Roxicet

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Roxicet

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Treatment option: Pain

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Roxicet

Property Description
Active Ingredients Oxycodone Hydrochloride, Acetaminophen
Form Immediate-release oral tablet
Pharmacological Class Narcotic Analgesic Combination
Common Purpose Relief of moderate to severe pain
Origin Semi-synthetic

What Type of Medicine Is Roxicet?

Roxicet is a prescription-only combination analgesic classified pharmacologically as a Narcotic Analgesic Combination. It is a fixed-dose drug entity provided as an immediate-release oral tablet designed for oral administration. This pharmacological classification distinguishes it from single-ingredient pain relievers, as it deliberately leverages two distinct types of medication to achieve a more potent effect. The medicine is classified as having a semi-synthetic origin because its opioid component, Oxycodone, is derived from the naturally occurring opium alkaloid Thebaine. Its design as an immediate-release tablet ensures a rapid onset of action, a property that is clinically recognized for providing timely relief in acute pain scenarios.


Roxicet's Core Composition and General Purpose

The medication is defined by its two primary active ingredients: Oxycodone Hydrochloride and Acetaminophen (often abbreviated as APAP or N-acetyl-p-aminophenol). Oxycodone functions as a semi-synthetic opioid agonist, and Acetaminophen is a distinct non-opioid analgesic. The primary purpose of combining these two agents is to achieve superior analgesia by targeting pain through two separate physiological pathways simultaneously, which is more effective than either component alone. The combination of these agents is specifically utilized to provide robust, fast-acting pain relief, generally applied to discomfort that is categorized as moderate to severe. This formulation is often used in situations such as managing post-surgical pain, where intense, short-term relief is necessary.

What side effects are possible with Roxicet ?

Possible side effects and safety information

The official safety profile for Roxicet, a combination of Oxycodone and Acetaminophen, is governed by classifications and statements documented in governmental regulatory labeling.

Common and Systemic Reactions

Adverse reactions classified as Common in regulatory documents often include effects on the Central Nervous System (CNS) and Gastrointestinal system. These frequently reported effects include nausea, constipation, dizziness, sedation, vomiting, and pruritus (itching). These reactions are sometimes noted to be more prominent during the initial phase of administration.

  • System-Organ Classes Involved: The documented effects are grouped under categories such as Gastrointestinal Disorders, Nervous System Disorders, Skin and Subcutaneous Tissue Disorders, and Hepatobiliary Disorders.

Serious Safety Concerns

Regulatory labeling highlights specific, serious risks associated with the medicine's components:

  • Life-Threatening Respiratory Depression: A critical risk primarily associated with the oxycodone component.
  • Hepatotoxicity: The acetaminophen component carries a documented risk of Acute Liver Failure.
  • Dependence and Tolerance: Psychic dependence, physical dependence, and tolerance are officially noted safety characteristics associated with long-term administration.

Population-Specific Safety Statements

Safety characteristics are specifically addressed for certain groups in official labeling. For example, older adults may face increased sensitivity to adverse effects, including respiratory depression. Patients with hepatic impairment are officially noted to have an increased risk of hepatotoxicity. Official documents also confirm that safety and effectiveness have not been established in pediatric patients.

Safety Restrictions

High-level safety constraints documented in the prescribing information include contraindications for individuals with known hypersensitivity to either component, significant respiratory depression, or certain forms of gastrointestinal obstruction.

Overdose and Emergency Response

Overdose and When to Seek Help

The official overdose profile for this combination medicine is defined by the toxic effects of its two components, Oxycodone and Acetaminophen, as documented in government regulatory sources. Overdosage is considered a life-threatening emergency that requires immediate medical attention.

Documented Overdose Manifestations

Component Primary Manifestations
Oxycodone Respiratory depression, extreme somnolence progressing to coma, skeletal muscle flaccidity, bradycardia, and hypotension.
Acetaminophen Early signs include nausea, vomiting, and diaphoresis. The most severe outcome is fatal hepatic necrosis, which may present as late as 48 to 72 hours after ingestion.

