic/propox.htm
Drug Type Approved Drug
Accession No APRD00548
CAS Registry Number 469-62-5
KEGG Compound ID C07406
PubChem ID SID:270993
PharmGKB ID PA451142
SwissProt ID Not Available
GenBank ID Not Available
Drug ID Number [DIN] Not Available

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