Darvon

Chronic Pain

Treatment

2 FDA approvals

20 Active Studies for Darvon

What is Darvon

Dextropropoxyphene

The Generic name of this drug

Treatment Summary

Dextropropoxyphene is an opioid pain reliever that was manufactured by Eli Lilly and Company. It had been used to treat mild pain, but it was eventually removed from the market due to the risk of cardiac arrhythmias and overdose. Dextropropoxyphene is the only form of propoxyphene that has any pain-relieving effects, whereas the levo-isomer only has a limited effect on coughs.

Propoxyphene

is the brand name

image of different drug pills on a surface

Darvon Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Propoxyphene

Dextropropoxyphene

1973

64

Approved as Treatment by the FDA

Dextropropoxyphene, also known as Propoxyphene, is approved by the FDA for 2 uses like Chronic Pain and Pain .

Chronic Pain

Helps manage Pain

Pain

Helps manage Pain

Effectiveness

How Darvon Affects Patients

Propoxyphene is a synthetic drug similar to methadone. It works by attaching to the same receptors in the brain as opiates, which makes a person feel less pain. Propoxyphene does not help reduce coughing or fever.

How Darvon works in the body

Propoxyphene works by interacting with special receptors in the brain and central nervous system. These receptors, called OP1, OP2, and OP3, help regulate pain signals in the body. Propoxyphene primarily affects OP3 receptors, which help decrease the activity of certain nerve cells, preventing them from sending pain signals. This helps to reduce pain and discomfort. Propoxyphene also affects other receptors which help to reduce the release of certain neurotransmitters, including substances that are involved in inflammation and stress. Finally, Propoxyphene helps reduce neuronal excitability by closing certain voltage-operated calcium channels and opening others,

When to interrupt dosage

The advocated dose of Darvon is contingent upon the diagnosed condition. The magnitude of dosage is also dependent on the technique of administration outlined in the table below.

Condition

Dosage

Administration

Chronic Pain

, 65.0 mg, 100.0 mg, 50.0 mg

, Oral, Tablet, film coated, Tablet, film coated - Oral, Capsule, Capsule - Oral, Tablet - Oral, Tablet

Warnings

Darvon has five contraindications, so it should not be ingested while struggling with any of the conditions enumerated in the subsequent table.

Darvon Contraindications

Condition

Risk Level

Notes

Hypercarbia

Do Not Combine

Asthma

Do Not Combine

Mental Depression

Do Not Combine

Intestinal Pseudo-Obstruction

Do Not Combine

Asthma

Do Not Combine

There are 20 known major drug interactions with Darvon.

Common Darvon Drug Interactions

Drug Name

Risk Level

Description

7,8-Dichloro-1,2,3,4-tetrahydroisoquinoline

Major

The risk or severity of adverse effects can be increased when Dextropropoxyphene is combined with 7,8-Dichloro-1,2,3,4-tetrahydroisoquinoline.

Abemaciclib

Major

The metabolism of Abemaciclib can be decreased when combined with Dextropropoxyphene.

Acalabrutinib

Major

The metabolism of Acalabrutinib can be decreased when combined with Dextropropoxyphene.

Alectinib

Major

The metabolism of Alectinib can be decreased when combined with Dextropropoxyphene.

Alpelisib

Major

The metabolism of Alpelisib can be decreased when combined with Dextropropoxyphene.

Darvon Toxicity & Overdose Risk

Symptoms of propoxyphene overdose include falling into a coma, slowed breathing, low blood pressure, and a buildup of fluid in the lungs. Seizures are also more common in patients who have overdosed on propoxyphene than on other opioids. The lowest toxic dose of propoxyphene in rats has been found to be 230mg/kg when taken orally.

image of a doctor in a lab doing drug, clinical research

Darvon Novel Uses: Which Conditions Have a Clinical Trial Featuring Darvon?

A total of 172 active trials are currently being conducted to assess the potential of Darvon in managing Chronic Pain.

Condition

Clinical Trials

Trial Phases

Chronic Pain

123 Actively Recruiting

Not Applicable, Phase 2, Phase 4, Phase 3, Early Phase 1, Phase 1

Darvon Reviews: What are patients saying about Darvon?

5

Patient Review

11/23/2010

Darvon for Pain

This treatment really helps with my lower back pain. It's the only thing that has been effective for my headaches as well.