Required Emergency Actions

Regulatory documentation mandates that individuals must seek immediate emergency medical care or contact a poison control center immediately upon a suspected overdose. The most severe outcomes include respiratory arrest, circulatory collapse, and death. The treatment involves supportive measures and the administration of specific antidotes: Naloxone for the opioid toxicity and N-acetylcysteine for the Acetaminophen toxicity. Prolonged observation and monitoring of liver function studies are also officially required.

Therapeutic Uses of Roxicet

Roxicet (Oxycodone and Acetaminophen) is commonly used for the symptomatic relief of pain that presents with significant discomfort and is commonly managed with an opioid component. Its intended use is for situations where symptomatic relief requires additional support. The medication is commonly used to help manage symptoms associated with moderate to severe discomfort, often applied in clinical settings for conditions such as post-surgical pain, pain following trauma, and episodes of acute pain flares.


Symptom Relief and Clinical Support

This medication assists with easing discomfort during periods of heightened symptoms by addressing intense, uncontrolled bodily discomfort. It is applied across domains where additional symptomatic support is needed when symptoms interfere with routine activities. The combination also assists with preserving a sense of stability when discomfort is accompanied by a systemic fever. This medication contributes to easing the overall symptom load during phases of increased distress or discomfort.


Quick Fact

Quick Fact: Symptomatic Support for Severe Discomfort

The formulation is considered relevant for use across domains where additional symptomatic support is needed, supporting patients with coping more steadily with symptom fluctuations.

Eligibility and Restrictions for Use

Who Can and Cannot Use Roxicet? (Eligibility Profile)

Roxicet (oxycodone/acetaminophen) eligibility is strictly defined by regulatory guidelines based on absolute contraindications and patient-specific risks, primarily due to the opioid component.


Absolute Contraindications (Must Not Use)

Classification Condition or Population
Allergy Known hypersensitivity to oxycodone, acetaminophen, or any product component.
Respiratory Significant respiratory depression or acute/severe bronchial asthma in an unmonitored setting.
Gastrointestinal Known or suspected gastrointestinal obstruction, including paralytic ileus.

Special Populations and Conditional Use

Official regulatory information requires special caution or restriction for specific groups:

  • Pediatric Patients: Safety and effectiveness have not been established in pediatric patients.
  • Pregnancy: Prolonged use during pregnancy may result in Neonatal Opioid Withdrawal Syndrome.
  • Lactation: Use is generally not recommended due to the risk of serious adverse reactions (sedation, respiratory depression) in the breastfed infant.
  • Organ Impairment: Patients with severe hepatic or renal impairment require close monitoring and caution.
  • Elderly or Debilitated Patients: These patients are at increased risk of respiratory depression and require cautious use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory documentation for Roxicet (oxycodone and acetaminophen) identifies several categories of medicines and substances that interact with the product, primarily due to the oxycodone component.


Interacting Medicinal Product Categories

Category Interaction Basis & Restriction
Central Nervous System (CNS) Depressants (e.g., alcohol, sedatives, tranquilizers, general anesthetics) Risk of additive CNS depression leading to profound sedation, respiratory depression, coma, and death. Reserve concomitant use for when alternatives are inadequate, and limit dosage/duration.
CYP3A4 Inhibitors (e.g., certain macrolide antibiotics, azole-antifungals) Pharmacokinetic interaction leading to increased oxycodone plasma concentrations, which can cause prolonged adverse reactions and potentially fatal respiratory depression. Closely monitor for sedation and respiratory depression.
CYP3A4 Inducers (e.g., certain anticonvulsants, rifampin) Pharmacokinetic interaction leading to decreased oxycodone plasma concentrations, which may result in reduced efficacy or the precipitation of opioid withdrawal symptoms.
Monoamine Oxidase Inhibitors (MAOIs) Concomitant use is not recommended or avoided. This restriction also applies for 14 days after stopping an MAOI.
Mixed Agonist/Antagonist or Partial Agonist Opioids (e.g., butorphanol, nalbuphine) Avoid use, as they may reduce the analgesic effect of Roxicet or precipitate withdrawal symptoms.
Serotonergic Drugs (e.g., SSRIs, SNRIs) Concomitant use may result in the life-threatening condition Serotonin Syndrome. Discontinue Roxicet if this is suspected.

