BOX WARNING WARNINGS
- Do not prescribe propoxyphene for patients who are suicidal or addiction-prone.
- Prescribe propoxyphene with caution for patients taking tranquilizers or antidepressant drugs and patients who use alcohol in excess.
- Tell your patients not to exceed the recommended dose and to limit their intake of alcohol.
Propoxyphene products in excessive doses, either alone or in combination with other CNS depressants, including alcohol, are a major cause of drug-related deaths. Fatalities within the first hour of overdosage are not uncommon. In a survey of deaths due to overdosage conducted in 1975, in approximately 20% of the fatal cases, death occurred within the first hour (5% occurred within 15 minutes). Propoxyphene should not be taken in doses higher than those recommended by the physician. The judicious prescribing of propoxyphene is essential to the safe use of this drug. With patients who are depressed or suicidal, consideration should be given to the use of non-narcotic analgesics. Patients should be cautioned about the concomitant use of propoxyphene products and alcohol because of potentially serious CNS-additive effects of these agents. Because of its added depressant effects, propoxyphene should be prescribed with caution for those patients whose medical condition requires the concomitant administration of sedatives, tranquilizers, muscle relaxants, antidepressants, or other CNS-depressant drugs. Patients should be advised of the additive depressant effects of these combinations.
Many of the propoxyphene-related deaths have occurred in patients with previous histories of emotional disturbances or suicidal ideation or attempts as well as histories of misuse of tranquilizers, alcohol, and other CNS-active drugs. Some deaths have occurred as a consequence of the accidental ingestion of excessive quantities of propoxyphene alone or in combination with other drugs. Patients taking propoxyphene should be warned not to exceed the dosage recommended by the physician.
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DARVON-N SUMMARY
Darvon-N® (Propoxyphene Napsylate, USP) is a centrally acting narcotic analgesic agent.
Darvon-N (propoxyphene) is indicated for the following:
For the relief of mild to moderate pain
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NEWS HIGHLIGHTSMedia Articles Related to Darvon-N (Propoxyphene)
propoxyphene and acetaminophen, Darvocet A500; Darvocet-N (Darvocet, Wygesic)
Source: MedicineNet Tylenol Liver Damage Specialty [2009.09.10]
Title: propoxyphene and acetaminophen, Darvocet A500; Darvocet-N (Darvocet, Wygesic)
Category: Medications
Created: 3/26/1998 2:30:00 PM
Last Editorial Review: 9/10/2009
Overdose Warning for Pain Drug Propoxyphene
Source: MedicineNet propoxyphene Specialty [2009.07.08]
Title: Overdose Warning for Pain Drug Propoxyphene
Category: Health News
Created: 7/8/2009
Last Editorial Review: 7/8/2009
Yoga May Be Effective For Chronic Low Back Pain In Minority Populations
Source: Health News from Medical News Today [2009.11.05]
Researchers from Boston University School of Medicine (BUSM) and Boston Medical Center found that yoga may be more effective than standard treatment for reducing chronic low back pain in minority populations. This study appears in the November issue of Alternative Therapies in Health and Medicine.
Radiation Therapy Technique Successfully Treats Pain In Patients With Advanced Cancer
Source: Cancer / Oncology News From Medical News Today [2009.11.05]
Stereotactic radiosurgery (SRS), a radiation therapy procedure pioneered at the University of Pittsburgh Cancer Institute (UPCI) that precisely delivers a large dose of radiation to tumors, effectively controls pain in patients with cancer that has spread to the spine, according to researchers from UPCI. The results of the research were presented this week during the American Society for Radiation Oncology (ASTRO) annual meeting in Chicago, being held November 1 - 5, 2009.
Common Pain Relievers May Dilute Power Of Flu Shots
Source: Biology / Biochemistry News From Medical News Today [2009.11.04]
With flu vaccination season in full swing, research from the University of Rochester Medical Center cautions that use of many common pain killers -- Advil, Tylenol, aspirin -- at the time of injection may blunt the effect of the shot and have a negative effect on the immune system. Richard P. Phipps, Ph.D.
