Vicodin ES

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Vicodin ES

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Vicodin ES

Property Description
Active Ingredients Hydrocodone bitartrate, Acetaminophen
Form Oral tablet
Pharmacological Class Opioid-Nonopioid Combination Analgesic
Common Use Management of moderate to severe pain
Origin Synthetic

Defining Vicodin ES: A Fixed-Dose Combination Analgesic

Vicodin ES is a prescription-only oral tablet classified as a fixed-dose combination analgesic, specifically designed to address pain that is moderate to severe. It belongs to the opioid-nonopioid combination drug class, containing two distinct active components in a single dosage unit. The letters 'ES' associated with the name often denote an Extra Strength or maximum strength formulation, a characteristic differentiating it from standard formulations. This type of product is categorized as a narcotic analgesic combination. This structural design is clinically recognized for its application in pain management requiring comprehensive intervention.


What is Vicodin ES Composed of? Hydrocodone and Acetaminophen

The two active ingredients in this synthetic medicine are Hydrocodone bitartrate and Acetaminophen (known internationally as Paracetamol). Hydrocodone bitartrate is the semi-synthetic opioid analgesic component, while Acetaminophen is the non-opioid analgesic component. This specific pairing is one of several widely used fixed-dose opioid combinations. The combination utilizes a dual-action approach—one component centrally acting and one peripherally acting—to achieve superior pain relief compared to either agent alone. Combining these two agents provides enhanced therapeutic benefits. The use of two distinct ingredients achieves a synergistic effect, meaning their combined analgesic power exceeds the simple sum of their individual effects.


General Purpose: Relieving Moderate to Severe Pain

The general therapeutic purpose of this Hydrocodone and Acetaminophen combination is the management of moderate to severe pain. This capability makes it suitable for typical use scenarios, such as managing significant pain following a surgical procedure or injury, when non-opioid treatments are inadequate. The combined mechanism of action—targeting both the brain's perception of pain and the body's local pain signaling—provides powerful antinociception (pain-blocking). This capability allows the medicine to effectively alleviate significant or sustained discomfort, establishing its role as an analgesic for pronounced pain.

What side effects are possible with Vicodin ES?

Possible Side Effects and Safety Information

The safety profile of the hydrocodone and acetaminophen combination product is defined by adverse reactions classified into several body systems. The most frequently reported adverse reactions are related to the Central Nervous System and Gastrointestinal System.


Most Frequently Reported Adverse Reactions

Adverse reactions that are commonly reported in regulatory documents include:

  • Central Nervous System (CNS) Effects: Dizziness, Sedation, Lightheadedness, Drowsiness.
  • Gastrointestinal Effects: Nausea and Vomiting.

These reactions are noted to be more prominent in ambulatory than in nonambulatory patients. Effects such as constipation and the development of physical dependence and tolerance are associated with prolonged administration.


Serious Adverse Reactions

Official regulatory documents emphasize the risk of rare but serious adverse reactions, which include:

  • Acute Liver Failure (Hepatotoxicity): The acetaminophen component has been associated with cases of acute liver failure, and the risk is increased with doses exceeding the maximum recommended daily limit.
  • Life-Threatening Respiratory Depression: This serious risk, related to the opioid component, is greatest during the initiation of therapy or following a dose increase.
  • Serious Skin Reactions: Rare but severe dermatological events, such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), have been documented.

Population-Specific Safety Considerations

The medicine is subject to specific safety constraints for certain patient groups. Caution is required in older adults due to increased sensitivity to opioid effects. Patients with hepatic impairment face an increased risk of liver damage from acetaminophen, and those with renal impairment require caution because the components and their metabolites are excreted by the kidney. Furthermore, prolonged use during pregnancy can result in Neonatal Opioid Withdrawal Syndrome in the newborn.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Vicodin ES overdose addresses the distinct toxicities of both the Hydrocodone and Acetaminophen components.

Documented Manifestations Overdose may present with symptoms of acute opioid toxicity, including respiratory depression, extreme somnolence progressing to stupor or coma, and miosis. Concurrently, manifestations of acute hepatic toxicity are documented, which initially include nausea, vomiting, diaphoresis, and malaise, potentially progressing to signs of acute liver failure.

Severe Outcomes and Emergency Actions Regulatory documents state that severe overdosage can lead to life-threatening outcomes, such as apnea, circulatory collapse, cardiac arrest, acute liver failure, and death. Immediate medical help must be sought right away upon any suspicion of overdose. The mandated response is to contact emergency services immediately due to the severity of documented complications.

Management and Considerations Official management protocols involve specific antidotes. An opioid antagonist is described for reversing hydrocodone toxicity, and N-acetylcysteine is used for acetaminophen toxicity. Supportive and symptomatic treatment, alongside close observation, is required. Regulatory notes indicate that elderly patients may be at increased risk for exaggerated respiratory depressant effects during overdosage.