Additional Constraints

The concurrent use of anticholinergics with Roxicet may lead to paralytic ileus. Furthermore, caution is advised with other medications and substances, including tricyclic antidepressants and grapefruit juice, which may alter effects or metabolism. The regulatory structure emphasizes that combination therapy with CNS depressants must be limited to the minimum necessary and requires frequent patient evaluation.

Mechanism of Action

How Roxicet Works: Mechanism of Action

Roxicet is a combination agent that works through two distinct, complementary mechanisms, primarily within the central nervous system ( CNS), to modulate the processing and transmission of nociceptive signals.

Direct Interception via mu-Opioid Receptor Agonism

The oxycodone component binds as an agonist to mu-opioid receptors, predominantly in the brain and spinal cord. This action initiates a cascade that hyperpolarizes neurons and reduces the release of nociceptive neurotransmitters. The resulting physiological effect is the inhibition of ascending nociceptive signaling and CNS depression, which modifies central sensory processing.

Central Modulation of Pain Thresholds

The acetaminophen component primarily acts via the inhibition of CNS cyclooxygenase ( COX) enzymes and subsequent reduction of Prostaglandin E2 ( PGE2) synthesis. This mechanism raises the body's pain threshold and helps normalize hypothalamic temperature regulation, contributing a distinct non-opioid pathway and producing antipyresis (the physiological process of reducing body temperature).

Dual-Pathway CNS Dampening

The combination of these two distinct mechanisms results in cooperative modulation of central pain pathways. By simultaneously blocking nociceptive signal transmission (oxycodone) and modulating sensitivity thresholds (acetaminophen), the drug provides a broad dampening of nociceptive signaling within the CNS, which shapes the drug's overall mechanistic effect profile.

Dosage and Administration Information

Official Administration Guidelines for Roxicet

Roxicet (Oxycodone and Acetaminophen) is utilized based on strictly defined instructions and established protocols, focusing on individualized oral administration and adherence to specific dosing limits.


Dosing and Frequency

Administration of Roxicet is via the oral route, using the immediate-release tablet form. Dosing is highly individualized by the prescriber, determined by the patient's specific needs for relief, but generally begins at the lowest effective amount, such as one tablet of the 5 mg/ 325 mg strength or equivalent.

  • The medication is taken as needed for pain, with a standard maximum frequency of every 6 hours.
  • It can be administered with or without food.
  • A critical administration rule dictates that the total intake of acetaminophen from all sources (including Roxicet) must not exceed 4,000 mg in a 24-hour period.

Procedural Constraints and Duration

Use of Roxicet is governed by the shortest duration principle, meaning it is administered only for the time necessary to address the patient's condition, often involving intermittent use for acute scenarios. The tablet must be swallowed whole and should not be crushed.

Specific adjustments to the standard regimen may be necessary for certain populations. For example, in older adults, dosing often starts at the lower end of the range. Furthermore, patients with severe hepatic (liver) impairment or end-stage renal disease typically require a reduction in dose to account for altered drug elimination. Adherence to these guidelines helps define the structure for proper use.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Roxicet

This overview describes the types of clinical research that have been conducted for the fixed-dose combination of oxycodone and acetaminophen, detailing what has been studied and what remains an area of active research.


Evidence for Use in Moderate to Severe Acute Pain

The core evidence related to the core approved indication comes from short-term, single-dose Randomized Controlled Trials (RCTs). These studies focused on populations experiencing intense, short-term pain, such as following surgical procedures. Researchers compared the combination drug against an inactive placebo and against its two components taken separately.

Studies monitored patient-reported outcomes describing perceived discomfort and the time until individuals requested additional pain medication. Findings describe patterns observed in the studies where the combination was compared to placebo, with studies reporting measured differences in pain relief scales and the duration of the analgesic effect.

Research provides limited insight into the analgesic experience beyond the first 4 to 12 hours after administration; information on the broader recovery period is still emerging.


Evidence for Use in Moderate to Severe Chronic Pain

Research has also explored the use of this combination in patients with conditions characterized by fluctuating manifestations of pain that persist over long periods. Studies for this indication involve RCTs of intermediate duration and observational studies.

