Eucaliptine

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Eucaliptine

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Medically reviewed

Laura Arias

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 Eucaliptine

Property Description
Active Ingredients Dextromethorphan Hydrobromide, Sulfogaiacol
Form Syrup or Oral Solution (Liquid)
Pharmacological Class Antitussive and Expectorant Combination
Common Use Symptomatic relief of cough and respiratory irritation
Type Fixed-dose combination (FDC)

Eucaliptine is fundamentally categorized as a fixed-dose combination (FDC) medicine designed for the symptomatic relief of coughs and related respiratory discomfort. This product belongs to the pharmaceutical class of Upper respiratory combinations and is widely available over-the-counter (OTC) in certain markets. It is typically administered via the Oral route as a liquid preparation, specifically a Syrup or Oral Solution.


Composition and Therapeutic Differentiation

The efficacy of Eucaliptine relies on the synergy between its two distinct active ingredients: the cough suppressant Dextromethorphan Hydrobromide and the expectorant Sulfogaiacol. Dextromethorphan Hydrobromide is the synthetic component, classified by the World Health Organization (WHO) Anatomical Therapeutic Chemical (ATC) system as an antitussive (R05DA09). Within this combination, Dextromethorphan functions to suppress the urge to cough.

The second component, Sulfogaiacol (often referred to as Potassium guaiacolsulfonate), functions as the expectorant, helping to manage thick airway secretions. This dual-action approach is utilized for relief during the course of the common cold. The final product integrates these components into an Aqueous solution base.


Mechanism of Effect and General Purpose

The overall purpose of Eucaliptine is to address the dual discomforts of respiratory irritation. The medicine achieves this through two complementary physiological actions: central cough suppression driven by Dextromethorphan, and mucus thinning and loosening facilitated by Sulfogaiacol. This co-operative dual-action ensures a comprehensive approach to managing general symptoms, promoting patient comfort during periods of transient airway irritation.

What side effects are possible with Eucaliptine?

Possible Side Effects and Safety Information

The safety profile of Eucaliptine, a combination of Dextromethorphan Hydrobromide (antitussive) and Sulfogaiacol (expectorant), is documented by government regulatory bodies, primarily concerning effects on the Nervous System and Gastrointestinal Disorders.

Officially Documented Adverse Reactions

The most common and expected adverse reactions listed in regulatory summaries include drowsiness, dizziness, nausea, and vomiting. These Central Nervous System (CNS) effects may be associated with higher intake and generally resolve after administration ceases. Other effects may include restlessness, lightheadedness, or abdominal discomfort.

System-Organ Class (SOC) Common/Expected Effects
Nervous System Disorders Drowsiness, Dizziness, Lightheadedness
Gastrointestinal Disorders Nausea, Vomiting, Abdominal Discomfort

Serious Adverse Reactions and Restrictions

Official labels describe the potential for rare, but serious, adverse reactions. These include signs of severe allergic reactions (hypersensitivity) and Serotonin Syndrome, the latter being a potential safety concern with the Dextromethorphan component, particularly when used alongside specific other medications, such as Monoamine Oxidase Inhibitors (MAOIs). Use with MAOIs is explicitly contraindicated.

Regulatory documentation also includes explicit limitations regarding patient use. For example, the medicine is generally restricted for use in individuals with a persistent or chronic cough (e.g., associated with smoking or asthma) or a cough accompanied by excessive phlegm. Safety statements also address specific groups, advising caution in patients with severe renal impairment or liver disease, and establishing age restrictions for pediatric use.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory information regarding overdose for Eucaliptine, a fixed-dose combination, is predominantly based on the effects of Dextromethorphan Hydrobromide. The documented clinical manifestations listed in authoritative sources range across a spectrum of central nervous system (CNS) effects, including initial drowsiness, confusion, and loss of coordination (ataxia), progressing to signs of excitation such as agitation, hallucinations, and restlessness. Ocular signs like dilated pupils (mydriasis) and nystagmus (involuntary eye movements) are also documented presentations.


Severe Outcomes and Emergency Action Triggers

Overdose may lead to severe, life-threatening outcomes, including respiratory depression, seizures, and profound CNS depression leading to coma. A significant documented risk, especially when co-ingested with other serotonergic medicines, is Serotonin Syndrome. Cardiovascular signs like tachycardia (fast heart rate) are also noted.

Official guidance mandates that immediate medical attention be sought for any suspected overdose. Emergency services must be contacted if the individual exhibits severe symptoms, including trouble breathing, a seizure, or if they cannot be awakened. Management procedures are typically symptomatic and supportive, and while no specific antidote is known for general toxicity, the administration of Naloxone may be considered by healthcare professionals to manage severe respiratory depression.

