Last Updated: June 25, 2026

CLINICAL TRIALS PROFILE FOR ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE


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505(b)(2) Clinical Trials for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
OTC NCT00245375 ↗ A Trial Comparing Combination Therapy of Acetaminophen Plus Ibuprofen Versus Tylenol #3 for the Treatment of Pain After Outpatient Surgery Completed McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc. N/A 2005-01-01 Increasingly in general surgery, the investigators are conducting outpatient day surgery. Ambulatory surgery currently comprises 60 to 70% of surgeries performed in North America. These patients all require some form of analgesia which can be taken at home in the first few days after the surgery. The current standard at the investigators' centre and many others in the maritime provinces is to provide a prescription for oral acetaminophen plus codeine or oxycodone (Tylenol #3®, Percocet ®). Some patients may receive more potent opioids such as oral hydromorphone (Dilaudid®). Unfortunately, the most commonly prescribed medication (Tylenol #3®) is often poorly tolerated by patients, has several undesirable side effects, and may not provide effective pain relief. In the investigators' experience, non-steroidal anti-inflammatory drugs (NSAIDs) are uncommonly a routine addition to the home analgesic regimen. Tylenol #3®, in the investigators' experience and opinion, is a poor post surgical pain medication. They hope to show that a combination of ibuprofen and acetaminophen is better for pain relief after these procedures. The combination of acetaminophen and ibuprofen would be a safe, cheap, and readily available regimen. Unfortunately, as the prescribing practices of surgeons are old habits, it will require a very convincing argument to get them to change their practices. A randomized controlled trial comparing these two regimens, the investigators hope, would be a powerful enough argument. The hypothesis of this study, therefore, is that the pain control provided by a combination of acetaminophen plus ibuprofen (650 mg/400 mg four times per day) will be superior to Tylenol #3® (600 mg acetaminophen/60 mg codeine/15 mg caffeine four times per day). This study will attempt to enroll 150 patients in total. Eligible patients will be identified by their attending surgeon and contacted by study personnel. Patients who enroll in the study will undergo their surgery in the usual manner. After the surgery, in the recovery room, once they are ready to go home, they will be randomized to receive combination A or B and be given a week's worth of pain medication. They will then go home and take this medication as directed. They will record their pain intensity and pain relief once per day using a diary provided in the study package. One week after their surgery, they will return to the hospital clinic and be seen by the study nurse. They will hand over the diary and any unused medication. They will also be asked several questions regarding their overall satisfaction, incidence of side effects, and how long until they were pain free. The risks of participating in this study are minimal from the risks inherent to the procedures and medications the patients would receive within the standard of care. Ibuprofen is a commonly used NSAID which is widely available over the counter and has an established safety profile. The most common adverse effects of ibuprofen and other NSAIDs are gastrointestinal bleeding and ulceration. Other less common adverse effects include nephrotoxicity, hypersensitivity reactions, hepatic dysfunction (longterm use), and cognitive dysfunction. The investigators' patients will be selected to exclude those most at risk for these complications (see exclusion criteria). Acetaminophen has few side effects, with no adverse effects on platelet function and no evidence of gastric irritation.
OTC NCT00245375 ↗ A Trial Comparing Combination Therapy of Acetaminophen Plus Ibuprofen Versus Tylenol #3 for the Treatment of Pain After Outpatient Surgery Completed Nova Scotia Health Authority N/A 2005-01-01 Increasingly in general surgery, the investigators are conducting outpatient day surgery. Ambulatory surgery currently comprises 60 to 70% of surgeries performed in North America. These patients all require some form of analgesia which can be taken at home in the first few days after the surgery. The current standard at the investigators' centre and many others in the maritime provinces is to provide a prescription for oral acetaminophen plus codeine or oxycodone (Tylenol #3®, Percocet ®). Some patients may receive more potent opioids such as oral hydromorphone (Dilaudid®). Unfortunately, the most commonly prescribed medication (Tylenol #3®) is often poorly tolerated by patients, has several undesirable side effects, and may not provide effective pain relief. In the investigators' experience, non-steroidal anti-inflammatory drugs (NSAIDs) are uncommonly a routine addition to the home analgesic regimen. Tylenol #3®, in the investigators' experience and opinion, is a poor post surgical pain medication. They hope to show that a combination of ibuprofen and acetaminophen is better for pain relief after these procedures. The combination of acetaminophen and ibuprofen would be a safe, cheap, and readily available regimen. Unfortunately, as the prescribing practices of surgeons are old habits, it will require a very convincing argument to get them to change their practices. A randomized controlled trial comparing these two regimens, the investigators hope, would be a powerful enough argument. The hypothesis of this study, therefore, is that the pain control provided by a combination of acetaminophen plus ibuprofen (650 mg/400 mg four times per day) will be superior to Tylenol #3® (600 mg acetaminophen/60 mg codeine/15 mg caffeine four times per day). This study will attempt to enroll 150 patients in total. Eligible patients will be identified by their attending surgeon and contacted by study personnel. Patients who enroll in the study will undergo their surgery in the usual manner. After the surgery, in the recovery room, once they are ready to go home, they will be randomized to receive combination A or B and be given a week's worth of pain medication. They will then go home and take this medication as directed. They will record their pain intensity and pain relief once per day using a diary provided in the study package. One week after their surgery, they will return to the hospital clinic and be seen by the study nurse. They will hand over the diary and any unused medication. They will also be asked several questions regarding their overall satisfaction, incidence of side effects, and how long until they were pain free. The risks of participating in this study are minimal from the risks inherent to the procedures and medications the patients would receive within the standard of care. Ibuprofen is a commonly used NSAID which is widely available over the counter and has an established safety profile. The most common adverse effects of ibuprofen and other NSAIDs are gastrointestinal bleeding and ulceration. Other less common adverse effects include nephrotoxicity, hypersensitivity reactions, hepatic dysfunction (longterm use), and cognitive dysfunction. The investigators' patients will be selected to exclude those most at risk for these complications (see exclusion criteria). Acetaminophen has few side effects, with no adverse effects on platelet function and no evidence of gastric irritation.
OTC NCT01588158 ↗ Patient Satisfaction With Pain Relief After Ambulatory Hand Surgery Terminated Massachusetts General Hospital Phase 4 2012-07-01 Adequate pain relief has been a priority of the Joint Commission and is featured on national inpatient surveys such as the H-CAHPS. When considering methods for improving satisfaction with pain relief in the United States, a great deal of emphasis has been placed on opioid pain medications. Some of this emphasis on opioid pain medication is driven by the pharmaceutical industry and by advocacy groups with ties to the pharmaceutical industry. There is evidence that the "pain is the fifth vital sign" campaign of the Joint Commission led to an increased incidence of prescription of opioids, but there is less evidence of improved satisfaction with pain relief. There is some evidence of an increase in opioid-related adverse events. As the sales of opioids have tripled from 1999-2008, so has the number of deaths caused by opioid overdose; 14,800 in 2008. The number of visits to the Emergency Department for opioid overdose doubled between 2004 and 2008. Patients in other countries take far less opioid pain medication and are equally satisfied with pain relief. For instance, Lindenhovius et al. found in a retrospective study that Dutch patients take a weak (Tramadol) or no opioid pain medication after ankle fracture surgery and have comparable or better satisfaction with pain relief than American patients, most of whom take oxycodone. That study was repeated prospectively (unpublished) and confirmed that Dutch patients do not feel their pain is undertreated. A study of morphine use after a femur fracture demonstrated that American patients used far more than Vietnamese patients (30 mg/kg versus 0.9 mg/kg), but were more dissatisfied with their pain relief. These sociological differences are striking and suggest strongly that personal factors may be the most important determinant of satisfaction with pain relief. It is our impression that most American hand surgeons give patients a prescription for an opioid pain medication after carpal tunnel release, and that is certainly true in our practice. This seems to be based primarily on the outliers, and intended to avoid confrontation with patients that desire opioids; however, most patients take little or no narcotic pain medication, and many who do use the opioids complain of the side effects-nausea and pruritis in particular. It is therefore not clear whether routine opioids is the optimal pain management strategy after carpal tunnel release. In the study of Stahl et al. from Israel, patients were prescribed acetaminophen rather than opioids after carpal tunnel release and only 20 of 50 patients used acetaminophen; 30 patients did not use acetaminophen or other pain medication at all after the operation. Our aim is to determine if there is a difference in satisfaction with pain relief between patients advised to take opioids compared to patients advised to use over the counter acetaminophen after carpal tunnel release under local anesthesia. A secondary aim is to determine if personal factors account for more of the variability in satisfaction with pain relief than opioid strategy.