Efferalgan Cod

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Efferalgan Cod

Medically reviewed

Marina Burgos

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 Efferalgan Cod

Property Description
Active Ingredients Paracetamol (Acetaminophen) and Codeine Phosphate
Form Typically Effervescent Tablets
Pharmacological Class Combination Analgesic (Non-opioid + Opioid)
Common Use Relief of Moderate to Severe Pain
Origin Synthetic

Core Identity and Purpose

Efferalgan Cod is a fixed-dose combination analgesic intended for oral use, serving as a stronger-acting pain reliever than single-ingredient options. This medication is strategically positioned for the management of moderate to severe acute pain that has not been adequately addressed by simpler analgesics alone.

This dual-component approach is utilized for intensified pain relief. This combination is clinically recognized for its effectiveness when dealing with pain requiring more than a peripheral mechanism of action.

Composition and Therapeutic Role

The core composition features two active components: Paracetamol and Codeine Phosphate. Paracetamol functions as a non-opioid analgesic and antipyretic, helping to reduce fever and pain. The non-opioid component helps ease discomfort by acting on pain signals primarily in the periphery.

The second ingredient, Codeine Phosphate, is classified as an opioid analgesic that acts centrally on the nervous system. The combination of these two agents is utilized when pain relief requires more than one mechanism of action. This dual-action approach means the medication is typically reserved for short-term needs when pain severity warrants this combined strength. The two compounds, derived from chemical synthesis, are important tools in the global strategy for stepped pain management.

Regulatory References

  1. NIH: About Acetaminophen

What side effects are possible with Efferalgan Cod?

Possible side effects and safety information

The safety profile for this combination of Paracetamol (Acetaminophen) and Codeine Phosphate is derived from official regulatory documents, grouping potential adverse reactions by frequency and affected organ system.

Official Frequency Classifications

Adverse reactions are classified based on reported incidence rates to regulatory authorities:

  • Common: Effects reported frequently include nausea, vomiting, constipation, dizziness, and somnolence (drowsiness). These are often associated with the initiation of treatment and the codeine component.
  • Uncommon/Rare: Less frequent effects include headache, pruritus (itching), rash, and rare occurrences of blood disorders (dyscrasias) and hepatic disorders.

Serious Adverse Reactions and Safety Restrictions

Regulatory agencies specifically highlight risks that, while not always common, require prominent warning due to their clinical severity. The two components contribute to distinct serious safety concerns:

  • Respiratory Depression: A potentially life-threatening risk associated with the opioid component (codeine), particularly in individuals who are ultra-rapid metabolizers.
  • Severe Hepatotoxicity: The paracetamol component carries a substantial risk of severe liver damage, especially with misuse or in cases of underlying severe hepatic impairment.

This medication is subject to strict regulatory constraints for specific groups. It is contraindicated for pain relief in children after tonsillectomy/adenoidectomy, in breastfeeding mothers, and in patients with severe respiratory or severe hepatic insufficiency. The risk of dependence and tolerance is explicitly linked to prolonged or long-term use, necessitating short-term administration.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information emphasizes that the combination of Paracetamol and Codeine carries a dual risk of severe, life-threatening toxicity, requiring immediate medical attention upon any suspected overdose ingestion. The profile is defined by two distinct, critical risks.

Documented Overdose Manifestations and Outcomes

Component Early Symptoms and Severe Outcomes Mandated Emergency Action
Paracetamol Early signs include anorexia, nausea, and vomiting. The primary risk is dose-dependent hepatic necrosis (liver damage), which may be delayed for 48 to 72 hours and is potentially fatal. N-acetylcysteine (NAC) is the specific antidote. Hospital monitoring is required due to the risk of delayed damage.
Codeine Symptoms include somnolence, stupor, constricted pupils, and muscle flaccidity. The primary risk is life-threatening respiratory depression and potential circulatory collapse (hypotension). Naloxone is the specific opioid antagonist used to reverse respiratory depression. Airway maintenance is critical.

When Urgent Medical Help Is Required

Regulators mandate that individuals seek medical attention immediately following any suspected ingestion of an overdose. This action is required even if initial symptoms are mild or absent because the most severe damage, specifically hepatic necrosis, is often clinically delayed. If signs such as slow or shallow breathing occur, the medication must be stopped, and emergency services must be contacted at once.

Therapeutic Uses of Efferalgan Cod

Quick Facts: Therapeutic Domains

  • Short-term treatment of moderate acute pain
  • Addresses pain not alleviated by single-ingredient treatments

What Efferalgan Cod Treats: Main Uses and Benefits

Efferalgan Cod is an authorized combination product utilized for the symptomatic management of moderate acute pain that does not respond adequately to a single-ingredient analgesic like paracetamol (acetaminophen) or ibuprofen alone.