Research examined outcomes related to physical discomfort and outcomes reflecting daily functioning in adults with chronic conditions. Studies reported how symptoms evolved in the observed populations, and research describes measured changes in pain relief and function during continued use in some cohorts. These results apply only to the populations studied; generalizability to the general chronic pain community is uncertain.


What is Still Uncertain in the Research Record

Follow-up durations were limited in the most rigorous studies, meaning the long-term clinical course is not fully established, particularly in chronic conditions. Comparative evidence is lacking when assessing the combination against a comprehensive range of other available non-opioid treatments. Data for certain groups, such as older adults or those with comorbid conditions, remain insufficient.

Frequently Asked Questions (FAQ)

Common questions about Roxicet (FAQ)

Q: How is Roxicet different from just taking acetaminophen?

Roxicet is a combination product that contains two active ingredients: the non-opioid pain reliever acetaminophen and the opioid pain reliever oxycodone. Official documents describe the combination as providing pain relief through two separate mechanisms simultaneously. The dual action is described as providing pain relief that differs from that of acetaminophen alone.


Q: Is Roxicet used for long-term or short-term pain relief?

Regulatory documents emphasize the shortest duration principle, meaning the medicine should be used only for the time necessary to treat the condition. Official administration guidelines limit the use of this medicine to the shortest duration necessary, often for acute pain.


Q: How long does it typically take for Roxicet to start working?

Roxicet is formulated as an immediate-release oral tablet. This design is recognized for providing timely relief in acute pain settings. This means the onset of action is typically rapid after the tablet is swallowed.


Q: What is the usual duration of Roxicet's pain-relieving effects?

Official administration instructions detail that the medication is taken as needed for pain. The information regarding the duration of effect is based on a standard maximum administration frequency of typically every 6 hours.


Q: Can the drug cause constipation, and is this common?

Constipation is listed in regulatory documents as a Common adverse reaction. This effect is specifically associated with the oxycodone component, which works within the body to reduce motility in the gastrointestinal tract.


Q: What are official documents saying about Roxicet use during pregnancy?

Regulatory documents state that prolonged use of opioids, including the oxycodone component of Roxicet, during pregnancy may result in Neonatal Opioid Withdrawal Syndrome in the newborn. Use during pregnancy is subject to specific caution described in regulatory documents.


Q: Can Roxicet be taken by people with a history of alcohol use disorder?

Official documents note that a patient’s personal or family history of substance abuse is a risk factor that should be assessed before the drug is used. The risks associated with Roxicet are noted to be increased in patients with a history of substance abuse, including alcohol.


Q: Does Roxicet affect a person's ability to drive or operate machinery?

Regulatory documents list central nervous system ( CNS) effects such as dizziness and sedation as common adverse reactions. These effects may impair the mental and physical ability required for tasks like driving or operating machinery, according to official information.


Q: What does 'opioid-naïve' mean when discussing Roxicet?

The term 'opioid-naïve' refers to a patient who has not previously been exposed to opioid medication. Regulatory guidelines advise that initial dosing for all patients should start at the lowest effective amount, which is especially important for those who are opioid-naïve.


Q: What is the official classification of Roxicet by the DEA or other regulators?

Roxicet is classified by the United States Drug Enforcement Administration ( DEA) as a Schedule II controlled substance. This classification is assigned because the drug has a documented high potential for abuse, requiring strict controls for prescribing and dispensing.


Q: What is the meaning of the 'Black Box Warning' described for this drug?

The Black Box Warning (or Boxed Warning) is the strictest safety warning the Food and Drug Administration ( FDA) assigns to prescription medicines. It serves to highlight the drug’s most serious, potentially life-threatening risks, such as addiction, abuse, misuse, and severe respiratory depression.


Q: Is Roxicet the same drug as Percocet or Tylox?

Roxicet, Percocet, and Tylox are all brand names for prescription medications that contain the same two active ingredients: oxycodone and acetaminophen. While the active components are identical, the specific strength or formulation may vary between different brand-name products.


Q: What are the symptoms of an allergic reaction to Roxicet?