5

Patient Review

2/22/2014

Darvon for Pain

This treatment is effective.

5

Patient Review

10/12/2010

Darvon for Pain

Unfortunately, this medication did not do much for me. I have a lot of back problems and this didn't help alleviate any pain.

4.7

Patient Review

9/1/2009

Darvon for Pain

Darvon 65 capsules unfortunately did nothing to relieve the pain I experience in my lower back.

4.3

Patient Review

11/5/2011

Darvon for Pain

This drug is great. It really helped me.

3.7

Patient Review

6/6/2010

Darvon for Pain

The primary effect I experienced while taking this medication was intense hallucinations. It provided very little pain relief, which is why I was prescribed it in the first place. I quickly returned it to my surgeon and got a replacement within the week.

3

Patient Review

4/6/2010

Darvon for Pain

I took this medication for knee and hip pain, but it barely did anything. I accidentally took two pills, and there was still no significant change. The only side effects I felt were flushness and slight dizziness.

3

Patient Review

2/1/2011

Darvon for Osteoporosis

Unfortunately, this medication severely impairs my vision to the point where I can't read. Additionally, it gives me excruciating abdominal pain that feels like cramps but much worse.

3

Patient Review

2/3/2011

Darvon for Osteoporosis

This drug is effective. I'm grateful for modern medicine.

3

Patient Review

2/3/2011

Darvon for Osteoporosis

This drug is great. It really helped me.

3

Patient Review

2/4/2011

Darvon for Osteoporosis

This drug is effective. I'm grateful for modern medicine.

3

Patient Review

2/4/2011

Darvon for Osteoporosis

This drug is great. I'm grateful for modern medicine.

3

Patient Review

9/8/2010

Darvon for Pain

I'm not comfortable recommending this drug to anyone after my cousin died from an overdose.

1.7

Patient Review

6/17/2009

Darvon for Pain

1.3

Patient Review

12/24/2009

Darvon for Pain

I use this to manage my chronic pain from spinal issues, fibromyalgia, and it works better for me than Oxycontin did.

1

Patient Review

7/5/2010

Darvon for Pain

Roxicodone 30 mg blue tablets have been the most effective treatment for my back problems. I would highly recommend them to anyone with similar issues.

1

Patient Review

11/26/2010

Darvon for Pain

I've been taking Darvon for migraines for over 50 years. It's not a cure-all, but it does help significantly reduce the pain most of the time. I take oxycodone when the pain is really bad, but that comes with its own set of problems. People need to be more careful and understand how their bodies react to drugs before taking them.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about darvon

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Is Darvon still prescribed?

"As of today, propoxyphene-containing products are no longer available in America after the FDA concluded that the risks associated with propoxyphene outweigh the benefits."

Answered by AI

What is the generic name for Darvon?

"Darvon is a drug that is used to treat mild to moderate pain. It is classified as a narcotic, which is a type of drug that is derived from the opium poppy."

Answered by AI

What is difference between Darvon and Darvocet?

"The FDA has ordered Xanodyne to conduct a safety study which has prompted the agency's decision to remove Darvon from the market. This is due to Darvon only containing propoxyphene as an active ingredient, whereas Darvocet combines it with acetaminophen."

Answered by AI

Why was Darvon taken off the market?

"The FDA withdrew Darvon and Darvocet from the market after a study found that the drugs put patients at risk of arrhythmias, or heart rhythm abnormalities. The FDA decided that the risks of the drugs were greater than their benefits to patients suffering from mild to moderate pain."

Answered by AI

Clinical Trials for Darvon

Image of Cincinnati Urogynecology Associates in Cincinnati, United States.

Nitrous Oxide for Pain During Bladder Botox Injections

18+
Female
Cincinnati, OH

The goal of this clinical trial is to assess if a mix of nitrous oxide and oxygen can improve pain control during bladder Botox injections. The primary question it aims to answer is: Does using nitrous oxide lower the overall level of pain during the procedure? Researchers will compare a 50:50 nitrous oxide/oxygen mixture (administered with the Pro-Nox system) plus standard care (with lidocaine in the bladder) to sham mask plus standard care to see if nitrous oxide works better for lowering pain. Participants will: * Receive their bladder Botox injection in the office setting * Either use nitrous oxide/oxygen plus standard care during the procedure, or sham mask plus standard care * Answer brief questions about pain, anxiety, satisfaction, and willingness to repeat the procedure

Phase 4
Waitlist Available

Cincinnati Urogynecology Associates (+1 Sites)

Image of AltaSciences, Inc in Cypress, United States.