This medication is indicated for short-term use to help relieve pain in various contexts. The combination of its two components—paracetamol and codeine—is designed to provide a complementary approach to pain relief. Paracetamol helps reduce pain signals and lower an elevated body temperature (fever), while codeine is an opioid analgesic that acts centrally to modify the body's perception of pain.

Appropriate use is limited to situations where the pain is of moderate intensity and has not been adequately addressed by non-combination options.

It is important that this treatment be administered only as prescribed or directed by a healthcare professional and for the shortest duration necessary.

Eligibility and Restrictions for Use

Who Can and Cannot Use Efferalgan Cod

Population eligibility for Efferalgan Cod (Paracetamol and Codeine combination) is strictly defined by regulatory authorities, with several groups designated for restricted or prohibited use.

Contraindicated Populations

Use is absolutely contraindicated in children younger than 12 years of age for any indication, and in all children and adolescents (under 18) following tonsillectomy or adenoidectomy for obstructive sleep apnoea. The medicine must not be used by breastfeeding women or individuals known to be CYP2D6 ultra-rapid metabolisers of codeine, due to the risk of respiratory compromise.

Absolute contraindications also apply to patients with severe hepatic insufficiency or severe respiratory depression, as stated in official labeling.

Restricted and Conditional Use

Population Group Regulatory Status
Adolescents (12-18 years) Permitted only for acute moderate pain not relieved by non-opioids; not recommended with compromised respiratory function.
Renal/Hepatic Impairment Use restricted in moderate to severe hepatic insufficiency (e.g., Gilbert's Syndrome) or renal insufficiency (CrCl leq50 mL/min).
Pregnancy Limited use; long-term use, especially near delivery, is not recommended due to the risk of neonatal opioid withdrawal syndrome.

Older adults, frail patients, and those with pre-existing conditions like increased intracranial pressure or a history of substance abuse require specific caution and monitoring.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents detail several clinically significant interactions for this product, which contains paracetamol (acetaminophen) and codeine.


Significant Drug Classes and Products

Co-administration with Central Nervous System (CNS) depressants, including but not limited to benzodiazepines, other opioids, sedatives, hypnotics, tranquilizers, general anesthetics, and alcohol, may result in an additive depressant effect, leading to profound sedation and respiratory depression. Prescribing in this context is generally restricted and requires careful dosage limitation.

Interaction with serotonergic drugs, such as SSRIs, SNRIs, and certain triptans, may increase the risk of serotonin syndrome, which necessitates monitoring.


Interaction-Related Restrictions

The use of this product is absolutely restricted with Monoamine Oxidase Inhibitors (MAOIs), including for 14 days following discontinuation of the MAOI. Concomitant use with mixed agonist/antagonist opioid analgesics (e.g., pentazocine, nalbuphine) should be avoided as it may reduce the analgesic effect or precipitate withdrawal symptoms.

Metabolic and Anticoagulant Notes

The codeine component is metabolized by the CYP2D6 enzyme; thus, use is not recommended in patients known to be ultra-rapid metabolizers. Furthermore, the paracetamol component can interact with oral coumarin anticoagulants, such as warfarin, by potentially increasing the International Normalized Ratio (INR), requiring close laboratory monitoring for bleeding risk.

Mechanism of Action

Mechanism of Action: Dual Pathway

Efferalgan Cod acts via a dual mechanism involving two distinct pharmacological classes to modulate nociception.


Paracetamol (Acetaminophen) Action

The primary action involves Paracetamol (Acetaminophen) which acts centrally by inhibiting cyclooxygenase (COX) enzymes, primarily COX-2, leading to the inhibition of prostaglandin synthesis within the central nervous system. This molecular event alters the signaling threshold for nociceptive input.


Codeine Metabolism and Receptor Binding

Codeine is a prodrug that undergoes O-demethylation to the active metabolite, morphine, via the cytochrome P450 enzyme CYP2D6. Morphine then binds as an agonist to mu-opioid receptors (mu-ORs) in the central nervous system. This interaction leads to the modulation of descending inhibitory pathways. The overall mechanism is synergistic, combining COX inhibition and mu-opioid receptor agonism.

Dosage and Administration Information

How to Use Efferalgan Cod

This section details the usage patterns for Efferalgan Cod (Paracetamol and Codeine Phosphate), focusing strictly on administration and dosing protocols.


