Transpulmin N

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Transpulmin N

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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 Transpulmin N

Property Description
Active ingredients Camphor, Eucalyptol, and Levomenthol
Form Ointment, Balsam, or Cream
Pharmacological class Topical Rubefacient and Aromatic Respiratory Agent
Common use Symptomatic relief for cold-related discomforts
Origin Combination preparation derived from volatile plant compounds

What is Transpulmin N and What Type of Medicine is It?

Transpulmin N is a widely accessible Over-the-counter (OTC) combination medicine classified as a Topical Rubefacient / Counterirritant and an Aromatic Respiratory Agent. This classification defines the preparation as one intended for external, dermal application with the coexisting objective of providing benefits via inhalation. It is formulated as a semi-solid Topical preparation (ointment or balsam), utilizing the skin as the primary Route of administration. The core active ingredient, Camphor, is recognized for its mild analgesic and counterirritant properties.

Composition: Camphor, Eucalyptol, and Levomenthol

The preparation's effects are derived from its three Active ingredients [INN]: Camphor, Eucalyptol, and Levomenthol. These highly aromatic chemical substances are classified as volatile Monoterpenoids, primarily obtained from natural plant sources. Eucalyptol (1,8-Cineole) and Levomenthol (Menthol) are combined with Camphor and dispersed within an inert, Oily base or fatty vehicle. The formulation is distinct in its balanced tripartite composition, utilizing three major respiratory Aromatic agents together to enhance the overall sensory effect, setting it apart from simpler dual-agent preparations.

General Purpose of this Aromatic Topical Rub

The general purpose of this topical rub is to offer temporary, subjective relief from discomforts associated with the Common cold. The preparation leverages a dual action: its Counterirritant properties assist in distracting the sensory nervous system from the perception of minor localized Muscle aches, while its function as an Aromatic respiratory agent addresses the feeling of congestion. The topical application of these volatile oils is a traditional method used to provide relief from the symptoms of Nasal congestion. The Levomenthol component provides the distinct, immediate cooling sensation that is characteristic of this preparation type, making it a frequent choice for managing Respiratory discomfort.

What side effects are possible with Transpulmin N?

Possible Side Effects and Safety Information

The safety profile for this medicine is established by categorizing documented adverse reactions and defining restrictions based on official regulatory data.

Documented Adverse Reactions

Adverse reactions are classified by the frequency with which they have been observed in clinical data and post-marketing surveillance. Reactions have been documented across several System Organ Classes, including Psychiatric disorders, Nervous system disorders, Respiratory, thoracic, and mediastinal disorders, Skin and subcutaneous tissue disorders, Renal and urinary disorders, and General disorders and administration site conditions.

Frequency Category Examples of Documented Reactions
Very Rare Hallucinations.
Rare Exacerbation of bronchospasm, dyspnea (difficulty breathing), coughing irritation; hypersensitivity reactions or irritation of the skin and mucous membranes.
Not Known Laryngospasm (voice box spasm) in infants and small children; CNS (central nervous system) damage or kidney damage following widespread external application; contact eczema; asthma-like states up to respiratory arrest.

Serious Adverse Reactions and Safety Restrictions

Official regulatory documents highlight the potential for serious adverse reactions, particularly Laryngospasm, which can lead to severe respiratory disturbances in infants and small children (under 2 years of age). There is also a risk of systemic poisoning, including CNS damage and kidney damage, following widespread external application or accidental ingestion of a large quantity.

Safety-related restrictions and limitations prohibit the use of this medicine in specific populations and situations:

  • Infants and small children (under 2 years of age) due to the risk of laryngospasm.
  • Individuals with an increased risk of seizures or convulsions.
  • Patients with pronounced airway hypersensitivity, such as those with bronchial asthma or whooping cough.
  • During pregnancy and breastfeeding due to insufficient safety investigation.
  • For external use on damaged skin or skin diseases with rashes.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with products containing Camphor, Eucalyptol, and Levomenthol, primarily occurring after accidental oral ingestion, is classified as having the potential for severe, life-threatening outcomes. The regulatory profile is defined by Central Nervous System (CNS) toxicity, which may initially manifest as gastrointestinal symptoms (nausea, vomiting, abdominal pain) and progress rapidly to tremors, agitation, and convulsions (seizures). Other severe outcomes documented in regulatory guidance include respiratory depression, potentially leading to respiratory failure, and possible cardiac abnormalities.