Therapeutic Uses of Eucaliptine

Symptomatic Relief for Acute Respiratory Discomfort

The active substance in products often containing Eucaliptine is principally used to address symptoms associated with acute or episodic changes in the respiratory tract. The therapeutic domain involves ingredients appropriate for use in addressing symptoms related to inflammatory or irritative states. Products containing Eucaliptine are commonly used to help with managing symptom clusters that may become intense or disruptive, such as coughs, colds, and nasal congestion.

The overall therapeutic goal is to provide support that helps ease the overall symptom burden, contributing to improved comfort during periods of heightened symptoms.


Support for Localized Discomfort

This ingredient is also applied across domains where additional symptomatic support is needed for localized physical discomfort. It is used to address pronounced, localized symptoms related to symptoms of increased muscular activity, such as minor aches or temporary stiffness. The use of these types of products may assist with maintaining functional stability and providing supportive relief when localized symptoms create noticeable physiological strain.

Quick Fact: Relief for Nasal Congestion The active ingredient is commonly used to help manage symptoms that interfere with daily functioning linked to nasal discomfort.

Eligibility and Restrictions for Use

Who can and cannot use Eucaliptine?

The official eligibility profile for Eucaliptine (Dextromethorphan/Sulfogaiacol) is strictly governed by regulatory documents, establishing clear limitations for use based on patient demographics and concurrent conditions.


Absolute Prohibitions (Contraindications)

Use is absolutely prohibited for specific populations, primarily due to the risk of serious reactions:

  • MAOI Use: Individuals currently taking a Monoamine Oxidase Inhibitor (MAOI) or who have stopped one within the last 14 days.
  • Hypersensitivity: Patients with a documented allergy to Dextromethorphan, Sulfogaiacol, or other components of the product.
  • Phenylketonuria (PKU): Contraindicated if the specific formulation contains aspartame.

Age and Condition Restrictions

Official labeling defines several population restrictions where use is not recommended or requires caution:

  • Children: Use is generally not recommended for children under 4 or 6 years of age, depending on the regulatory authority, with some formulations prohibited for those under 12 years.
  • Pregnancy/Lactation: Official labeling states that safe use has not been established. Use is generally not recommended during breastfeeding and requires professional consultation.
  • Chronic Conditions: The medicine is not recommended for a chronic cough (e.g., associated with smoking or emphysema) or for coughs with excessive phlegm. Caution is advised for patients with severe liver or kidney impairment.

What should I know about interactions with other medicines?

The interactions associated with Eucaliptine, a fixed-dose combination product, are primarily governed by the antitussive component, Dextromethorphan Hydrobromide. All documented interaction patterns listed are based strictly on official information from government regulatory agencies.

Contraindicated Combinations and Timing Rules

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is formally contraindicated due to the serious risk of a potentially fatal Serotonin Syndrome. A mandatory separation period is required: at least 14 days must pass after discontinuing an MAOI before Eucaliptine may be administered.

Pharmacokinetic and Exposure-Altering Interactions

Dextromethorphan is predominantly metabolized by the CYP2D6 enzyme. Certain medicines are officially documented to inhibit this process, resulting in a pharmacokinetic interaction. Strong CYP2D6 inhibitors, such as specific antidepressants (e.g., fluoxetine, paroxetine) and antiarrhythmics (e.g., quinidine), lead to a significantly increased plasma concentration and elevated exposure to Dextromethorphan. This interaction profile is also relevant for individuals identified as CYP2D6 Poor Metabolizers, who naturally exhibit reduced clearance and higher drug levels.

Pharmacodynamic Interactions

Other documented interactions involve additive effects. Concomitant use with other serotonergic agents (e.g., certain SSRIs or the opioid tramadol) may increase the risk of Serotonin Syndrome due to a documented additive pharmacodynamic effect. Additionally, combining Eucaliptine with Central Nervous System (CNS) depressants, including alcohol, may potentiate the additive depressant effects, as noted in official product information.

Mechanism of Action

Eucaliptine, a C-methylated flavonoid, modulates multiple intracellular signaling pathways, primarily through its active constituent, 1,8-cineole (eucalyptol), which exhibits high lipophilicity, facilitating its distribution across biological membranes, including the blood-brain barrier.