Administration and Standard Dosing

The approved route of administration for this combination product is oral. As an effervescent tablet, the medicine requires specific preparation: the tablet must be dissolved completely in a full glass of water before it is ingested. The dosing regimen is structured around a minimum interval and a maximum daily limit to ensure appropriate use.

Feature Usage Instruction Summary
Single Dose (Adults ge 50 kg) 1 to 2 tablets (500 mg/30 mg to 1000 mg/60 mg of Paracetamol/Codeine).
Dosing Frequency As needed, maintaining a minimum interval of 4 to 6 hours.
Maximum Daily Limit 8 tablets in a 24-hour period, equivalent to 4,000 mg Paracetamol.
Duration of Use Strictly reserved for short-term use, often limited to a maximum of 3 consecutive days without medical consultation.

Usage Constraints and Special Populations

Adherence to the maximum daily dose is a procedural constraint designed to prevent exceeding the safety limit of the Paracetamol component. The product may be taken with or without food.

There are age-related restrictions, generally contraindicating its use in children under 12 years of age. Furthermore, patients with renal impairment require an extended dosing interval to manage accumulation, with the interval often being extended to 8 hours for severe impairment.

Recent Clinical Evidence

Efferalgan Cod: Recent Clinical Evidence

Efficacy and Pain Relief Studies

The combination of paracetamol (acetaminophen) and codeine has been extensively studied, primarily in the context of acute pain management, such as post-surgical or dental pain. Systematic reviews and meta-analyses have consistently investigated whether the combination provides enhanced pain relief compared to paracetamol alone.

  • Combination Effect: Multiple randomized, placebo-controlled trials have explored whether the addition of codeine to paracetamol is associated with a greater analgesic effect. Analysis of these single-dose studies often indicates an increase in pain relief when compared to paracetamol or codeine alone.
  • Study Design: Research comparing paracetamol 1000 mg plus codeine 60 mg versus placebo for acute pain relief found that a higher proportion of participants reported a positive outcome in the combination group. Studies examining lower doses of codeine (e.g., le 30 mg) in combination with a non-opioid component have also been evaluated.

Long-Term Adverse Event Monitoring

The dual-component nature requires ongoing assessment of both ingredients’ potential effects, particularly in the context of repeated use.

Assessment Area Research Findings/Focus
Adverse Events (AEs) Studies reported that the overall incidence of adverse events (e.g., nausea, vomiting, dizziness, drowsiness) increased with multi-dose regimens of the combination therapy compared to paracetamol alone.
Metabolism & Risk Pharmacokinetic research has investigated the conversion of codeine to its active metabolite, morphine, via the CYP2D6 enzyme. Genetic variations in this enzyme have been explored as a factor potentially influencing both individual analgesic response and the occurrence of adverse events.
Long-Term Use Concerns regarding the potential for dependence and abuse related to the codeine component have led regulatory bodies to emphasize limits on treatment duration and dose, particularly for over-the-counter access.

Frequently Asked Questions (FAQ)

Common questions about Efferalgan Cod (FAQ)


Q: What is the difference between Efferalgan Cod and regular Efferalgan?

Efferalgan Cod contains a combination of paracetamol (also known as acetaminophen) and an opioid analgesic called codeine. The combination is reserved by healthcare providers for managing moderate pain that is not relieved by non-opioid painkillers alone, such as standard paracetamol or ibuprofen.

Q: Can I take Efferalgan Cod if I am taking other painkillers?

Official guidance notes that because this product contains paracetamol, use is restricted with any other medicines that also contain paracetamol. Regulatory documents generally indicate that combining it with non-opioid pain relievers like ibuprofen is permitted.

Q: Why is Efferalgan Cod sometimes restricted compared to standard Efferalgan?

The primary restrictions placed on Efferalgan Cod are due to the presence of the codeine component, which is an opioid analgesic. Official documents highlight the risks of addiction, abuse, misuse, and life-threatening respiratory depression associated with the opioid component, necessitating strict controls.

Q: Can Efferalgan Cod affect my ability to drive or operate machinery?

Yes, regulatory information indicates that this medication may cause side effects such as drowsiness and dizziness. Official guidance describes restrictions on driving a car or operating machinery until the patient is aware of how the medication affects their individual alertness and ability.

Q: Is Efferalgan Cod available over-the-counter in some countries?

The combination of paracetamol and codeine is available as both prescription and non-prescription products in different countries, with non-prescription access usually subject to lower dose restrictions and limits on the duration of use to manage risk.

Q: What are the general safety classifications of Efferalgan Cod?

This product is officially classified as an Opioid Combination Analgesic. Due to the codeine component, regulatory documents identify it as a product with a heightened risk of addiction, abuse, and misuse, and it is subject to strict controls.