SBS-147 Safety Study

18 - 55
All Sexes
Cypress, CA

This study is part of the HEAL Initiative supported by the NIH. The purpose of this study is to learn how safe the study drug, SBS-147, is and how people's bodies respond to and process it. Researchers will also look for any side effects that may occur when taking SBS-147. Some participants will receive SBS-147, and others will receive a placebo, which looks the same but does not contain any medicine. This helps researchers fairly compare results. The study includes two parts: Single-Dose Group, where Participants receive SBS-147 or placebo one time. Multiple-Dose Group, where Participants receive SBS-147 or placebo once or twice daily for 7 days.

Phase 1
Waitlist Available

AltaSciences, Inc

Jeff Reich, MD

Sparian Biosciences, Inc

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Image of Hospital for Special Surgery in New York, United States.

Suzetrigine for Total Hip Replacement

18 - 80
All Sexes
New York, NY

Total hip and knee joint replacements are among the most common and painful orthopedic procedures performed worldwide, often requiring intensive analgesia to support early ambulation and recovery. Despite widespread use of multimodal regimens, many patients still rely on opioids, which can cause sedation, nausea, constipation, and long-term dependency. Evaluating Suzetrigine in this high-need population may improve recovery trajectories, reduce opioid consumption, and support enhanced recovery protocols. Given the growing surgical volume and the emphasis on opioid-sparing strategies, rigorous investigation of Suzetrigine's efficacy in joint replacement is of high clinical value. In this study, patients undergoing primary total hip replacement will be randomized to receive either Suzetrigine or placebo for seven days, with the loading dose administered prior to surgery. The primary outcome is cumulative 48-hour opioid consumption in oral morphine equivalents starting from entry into the post-anesthesia care unit (PACU).

Phase 3
Recruiting

Hospital for Special Surgery

Image of Vanderbilt University Medical Center in Nashville, United States.

Lidocaine Infusions for Postoperative Pain

18+
All Sexes
Nashville, TN

The goal of this single-center, pragmatic, randomized, blinded, placebo-controlled trial is to evaluate the impact of intravenous (IV) lidocaine within the existing Enhanced Recovery After Surgery (ERAS)program on outcomes in patients after major abdominal surgery. The main questions the trial aims to answer are: The primary hypothesis is that utilization of IV lidocaine as part of a perioperative multimodal pain regimen will result in a reduction in hospital Case Mix Index-Adjusted Resource Length of Stay (CARLOS). The secondary hypotheses are that lidocaine infusion will result in a reduction in total inpatient opioid consumption (oral morphine milligram equivalents, oMMEs) and pain scores, and improved surgical outcomes (including return of bowel function, ileus, nausea, rapid responses called, surgical site infections, and ICU transfers), while also having minimal incidence of side effects (including double/blurry vision, tinnitus, sedation, and adverse events requiring early cessation).

Phase 4
Waitlist Available

Vanderbilt University Medical Center

Danial Shams, MD

Image of Baylor College of Medicine/Texas Children's Hospital in Austin, United States.

Guided Imagery Therapy for Abdominal Pain

7 - 12
All Sexes
Austin, TX

Chronic abdominal pain is common among children, and the majority of cases are attributed to functional abdominal pain disorders. One approach to treating these disorders is by using psychological therapies. This clinical trial aims to see how well pre-recorded guided imagery therapy sessions help children's abdominal pain when delivered via a mobile application (app) on a smartphone or tablet. Participants will complete a baseline abdominal pain and stooling diary to determine eligibility, as well as other surveys. Eligible participants will be given access to the guided imagery therapy mobile application. This intervention asks participants to listen to a 10- to 15-minute GIT session 5 out of 7 days per week for 8 weeks, in addition to their usual care for their abdominal pain. Then, participants will complete another abdominal pain and stooling diary, along with other psychometric surveys, at the end of this intervention period. Participants will also collect another diary and surveys 3 months post-treatment.

Waitlist Available
Has No Placebo

Baylor College of Medicine/Texas Children's Hospital (+1 Sites)

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