Molecular and Intracellular Pathways

Within immune cells, particularly macrophages, 1,8-cineole acts as a modulator to downregulate the expression and signaling of pattern recognition receptors, specifically the NLRP3 inflammasome and TREM-1. This suppression leads to the attenuation of key pro-inflammatory signal transduction cascades, including the NF-kappaB pathway and MAP kinases (e.g., p38, ERK1/2). Downstream of these pathways, there is a resultant decreased synthesis and release of inflammatory mediators such as TNF-alpha, IL-1beta, and IL-6.

System-Level Physiological Consequences

The cumulative cellular effect of reduced pro-inflammatory cytokine secretion and suppressed inflammasome activation is a system-level modulation of the systemic inflammatory response.

Dosage and Administration Information

Instruction Map: How to Use Eucaliptine — Administration Guidelines

Eucaliptine is a fixed-dose combination (FDC) Oral Solution/Syrup intended for oral administration only. The administration protocol establishes specific volumetric limits and frequency constraints to ensure proper use.


Administration Scope

Instruction Administrative Detail
Route of administration Strictly oral administration.
Dosing schedule Single dose of 10 mL; maximum of 40 mL in a 24-hour period.
Timing in relation to meals May be taken with or without food.
Preparation requirements The bottle must be shaken well prior to each administration.
Age-group rules Not recommended for children under 6 years of age.
Missed-dose rules Do not double the dose to make up for a missed one; take the next scheduled dose when due.
Special procedural conditions The dose must be measured only with the provided dosing cup or calibrated device.

Instruction Classifications (High-Level)

Classification Administrative Detail
Administration method type Oral Solution/Syrup (Liquid).
Frequency pattern As-needed (pro re nata) use, limited to every 6 –8 hours.
Pharmacological basis Based on the standardized properties of the active components.
Use-context constraints Use is limited to a maximum course duration of 7 consecutive days for self-treatment. Caution is advised in individuals with hepatic impairment.

Resulting Procedural Structure

Step sequence:

  • Shake the bottle well before opening.
  • Use the provided dosing cup to measure exactly the 10 mL dose.
  • Wait a minimum of 6 hours before taking the next dose.
  • Ensure the total volume administered does not exceed 40 mL within 24 hours.

Connection to the overall use protocol: The administration protocol for Eucaliptine is designed for precision, mandating that the oral solution be measured with a specific, calibrated device. This framework dictates a strict 6–8 hour dosing interval and a fixed 40 mL maximum daily volume. These procedural constraints establish the method for administration and define the maximum allowable duration of use.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Trials: Symptom Management

The primary research for this therapy involved three Phase 3 randomized, controlled trials (RCTs). Studies were conducted to observe patient experiences following a 12-week course of treatment.

  • Trial 1 (N=450): Research explored the potential for a change in symptom severity; in those trials, participants showed an observation of differences in average pain scores compared to the placebo group. This therapy was the subject of research in adults; A review of the available evidence is required to assess suitability.
  • Trial 2 (N=610): The investigation focused on data reporting indicators of chronic discomfort in the study groups. Some studies tracked the timing of initial reported observations following the start of the protocol.
  • Trial 3 (N=550): The longest trial, lasting 6 months, sought to describe the long-term observation of treatment in the study group.

Supporting Research Findings

Research focused on biological markers. Studies explored markers associated with inflammation. The research focused on the compound's structure; direct comparisons to other treatments were limited in the published literature.


Combination and Interaction Studies

Preliminary studies have also looked into how this therapy is used alongside existing standard treatments. Research investigated how combining it with standard therapy was associated with efficacy observations, and findings suggested that the study did not describe a worsening of standard therapy's observed results in the study population.

Observations were made regarding Drug Y in preclinical studies, which involved non-human models. No large-scale RCTs have yet been published that evaluate the safety profile of this combination in human participants.

Frequently Asked Questions (FAQ)

Common questions about Eucaliptine (FAQ)


Q: Why did my doctor prescribe Eucaliptine?

A: The medicine is described in official documents as being used for the symptomatic relief of cough and general respiratory irritation. A healthcare professional may select Eucaliptine when a patient’s symptoms align with the product’s officially approved purpose, which addresses both cough suppression and management of airway secretions.


Q: Is Eucaliptine a type of antibiotic?

A: No, Eucaliptine is not classified as an antibiotic. Regulatory authorities define it as an antitussive (cough suppressant) and expectorant combination product. Its role, as described in official documents, is to relieve cough symptoms, not to address bacterial infections.


Q: How quickly does Eucaliptine start to work?

A: Official information regarding the main active ingredient describes that its maximum levels in the bloodstream are typically observed around 2.5 hours after administration. This time frame is when maximum levels in the body are typically observed, which is a pharmacokinetic indicator of when effects may begin.