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00092313 ↗ A Study of Two Approved Drugs in the Treatment of Postoperative Dental Pain (0966-182) Completed Merck Sharp & Dohme Corp. Phase 3 2002-06-01 The purpose of this study is to compare the safety and effectiveness of two approved drugs in the treatment of pain following dental surgery.
NCT00092326 ↗ A Study of Two Approved Drugs in the Treatment of Postoperative Dental Pain (0966-183) Completed Merck Sharp & Dohme Corp. Phase 3 2002-06-01 The purpose of this study is to compare the safety and effectiveness of two approved drugs in the treatment of pain following dental surgery.
NCT00245375 ↗ A Trial Comparing Combination Therapy of Acetaminophen Plus Ibuprofen Versus Tylenol #3 for the Treatment of Pain After Outpatient Surgery Completed McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc. N/A 2005-01-01 Increasingly in general surgery, the investigators are conducting outpatient day surgery. Ambulatory surgery currently comprises 60 to 70% of surgeries performed in North America. These patients all require some form of analgesia which can be taken at home in the first few days after the surgery. The current standard at the investigators' centre and many others in the maritime provinces is to provide a prescription for oral acetaminophen plus codeine or oxycodone (Tylenol #3®, Percocet ®). Some patients may receive more potent opioids such as oral hydromorphone (Dilaudid®). Unfortunately, the most commonly prescribed medication (Tylenol #3®) is often poorly tolerated by patients, has several undesirable side effects, and may not provide effective pain relief. In the investigators' experience, non-steroidal anti-inflammatory drugs (NSAIDs) are uncommonly a routine addition to the home analgesic regimen. Tylenol #3®, in the investigators' experience and opinion, is a poor post surgical pain medication. They hope to show that a combination of ibuprofen and acetaminophen is better for pain relief after these procedures. The combination of acetaminophen and ibuprofen would be a safe, cheap, and readily available regimen. Unfortunately, as the prescribing practices of surgeons are old habits, it will require a very convincing argument to get them to change their practices. A randomized controlled trial comparing these two regimens, the investigators hope, would be a powerful enough argument. The hypothesis of this study, therefore, is that the pain control provided by a combination of acetaminophen plus ibuprofen (650 mg/400 mg four times per day) will be superior to Tylenol #3® (600 mg acetaminophen/60 mg codeine/15 mg caffeine four times per day). This study will attempt to enroll 150 patients in total. Eligible patients will be identified by their attending surgeon and contacted by study personnel. Patients who enroll in the study will undergo their surgery in the usual manner. After the surgery, in the recovery room, once they are ready to go home, they will be randomized to receive combination A or B and be given a week's worth of pain medication. They will then go home and take this medication as directed. They will record their pain intensity and pain relief once per day using a diary provided in the study package. One week after their surgery, they will return to the hospital clinic and be seen by the study nurse. They will hand over the diary and any unused medication. They will also be asked several questions regarding their overall satisfaction, incidence of side effects, and how long until they were pain free. The risks of participating in this study are minimal from the risks inherent to the procedures and medications the patients would receive within the standard of care. Ibuprofen is a commonly used NSAID which is widely available over the counter and has an established safety profile. The most common adverse effects of ibuprofen and other NSAIDs are gastrointestinal bleeding and ulceration. Other less common adverse effects include nephrotoxicity, hypersensitivity reactions, hepatic dysfunction (longterm use), and cognitive dysfunction. The investigators' patients will be selected to exclude those most at risk for these complications (see exclusion criteria). Acetaminophen has few side effects, with no adverse effects on platelet function and no evidence of gastric irritation.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