Q: Are there any specific warnings for the elderly using this medicine?

Official labeling highlights that elderly and debilitated patients may be at increased risk of serious or fatal respiratory depression. Regulatory documents describe that patient monitoring is required for this group.

Q: Can Efferalgan Cod cause a stomach upset?

Yes, common side effects related to the digestive system, as noted in regulatory documents, include nausea, vomiting, and constipation. These effects are generally associated with the initiation of treatment and the presence of the codeine component.

Q: Can Efferalgan Cod be used by people with a history of addiction?

Regulatory documents note that caution is recommended for use in patients with a personal or family history of substance abuse, which includes alcohol. Patient labels emphasize that an assessment of risk is required for this group.

Q: Is it normal to feel a bit light-headed after the first dose?

The medication may cause dizziness and lightheadedness as recognized side effects. Official advice mentions that getting up too quickly from a lying or sitting position may cause these feelings, as well as fainting.

Q: Is Efferalgan Cod used for headaches or only more severe pain?

Official information indicates the product is used for the relief of pain, which may include headaches and other aches. However, it is generally reserved for moderate to severe pain that has not been adequately relieved by non-opioid painkillers alone.

Q: What are the known long-term effects mentioned in regulatory documents?

Regulatory documents describe limits on long-term use due to risks related to the opioid component. Risks highlighted include addiction, misuse, and overdose, as well as the potential for reduced adrenal function (adrenal insufficiency).

Q: How quickly should I expect Efferalgan Cod to start working?

Pharmacokinetic data suggests that the peak concentration of the medicine in the blood is typically reached about 60 minutes (one hour) after the dose is taken.

Q: How long does the effect of Efferalgan Cod usually last?

The average duration of action for the codeine component is documented to be about 4 hours. This information is consistent with the minimum dosing interval often recommended in official guidance.

Q: Is Efferalgan Cod the same as Tylenol with codeine?

Efferalgan Cod and Tylenol with Codeine are different brand names used in various countries for products that contain the same active ingredients: paracetamol (acetaminophen) and codeine phosphate.

Q: What does 'Cod' stand for in Efferalgan Cod?

The abbreviation 'Cod' in the product name is a reference to the active ingredient codeine (codeine phosphate), which is the opioid component of the combination medicine.

Q: Does Efferalgan Cod have a generic equivalent?

Yes, the combination of paracetamol and codeine is widely available under various generic and brand names across different countries, often referred to by the generic name Co-codamol.

Q: Is it known to interact with common herbal supplements?

Regulatory guidance states there is not enough information to confirm if all herbal remedies and supplements are safe to take with the medication, as they are often not formally tested for drug interactions.

Q: Can I stop taking Efferalgan Cod suddenly?

Official documentation describes restrictions on stopping the medicine suddenly, especially after prolonged use, due to the potential for physical dependence from the codeine component. Administration protocols state that the product should be discontinued gradually.

Q: Does Efferalgan Cod affect blood pressure?

Regulatory documents list potential cardiovascular adverse events associated with the drug's components, including both hypotension (low blood pressure) and hypertension (high blood pressure) among the less common side effects.

Q: Can Efferalgan Cod be taken with cold and flu medication?

The product contains a full dose of paracetamol (acetaminophen). The risk of exceeding the maximum daily paracetamol dose is a concern when combining it with most cold and flu medications, as many of these products also contain paracetamol.

Q: What types of allergies should make me cautious about Efferalgan Cod?

Use is generally contraindicated if a patient has a known hypersensitivity (severe allergy) to either of the active ingredients, paracetamol or codeine. This caution also extends to any of the product's inactive components.

Q: Does Efferalgan Cod contain lactose or other common allergens?

Official product information typically lists all inactive ingredients. The effervescent tablet formulation is listed as containing excipients such as sorbitol and high levels of sodium. Patients with known sensitivities or allergies must refer to the specific packaging leaflet for the full list of inactive ingredients.

How should Efferalgan Cod be stored and disposed of?

Storage and Disposal Requirements

The storage of this medicine, which contains Paracetamol and Codeine, must strictly adhere to regulatory labeling to maintain stability and safety. The product must not be stored above 25 C and must be kept in its original package to ensure protection from light and moisture. For bottled presentations, the container must be kept tightly closed.

Due to the codeine content, the medicine must be secured and kept out of the sight and reach of children to prevent accidental ingestion.

Disposal must follow local protocols: Do not throw the unused or expired product into household waste or wastewater. The medicine must be disposed of according to local regulations for pharmaceutical waste.

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

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