Published Studies Related to Darvon-N (Propoxyphene)
Characterizing the subjective, psychomotor, and physiological effects of oral propoxyphene in non-drug-abusing volunteers. [2004.02.07]
BACKGROUND: The subjective, psychomotor, and physiological effects of a widely prescribed prescription opioid, propoxyphene, have not been studied in a population of non-drug-abusing people. The drug also has potential for abuse and it was of interest in the present study to determine if the drug had any abuse liability-related subjective effects in this population... CONCLUSIONS: There was a lack of statistically significant subjective effects of propoxyphene in the group as a whole, including a propoxyphene dose that was twice as high as the typical clinically-prescribed dose of 100 mg. However, there were some subjects who did report effects, consistent with the notion that patients differ in their sensitivity to opioid effects.
The cognitive and psychomotor effects of morphine in healthy subjects: a randomized controlled trial of repeated (four) oral doses of dextropropoxyphene, morphine, lorazepam and placebo. [2000.03]
Ten healthy subjects (four male) of mean age 31 years (range 25-40) took part in a randomized double-blind four-way crossover study to examine the cognitive and psychomotor effects of repeated oral doses of dextropropoxyphene and morphine. Four treatments were compared: dextropropoxyphene napsylate 100 mg, morphine sulphate 10 mg, lorazepam 0.5 mg and placebo...
Dextropropoxyphene versus morphine in opioid-naive cancer patients with pain. [1998.02]
The role of opioids for moderate pain (so-called "weak" opioids) in the second step of the World Health Organization's analgesic ladder has been investigated in a prospective randomized study. Sixteen patients were administered dextropropoxyphene (DPP) in a dosage ranging from 120 mg to 240 mg daily (group 1), and 16 patients were administered the lowest doses (20 mg daily) of commercially available controlled-release morphine (group 2)...
Analgesia after day case laparoscopic sterilisation. A comparison of tramadol with paracetamol/dextropropoxyphene and paracetamol/codeine combinations. [1997.07]
In a prospective, double-blind trial we compared the analgesic efficacy of tramadol during the first 24 h after day case laparoscopic sterilisation with two commonly prescribed combination analgesics. Seventy-five women were allocated randomly to receive oral paracetamol 325 mg/dextropropoxyphene hydrochloride 32.5 mg, tramadol 50 mg or paracetamol 500 mg/codeine phosphate 30 mg as required after a standardised anaesthetic technique...
[Analgesic effect and clinical tolerability of the combination of paracetamol 500 mg and caffeine 50 mg versus paracetamol 400 mg and dextropropoxyphene 30 mg in back pain] [1996.09.07]
OBJECTIVES: A double-blind randomized multicentric study was performed to test the hypothesis that the analgesic effect of paracetamol-cafeine is equivalent to that of paracetamol-dextropropoxyphen in patients suffering from pain due to osteoarthritis of the spine... CONCLUSION: The potentializing action of cafeine on paracetamol-induced pain relief enables a degree of pain relief equivalent to that of a combination using an analgesic with a peripheral action, paracetamol, and another with a central action, dextropoxyphen. The fact that the paracetamol-cafeine combination does not have a central action avoids secondary effects induced by central analgesics (drowsiness, constipation) in patients with osteoarthritis back pain.
Clinical Trials Related to Darvon-N (Propoxyphene)
Lumbar Stenosis Outcomes Research II [Recruiting]
The primary objective of the proposed pilot study is to determine the efficacy of
oxymorphone hydrochloride and propoxyphene/acetaminophen combination in prolonging the time
to onset of pain and reducing the severity of pain associated with walking in patients with
neurogenic intermittent claudication. The secondary objective is to examine the functional
benefit of oxymorphone hydrochloride and propoxyphene/acetaminophen combination with respect
to improvement in duration and distance of walking tolerance.
The proposed study will also provide the foundation for a treadmill-based methodology for
assessing the analgesic efficacy of drugs for low back pain provoked by standing and walking
associated with lumbar spinal stenosis.
Neuraxial Pethidine After Lumbar Surgery Trial [Recruiting]
The hypothesis is that epidural pethidine is an effective form of pain relief following
lumbar spinal surgery, resulting in significantly lower usage of concomitantly administered
(intravenous) patient-controlled analgesia (PCA) pethidine.
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Page last updated: 2009-11-05
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