Therapeutic Uses of Vicodin ES

What Vicodin ES Treats: Main Uses and Benefits

Vicodin ES is generally considered relevant for addressing symptoms related to moderate to severe pain, which often create noticeable physiological strain and interfere with daily functioning. The combination product is applied in addressing symptoms related to pain that is classified as moderate to moderately severe.

The medication is commonly used to help with symptom clusters that may become intense or disruptive, providing support that may help ease the overall symptom burden. It is relevant in contexts where short-term symptomatic assistance may be appropriate, such as managing postoperative discomfort, pain following a significant injury, or intense, episodic breakthrough pain.


Treatment of Acute and Sustained Painful Episodes

This medication is applied in clinical settings that involve acute or unstable symptom patterns. It is used in situations involving certain distressing symptoms, generally when supportive symptom management is appropriate for pain severity. The medication contributes to easing the overall symptom load during periods of heightened symptoms, and may assist with maintaining functional stability when symptoms interfere with routine activities.

Support for Symptomatic Discomfort

Vicodin ES is relevant in therapeutic domains where additional symptomatic support is needed for conditions associated with acute or disruptive episodes. It is used in situations involving certain distressing symptoms and supports patients during difficult episodes by easing distress and contributes to a sense of stability.


Quick Fact: Relevant for Managing Symptoms Related to Severe Physical Discomfort

Eligibility and Restrictions for Use

Vicodin ES (hydrocodone bitartrate and acetaminophen) eligibility is strictly defined by official regulatory standards, with use established primarily for adult patients (18 years and older).

The medicine is contraindicated in several populations, including any patient with a known hypersensitivity to hydrocodone, acetaminophen, or any component. Absolute exclusion applies to patients experiencing significant respiratory depression, acute or severe bronchial asthma, or known/suspected paralytic ileus.

Age-related rules restrict use in pediatric patients. The product is contraindicated in children younger than 12 years of age and in those younger than 18 years following tonsillectomy or adenoidectomy. For the general pediatric population, safety and effectiveness have not been established.

Conditional use is required for patients with impaired organ function. Caution must be exercised in patients with severe renal impairment. Due to the acetaminophen component, the medicine is contraindicated in individuals with severe hepatic impairment or active liver disease. Use is also not recommended during pregnancy due to the risk of Neonatal Opioid Withdrawal Syndrome, nor during lactation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for hydrocodone/acetaminophen (the components of Vicodin ES) identifies several categories of drugs and substances that require strict management or avoidance due to the potential for serious adverse effects. These interactions are categorized based on their mechanism, resulting in specific regulatory constraints.

Primary Interaction Categories and Constraints

Interacting Product Category Regulatory Constraint or Risk
CNS Depressants (e.g., alcohol, benzodiazepines, other opioids, muscle relaxants) Coadministration is restricted and should be reserved for cases where alternatives are inadequate, due to the high risk of severe sedation and respiratory depression. Alcohol must be avoided.
CYP3A4 Inhibitors (e.g., ketoconazole, ritonavir) May increase hydrocodone concentration, requiring dose reduction and careful monitoring for increased opioid side effects, including respiratory depression.
CYP3A4 Inducers (e.g., rifampin, carbamazepine) May decrease hydrocodone concentration, potentially leading to reduced effectiveness or opioid withdrawal, requiring dose adjustment and monitoring.
Serotonergic Drugs (e.g., SSRIs, SNRIs, TCAs) Use carries a risk of Serotonin Syndrome, requiring immediate discontinuation of the product if symptoms are observed.
Other Acetaminophen Products The maximum daily limit of acetaminophen (4000 mg) from all sources must not be exceeded due to the risk of liver damage.

These interactions necessitate careful clinical management, including monitoring, dose modifications, or outright avoidance of certain combinations, to mitigate the risk of serious, life-threatening outcomes. The coadministration of opioid analgesics with benzodiazepines or other central nervous system (CNS) depressants should be limited to the minimum effective dose and duration.

Mechanism of Action

Vicodin ES constitutes a combination of hydrocodone and acetaminophen, each component exhibiting a distinct pharmacodynamic mechanism.

Hydrocodone functions primarily as a mu-opioid receptor (MOR) agonist in the central nervous system (CNS), with lesser activity at delta-opioid receptors (DOR) and kappa-opioid receptors (KOR). MORs are G-protein-coupled receptors (GPCRs) predominantly coupled to the inhibitory Gi/ Go protein. Agonist binding activates this complex, leading to downstream inhibition of adenylyl cyclase, which decreases the intracellular concentration of the second messenger cyclic AMP (cAMP). Furthermore, Gi/ Go activation mediates the opening of inwardly-rectifying potassium (GIRK) channels, causing hyperpolarization of the neuronal membrane, and inhibits voltage-gated calcium channels, thereby suppressing neurotransmitter release from presynaptic terminals. These intracellular events decrease the excitability of neurons involved in ascending signal transmission in the spinal cord and midbrain.