Condition Name

Condition Name for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Intervention Trials
Pain, Postoperative 25
Pain 17
Postoperative Pain 15
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Condition MeSH

Condition MeSH for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Intervention Trials
Pain, Postoperative 63
Acute Pain 13
Fractures, Bone 9
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Clinical Trial Locations for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

Trials by Country

Trials by Country for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Location Trials
United States 280
Canada 16
China 3
Puerto Rico 2
Belgium 1
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Trials by US State

Trials by US State for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Location Trials
New York 31
California 27
Pennsylvania 18
Texas 14
North Carolina 12
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Clinical Trial Progress for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

Clinical Trial Phase

Clinical Trial Phase for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Clinical Trial Phase Trials
PHASE4 4
PHASE3 5
PHASE2 3
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Clinical Trial Status

Clinical Trial Status for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Clinical Trial Phase Trials
Completed 60
Recruiting 29
Terminated 19
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Clinical Trial Sponsors for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

Sponsor Name

Sponsor Name for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Sponsor Trials
Montefiore Medical Center 8
Purdue Pharma LP 7
University of California, Los Angeles 7
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Sponsor Type

Sponsor Type for ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE
Sponsor Trials
Other 167
Industry 38
U.S. Fed 3
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Last updated: April 28, 2026

Acetaminophen + Oxycodone Hydrochloride: Clinical Trials Update, Market Analysis, and 2030 Projection

What is the current clinical trials landscape for acetaminophen + oxycodone hydrochloride?

No complete, cross-trial, current-period clinical trials picture can be produced from the information provided. The request requires a fresh, trial-level update (study identifiers, phases, enrollment status, results, and timelines) and a market forecast that ties to that pipeline. Without trial registration data, company filings, and up-to-date endpoints, a complete and accurate response is not possible.


How big is the market for acetaminophen + oxycodone hydrochloride, and what is the demand driver mix?

No complete, market-sized, forecast-ready analysis can be produced from the information provided. A credible market view for this specific combination product requires:

  • Defined geography (US only vs. ex-US vs. global)
  • Specific product scope (immediate-release vs extended-release fixed-dose combination, branded vs authorized generics)
  • Evidence base (sales by compound and combination, payer coverage, tender dynamics, opioid-use policy effects)

Without those inputs, any market number or projection would be non-actionable and not verifiably grounded to the underlying product category.


What is the 2030 market projection (and what assumptions would govern it)?

A 2030 projection requires explicit assumptions that typically hinge on regulatory and payer constraints (opioid prescribing controls), competitive entry/exit (generic uptake), and label or formulation changes (e.g., abuse-deterrent strategies). Those drivers must be tied to observed sales and pipeline milestones to be credible. The information provided does not include those data.


Actionable implications for R&D and investment decisions

The combination acetaminophen + oxycodone sits in a highly regulated opioid class. Real-world demand is influenced by:

  • Opioid prescribing restrictions, risk-mitigation programs, and payer prior authorization rules
  • Generic erosion dynamics for fixed-dose combinations
  • Ongoing platform shifts toward lower abuse potential formulations and alternative analgesic classes
  • Safety and tolerability narratives that can affect formulary placement and uptake

A decision-grade recommendation on development strategy, geographies, and timing cannot be completed without current trial and market evidence for this specific combination product.


Key Takeaways

  • A complete clinical trials update and a 2030 market projection for acetaminophen + oxycodone hydrochloride cannot be produced from the information provided.
  • Decision-grade market and pipeline analysis requires trial-level registration detail and market scope definitions tied to the exact fixed-dose combination products.
  • R&D and investment implications for this opioid combination are dominated by regulatory and payer constraints plus generic and formulation competitive pressure.

FAQs

1) Does acetaminophen + oxycodone face a higher regulatory risk than single-ingredient opioids?

The regulatory and payer scrutiny on fixed-dose opioid combinations is typically elevated due to class-wide opioid risk controls and combination-specific safety considerations. A decision-grade assessment requires current label and policy mapping for the exact marketed product.

2) Are most current sales driven by branded or generic fixed-dose combinations?

Fixed-dose opioid combination markets often shift quickly toward authorized generics depending on local regulatory pathways. A verified split requires current sales-by-brand data for the specific combination strength and release form.

3) What trial endpoints most affect adoption for this combination?

Endpoints that map to prescribing and formulary behavior include pain intensity responder rates, time-to-effect, functional outcomes, and safety signals tied to opioid class risks. Adoption also depends on sponsor-reported risk mitigation performance.

4) How do opioid-use policies change near-term demand?

Policy changes can reduce eligible patient volumes through tighter prescribing rules and payer edits. The effect magnitude depends on geography, payer mix, and prescriber compliance behavior.

5) Which product features most influence payer coverage?

Formulation attributes that support misuse reduction, tolerability, and clear risk messaging can influence coverage decisions. Coverage also depends on pricing, contract status, and therapeutic interchange rules.


References

[1] No sources were provided in the prompt.

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