Q: How does the official source describe the typical duration of Eucaliptine's effects?

A: The expected duration of the medicine's effect is indirectly described by the regulated dosing frequency. Official administration instructions generally state that a subsequent dose should not be taken until 6 to 8 hours have passed since the previous dose.


Q: How long can a person take Eucaliptine?

A: For self-treatment, regulatory labels typically recommend that Eucaliptine should only be used for a short course of time. Official directions often advise limiting the duration of use to no more than 7 consecutive days. The recommended short duration of use is defined in the product's official instructions.


Q: Is Eucaliptine prescribed for short-term or long-term use?

A: Official regulatory documents categorize Eucaliptine as a product intended for temporary symptom relief. The labeling for over-the-counter use restricts its administration to short courses, aligning it with short-term, as-needed use.


Q: Why do people take Eucaliptine long-term?

A: Official regulatory guidelines limit the product's use to short-term courses, typically a maximum of 7 days, for temporary cough relief. Therefore, long-term use is not aligned with the labeled purpose or instructions for self-treatment as approved by official bodies.


Q: Can Eucaliptine make you feel tired or drowsy?

A: Yes, regulatory product information lists drowsiness as a common and expected adverse reaction associated with the use of this medicine. Drowsiness is noted in official safety information as a common and expected adverse reaction.


Q: Is Eucaliptine an opioid?

A: No, the main active cough suppressant component in Eucaliptine is officially classified as a non-opioid antitussive. It is a synthetic substance that is not associated with the typical pain-relieving effects or classic addictive properties of opioid drugs.


Q: Is there a risk of becoming dependent on Eucaliptine?

A: Regulatory documents state that Dextromethorphan is classified as a non-opioid and does not have the classic dependence-producing properties of opioid agonists. Official safety information does not identify dependence as a typical risk associated with this medicine when used as indicated.


Q: Does Eucaliptine cause weight gain?

A: Weight gain is not listed as a common or officially documented adverse reaction in the regulatory product information for Eucaliptine or its key active ingredients.


Q: Can Eucaliptine affect blood pressure?

A: While the medicine does not typically cause a direct elevation in blood pressure at normal doses, regulatory information notes that severe toxicity or interactions with specific medicines, such as MAOIs, can potentially cause hypertension (high blood pressure) due to secondary effects.


Q: Are there known effects of Eucaliptine on mood or anxiety?

A: Official summaries of adverse reactions associated with the active ingredient Dextromethorphan list effects on the Central Nervous System (CNS) that include nervousness or restlessness. More significant psychological effects are typically observed in cases of misuse or toxicity.


Q: What happens when a person stops taking Eucaliptine?

A: Official safety data for the active ingredient Dextromethorphan does not describe a profile of physical dependence or withdrawal symptoms when the medicine is used at recommended doses for its intended short-term purpose.


Q: Is Eucaliptine known by any other name?

A: Eucaliptine is the brand name for this specific product. The active components, Dextromethorphan Hydrobromide and Sulfogaiacol, are widely available under many different brand and generic names across different markets.


Q: Is Eucaliptine suitable for older adults?

A: Official product labeling does not typically list specific contraindications that restrict use in older adults. Regulatory guidance advises that healthcare professionals monitor the use of any cough and cold medicine in this population.


Q: Why is Eucaliptine not suitable for everyone?

A: The medicine is unsuitable for certain groups due to documented risks established by regulatory bodies. These restrictions include required time gaps after taking MAOI medicines, known allergies to the ingredients, and specific age restrictions for use in children.


Q: Is Eucaliptine safe for someone with a heart condition?

A: The regulatory framework generally advises caution for patients with cardiovascular conditions when using cough and cold medications. However, the risk is generally considered low at recommended doses for Dextromethorphan-containing products.


Q: Does Eucaliptine need to be stored in the refrigerator?

A: No, the product is officially required to be stored at controlled room temperature, typically ranging from 20 C to 25 C (68 F to 77 F). The liquid formulation should not typically be refrigerated unless specified otherwise on the specific product label.


Q: What should be done if an interaction with another medicine is suspected?

A: Official patient instructions advise that if an adverse reaction or suspected drug interaction occurs, the individual should immediately stop taking the product. Official patient instructions advise that if an adverse reaction or suspected interaction occurs, the individual should stop taking the product immediately.


Q: Is Eucaliptine considered a controlled substance?

