Darvocet A500

Chronic Pain

Treatment

2 FDA approvals

20 Active Studies for Darvocet A500

What is Darvocet A500

Dextropropoxyphene

The Generic name of this drug

Treatment Summary

Acetaminophen (also known as Tylenol) is an over-the-counter pain reliever and fever reducer that is widely used all over the world. It comes in many forms, including syrup, tablets, effervescent tablets, injections, and suppositories. It is often found in combination with other drugs in more than 600 over-the-counter medications for allergies, colds, sleep, and pain relief. It is important to follow the recommended dosage instructions for this medication since taking too much of it can lead to fatal overdose or liver failure.

Propoxyphene

is the brand name

image of different drug pills on a surface

Darvocet A500 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 Darvocet A500 Affects Patients

Acetaminophen is a drug used to reduce fever and pain. It does not cause inflammation, nor does it interfere with how the body produces uric acid or affects acid-base balance when taken in the recommended doses. It is also unlikely to cause allergic reactions. It does not interfere with blood clotting or prevent platelets from clumping together.

How Darvocet A500 works in the body

Acetaminophen works to reduce pain by blocking the body's ability to create pain-causing chemicals. It does this by inhibiting two types of proteins called cyclooxygenases, which are involved in the production of prostaglandins. Acetaminophen does not affect these proteins in other parts of the body, so it does not have anti-inflammatory effects. It is also thought to work on heat regulating centers in the brain, which helps the body to cool down and lose excess body heat. While we don't fully understand how acetaminophen works, more research may help us better understand its mechanism of action.

When to interrupt dosage

The prescribed dosage of Darvocet A500 is reliant upon the identified condition, including Pain, Spasm and Inflammation. The amount of dosage fluctuates, depending on the technique of administration as stated in the table beneath.

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

Darvocet A500 has three contraindications and should not be administered together with the circumstances enumerated in the following table.

Darvocet A500 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 Darvocet A500.

Common Darvocet A500 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.

Darvocet A500 Toxicity & Overdose Risk

Acetaminophen has a toxic dose of 338mg/kg in mice and 1944mg/kg in rats. Symptoms of an overdose include kidney damage, hypoglycemia, low blood platelets, and liver damage which can lead to death or the need for a liver transplant. Long term use has been linked to cancer in female rats. Mutagenic effects have been observed in some studies, but the relevance to humans is unknown. Fertility tests have shown no effects, but pregnant and nursing women should exercise caution when taking the drug.

Darvocet A500 Novel Uses: Which Conditions Have a Clinical Trial Featuring Darvocet A500?

698 active clinical trials are currently assessing the utility of Darvocet A500 in treating Chronic Pain, Rheumatoid Arthritis and Allergic Conditions.

Condition

Clinical Trials

Trial Phases

Chronic Pain

118 Actively Recruiting

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

Darvocet A500 Reviews: What are patients saying about Darvocet A500?

5

Patient Review

8/3/2011

Darvocet A500 for Pain

This drug has been around for a while, and it's really helped me manage my chronic back pain. I haven't had any negative side effects from using it long-term.

5

Patient Review

4/6/2010

Darvocet A500 for Pain

I had shoulder surgery and took a drug containing codine that made me really sick. This drug has no side affect and works, but you need to use it every four hours or pain returns and it takes awhile to cut the pain again.

5

Patient Review

12/23/2011

Darvocet A500 for Pain

I'm allergic to most pain medication, but Darvocet was the only thing that helped me. As long as you don't overuse it, it's a great drug.

4.7

Patient Review

3/20/2010

Darvocet A500 for Pain

This was really effective in providing comfort.

4.7

Patient Review

3/5/2009

Darvocet A500 for Pain

4.7

Patient Review

12/16/2009

Darvocet A500 for Pain

While this medication didn't completely remove my pain, it also didn't make me sick like other pain medications have in the past. Not sure what else to do, but my doctor just thinks I want more drugs.

4.7

Patient Review

11/2/2009

Darvocet A500 for Pain

I didn't love this treatment, but it was effective. I didn't like the way it made me feel, though.

4.7

Patient Review

8/16/2010

Darvocet A500 for Pain

I almost never take anything stronger than Tylenol because I'm worried about the side effects, but this weekend my back pain was so bad that I decided to give it a try. It worked really well with hardly any noticeable side effects (just a little drowsiness).

4.3

Patient Review

10/23/2009

Darvocet A500 for Pain

I've been on Darvocet for a while now and haven't experienced any constipation. If you're struggling with this issue, I recommend trying a couple tablespoons of ground flaxseed with breakfast and drinking a few glasses of water each day. It helped me a lot!

3.7

Patient Review

5/12/2009

Darvocet A500 for Pain

3.3

Patient Review

1/3/2010

Darvocet A500 for Pain

The Vicodin didn't help much with my pain, and it made my anxiety levels spike. The Darvocet was a marked improvement in that it helped with the pain while also keeping me calm. I recommend this for anyone struggling with both pain and anxiety.

3

Patient Review

5/16/2009

Darvocet A500 for Pain

3

Patient Review

5/22/2009

Darvocet A500 for Pain

2

Patient Review

4/11/2009

Darvocet A500 for Pain

1.7

Patient Review

10/12/2009

Darvocet A500 for Pain

I generally have had good results with this medication, so long as I stick to the white pills and not the pink generic ones. However, since I started taking B12 vitamins (1500mg), I've been getting headaches constantly and feeling lightheaded sometimes. Not sure what's going on there.

1.7

Patient Review

10/14/2009

Darvocet A500 for Pain

I tried Darvocet instead of Vicodin because I was experiencing extreme nausea. Unfortunately, this led to serious mental side effects that forced me to discontinue use. When I went back to half doses of Vicodin, the results were much better. Overall, I would not recommend using this drug.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about darvocet a500

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

What is Darvocet A500?

"Darvocet A500 is a prescription medicine containing the two active ingredients propoxyphene and acetaminophen. Darvocet A500 is used to relieve mild to moderate pain."

Answered by AI

Did they stop making Darvocet?

"- The FDA has finally banned Darvon, Darvocet and other brand / generic drugs containing propoxyphene, a painkiller with a long history of safety issues."

Answered by AI

Why was Darvocet withdrawn from the market?

"The Food and Drug Administration announced today that propoxyphene, a painkiller, is being taken off the market. This is because the drug has been linked to a deadly heart-rhythm abnormality, even when taken as recommended."

Answered by AI

Clinical Trials for Darvocet A500

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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