Acetaminophen's mechanism involves inhibition of prostaglandin synthesis, potentially acting as a cyclooxygenase (COX) inhibitor, with greater selectivity for COX-2 or a COX-3 variant in the CNS. This action prevents the peripheral and central production of prostaglandins, which are signaling lipids that modulate neuronal sensitivity. Additionally, acetaminophen is thought to engage descending serotonergic inhibitory pathways within the CNS.

Dosage and Administration Information

How to Use Vicodin ES (Hydrocodone Bitartrate and Acetaminophen, 7.5 mg/300 mg)

This section outlines the administration guidelines for Vicodin ES tablets.

Administration Protocol

Vicodin ES tablets are intended for oral administration. It is a combined product containing 7.5 mg of hydrocodone bitartrate and 300 mg of acetaminophen. The medicine should be taken exactly as prescribed and not more often than directed.

Guideline Instruction
Unit Dose One tablet (7.5 mg/300 mg)
Frequency Every four to six hours
Maximum Daily Limit Do not exceed 6 tablets in 24 hours.

Administration Details and Restrictions

Administration Detail Instruction
Route of Administration Oral
Preparation Requirements None (Tablet is swallowed whole).
Use in Older Adults Dose selection should be cautious, typically starting at the low end of the dosing range.
Pediatric Use Safety and effectiveness have not been established in pediatric patients.

To minimize risk, the protocol dictates using the lowest effective dosage for the shortest duration consistent with individual treatment goals. Patients taking the medicine regularly who no longer require it may need a gradual tapering of the dose upon discontinuation, as hydrocodone may be habit-forming.

Recent Clinical Evidence

Vicodin ES: Recent Clinical Evidence

Clinical Studies for Acute Moderate to Severe Pain

Research on this combination primarily involves short-term, single-dose Randomized Controlled Trials (RCTs). This design was studied for evaluating how outcomes related to physical discomfort are observed in a clinical setting. Studies explored symptoms in adult populations presenting with acute or disruptive episodes of pain, such as following dental surgery. Researchers primarily measured change in pain intensity using rating scales over short intervals. Multiple trials reported that data show patterns related to measured changes in pain scores when compared against a placebo. Research provides insight into short-term changes, but the evidence is largely limited to these immediate, short-term outcomes.


Comparative Evidence: Placebo and Other Analgesics

Research has explored how the combination was observed against an inactive placebo and other analgesic options. While trials reported measurements that indicated a distinct response pattern compared to placebo, some comparative studies described a pattern where the measured reduction in pain intensity was not considered clinically different from that of other non-opioid options. This suggests that the evidence contributes to understanding symptom patterns but may not indicate a large measured difference in acute pain models.


Long-Term Research and Study Duration

The primary research exploring this combination was studied for short-term symptom changes. Outcomes describing episodic or acute changes were collected over immediate/single-dose observation periods (typically hours). Follow-up durations were limited, meaning research has limited information for long-term outcomes for conditions involving periods of heightened symptoms. The evidence base is not designed to describe outcomes over extended periods.


Evidence in Specific Patient Populations

The available evidence for certain patient groups is limited. Core research studies did not enroll sufficient numbers of subjects aged 65 and over to assess whether data show patterns related to different outcomes compared to younger adults. Official product labeling indicates that safety and effectiveness have not been established in the general pediatric population. While some limited research was observed in some studies to examine the combination in children for post-operative pain, the data for this group remain insufficient.


Research Gaps and Areas of Uncertainty

The core research is predominantly short-term, meaning the long-term effects are not fully established. Comparative evidence is lacking regarding consistent findings of a clinically important difference over non-opioid analgesic combinations in many acute pain models. Subgroup findings are uncertain, especially for older adults and children, where data for certain groups remain insufficient. The research highlights what is known—and what is still uncertain—about this combination.

Key Studies & References

  1. Hydrocodone Bitartrate and Acetaminophen Tablets, USP Prescribing Information (Generic Labeling)
  2. Efficacy and adverse effects of hydrocodone/paracetamol for acute pain

How should Vicodin ES be stored and disposed of?

Vicodin ES (hydrocodone and acetaminophen) must be stored safely to prevent misuse or accidental ingestion. Keep the tablets in their original container, tightly closed, at controlled room temperature, generally between 68^circF and 77^circF (20^circC and 25^circC). It is crucial to store this opioid medication in a secure, locked location, out of the reach of children, teenagers, and pets.

Disposal Guidelines

The most recommended method for disposing of unused, unwanted, or expired Vicodin ES is through a drug take-back program, such as those offered by the U.S. Drug Enforcement Administration (DEA) or select pharmacies. If a take-back option is not immediately available, the tablets should be promptly flushed down the toilet. This action prevents accidental ingestion, which can cause serious harm or death, especially in children.

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

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