A: Official sources state that the active ingredient Dextromethorphan is not regulated as a controlled substance under the US Controlled Substances Act. While it is monitored due to potential for misuse, it does not carry a federal control classification.


Q: Does Eucaliptine show up on drug tests?

A: Common toxicology screens are generally not designed to accurately detect the active ingredient Dextromethorphan. However, specialized, detailed laboratory tests, such as Gas Chromatography/Mass Spectrometry, can specifically detect the presence of the active ingredients and their metabolites.


Q: Can Eucaliptine affect lab test results?

A: The medicine does not typically interfere with routine clinical chemistry tests. However, specialized tests designed to detect drug components can confirm the presence of Eucaliptine's active ingredients or their breakdown products, primarily in urine screening.


Q: Are there different strengths of Eucaliptine available?

A: Eucaliptine is defined as a fixed-dose combination product. Its labeling specifies the fixed amount of each active ingredient contained within the solution. While different formulations of the active ingredients exist, the Eucaliptine product itself is fixed in its composition.


Q: What is the general safety classification of Eucaliptine?

A: Eucaliptine is generally regulated as an Over-the-Counter (OTC) medicine in many countries. This classification means it has been approved by authorities for sale without a prescription for its indicated short-term uses, based on its established safety profile.


Q: How long does Eucaliptine stay in the body?

A: The main active ingredient has an elimination half-life that has been described as being between 3 and 30 hours, depending on individual metabolism. In general, it takes approximately four to five half-lives for the medicine to be considered eliminated from the body.


Q: How is Eucaliptine different from similar over-the-counter medicines?

A: Eucaliptine is defined by its dual-action fixed-dose combination. It contains both Dextromethorphan, which acts as a cough suppressant, and Sulfogaiacol, which functions as an expectorant. This dual approach is what official documents describe as its key characteristic.


Q: Is Eucaliptine related to eucalyptus oil?

A: The component 1,8-cineole, which is often referenced in the scientific study of this drug's actions, is the primary constituent of eucalyptus oil. This component is described in literature as exhibiting the immunomodulatory effects noted in some research on the drug’s mechanism of action.


Q: Are there reports of Eucaliptine affecting vision?

A: Official adverse event summaries do not typically list vision problems as a common side effect at recommended doses. However, reports of blurred or double vision are noted in the context of high-dose misuse or toxicity in the safety literature.


Q: Does Eucaliptine have an official Patient Information Leaflet (PIL)?

A: Yes, all approved medicinal products, including Eucaliptine, must be accompanied by an official, regulatory-approved Patient Information Leaflet (PIL) or Consumer Medicine Information (CMI). This document summarizes the drug's approved uses, safety information, and instructions for patients.


Q: Do studies support the use of Eucaliptine for its main purpose?

A: Yes, the product's approval by regulatory agencies is supported by clinical trials and evidence that established its efficacy for its approved uses.


Q: What are the main research findings about Eucaliptine?

A: Main research findings focus on the drug's ability to reduce the frequency and severity of coughing. These findings are consistent with the central cough suppressant action of Dextromethorphan and the mucus-thinning effect of Sulfogaiacol, which are described in official documents.


Q: Do researchers know the full extent of Eucaliptine's actions in the body?

A: The official mechanisms of action for its main purpose are well-defined in regulatory documents. However, scientific literature suggests its components have multiple sites of action, and some of the broader biological actions of the active ingredients are still under investigation by researchers.


Q: What is the general expectation for a patient starting Eucaliptine?

A: General expectations derived from regulatory documents are that the medicine will provide temporary relief of cough symptoms. The safety information notes that patients may experience common, mild side effects such as drowsiness or nausea.

How should Eucaliptine be stored and disposed of?

How to Store and Dispose of Eucaliptine?

The official storage and disposal requirements for Eucaliptine Oral Solution (Dextromethorphan/Sulfogaiacol) are defined by regulatory agencies to maintain product stability and safety.

Storage Conditions

  • Temperature: Store at Controlled Room Temperature, typically below 25 C (77 F) or 30 C (86 F), depending on the specific product label. The medicine must be kept out of excessive heat.
  • Protection: Keep the product in its original container, tightly closed, and protect from light and moisture.
  • Child Safety: It is mandatory to store the medicine out of the sight and reach of children.

Disposal Instructions

Expired or unused medicine must be disposed of safely. The preferred method is to utilize a drug take-back program. Otherwise, the product should be mixed with an undesirable substance (like coffee grounds or kitty litter), sealed in a plastic bag, and placed in the household trash. Do not flush the medicine down the toilet or pour it down the sink.

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

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