Official safety information lists symptoms of hypersensitivity (allergic reaction) to the drug’s components. These documented symptoms may include skin rash, itching, hives, or swelling of the face, lips, tongue, or throat.


Q: How do regulators describe the purpose of the oxycodone ingredient?

The oxycodone component is classified as a pure opioid agonist whose principal therapeutic action is analgesia (pain relief). According to regulatory documents, it works within the central nervous system ( CNS) to modify how pain signals are processed and transmitted.


Q: What are the potential interactions with herbal supplements?

Official patient information advises telling a healthcare provider about all non-prescription and herbal products being taken. Specific herbal supplements are noted to have the potential to interact with oxycodone combination products.


Q: Is it documented that Roxicet can cause problems with sleep?

Yes, official documents on adverse reactions list CNS effects that may include both sedation (drowsiness) and, less commonly, issues such as trouble sleeping (insomnia). These effects are documented as potential responses to the medication.


Q: Are there official descriptions of how long Roxicet stays in the body?

Official pharmacokinetic data indicate how the drug is processed in the body. The half-life for the immediate-release oxycodone component is documented as being approximately 3 to 5 hours. The half-life is the time required for the concentration of the drug in the body to reduce by half.


Q: What patient groups are described as being more sensitive to the effects of Roxicet?

Official labeling identifies certain patient groups at increased risk of adverse effects. These include older adults and patients who are debilitated or have severe hepatic (liver) or renal (kidney) impairment. These groups are identified as requiring caution.


Q: Why is Roxicet not recommended for children, according to regulatory documents?

Regulatory documents state that the safety and effectiveness have not been established in pediatric patients. There is also a severe risk of life-threatening respiratory depression and the fatal risk associated with accidental ingestion by children.


Q: Can Roxicet be taken by people with kidney problems?

Patients with renal (kidney) impairment are officially identified as requiring caution. Regulatory guidelines state that these patients are identified as requiring careful dose consideration to account for the altered elimination of the medication from the body.


Q: Is it required to take Roxicet with food or on an empty stomach?

No, official administration guidelines state that Roxicet can be taken with or without food. Taking it with food is not a mandatory requirement for the medication to work as intended.


Q: Why do some people report feeling drowsy or dizzy after taking Roxicet?

The oxycodone component is classified as a mu-opioid receptor agonist that causes CNS depression (slowing down of brain activity). Regulatory documents explain that this CNS depression is the basis for commonly reported effects like sedation (drowsiness) and dizziness.


Q: What are the non-pain-related effects that are sometimes reported with Roxicet?

In addition to pain relief, the opioid component can produce other effects due to its action on the central nervous system. These documented non-pain-related effects can include feelings of anxiolysis (anxiety reduction), euphoria or relaxation, and cough suppression.


Q: What official information is available regarding combining Roxicet with muscle relaxants?

Official documents warn that the concomitant use of Roxicet with skeletal muscle relaxants may result in additive CNS depression. This combined effect significantly increases the risk of severe sedation and respiratory depression.


Q: What does 'analgesic' mean in the context of Roxicet?

The term 'analgesic' is used in regulatory documents to classify a substance whose primary action is to relieve or reduce pain. Roxicet is classified as an analgesic combination because it combines two active ingredients for this purpose.

How should Roxicet be stored and disposed of?

Official Storage and Handling

Roxicet (oxycodone and acetaminophen) tablets must be stored at controlled room temperature, which is defined by regulatory agencies as 20 C to 25 C (68 F to 77 F). The product's stability is maintained within this temperature range, with permitted excursions between 15 C and 30 C (59 F and 86 F). The tablets must be stored in a tightly closed, light-resistant container and protected from excessive heat and moisture.

Child Safety and Disposal

Due to the presence of an opioid component, it is mandatory to store Roxicet securely and out of the reach of children and pets. For disposal of unused or expired tablets, the official governmental guidance recommends using a drug take-back program or an authorized collection site. If these options are unavailable, the medication should be mixed with an undesirable substance (such as dirt or coffee grounds), sealed in a bag or container, and placed in the household trash, following the procedures outlined by the FDA.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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