Mandated Emergency Action

Seek immediate medical attention or contact emergency services (e.g., Poison Control) if ingestion is suspected or if the patient exhibits any signs of systemic exposure, such as convulsions, trouble breathing, collapse, or loss of consciousness. This action is mandated because no specific antidote is known for this toxicity, and management is entirely symptomatic and supportive.

Procedural steps in overdose include thorough decontamination of contaminated skin, control of seizures with intravenous benzodiazepines, and provision of necessary airway support. Due to the documented low toxic oral dose, particularly in children, an extended hospital observation period with continuous monitoring of vital signs and the heart (ECG) is often required, even in initially asymptomatic cases.

Therapeutic Uses of Transpulmin N

What Transpulmin N Treats: Main Uses and Benefits

The primary therapeutic role of this topical rub is to offer supportive assistance by easing the subjective discomfort and overall symptom burden associated with common, uncomplicated cold episodes. These therapeutic uses are considered relevant in conditions characterized by periods of heightened symptoms where short-term, localized relief helps patients cope more steadily.

Easing Symptomatic Discomfort

This aromatic rub is relevant in clinical settings that involve acute or unstable symptom patterns, such as symptoms related to nasal and bronchial irritation. The formulation helps address groups of symptoms that may appear suddenly, including nasal congestion, general breathing discomfort, and cold-related cough. The primary benefit is supportive, aiming to ease the overall symptom load during symptomatic periods.

Support for Physical Strain

Used across domains where additional symptomatic support is needed, this preparation is generally used to provide temporary comfort from minor localized muscle aches and soreness. This assists with maintaining functional stability and provides supportive relief when symptoms interfere with routine activities.


Quick Fact: Support for Nasal Congestion and Minor Muscle Aches

Regulatory References

  1. National Institutes of Health (NIH) DailyMed Label

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Transpulmin N — official regulatory information

This section outlines the eligibility and exclusion criteria for Transpulmin N, strictly based on official government regulatory documents.


Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed Use is permitted in children aged 2 years and older and in adults, provided no specific contraindications or restrictions apply.
Populations for whom use is contraindicated Infants and toddlers under 2 years of age are formally contraindicated due to the risk of laryngeal spasm. Individuals with known hypersensitivity to the active substances (camphor, cineole, levomenthol, turpentine oil) or excipients are also contraindicated.
Condition-specific eligibility rules Use is contraindicated in patients with bronchial asthma or other respiratory diseases associated with pronounced airway hypersensitivity.
Pregnancy and lactation eligibility status Not recommended during pregnancy and breastfeeding due to insufficient data and the potential for systemic absorption of key components.
Eligibility-related restrictions The preparation must not be applied to damaged skin, such as burns or open wounds.

Connection to the Overall Eligibility Profile

Official regulatory documents establish absolute contraindications for specific age groups (infants under 2) and individuals with known hypersensitivity or pre-existing respiratory conditions like asthma. Use is further limited by restrictions on application to damaged skin and a recommendation against use during pregnancy and breastfeeding, collectively defining the mandated boundaries for safe use of the medicine.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The officially documented interaction profile for this topical rub primarily concerns specific constraints on use rather than complex drug-drug interactions, which is characteristic of preparations with low systemic absorption.

Restrictions Based on Population and Sensitivity

The most critical interaction-related constraint is a formal prohibition on use in specific age groups. Regulatory authorities often specify that this product is contraindicated in children under 30 months of age. This restriction is mandatory in many international territories and is based on the heightened toxicological risk associated with volatile compounds in very young infants. Additionally, the rub must not be used by any individual with a known hypersensitivity or allergic reaction to the active ingredients, which include Camphor, Eucalyptol, or Levomenthol, or to any other component of the formulation.

Systemic Drug and Substance Interactions

Due to its application on the skin and minimal uptake into the bloodstream, the official regulatory labels do not list specific systemic drug-drug interactions. This means that no specific metabolic (CYP-enzyme mediated) or transporter-mediated interactions are documented. Furthermore, the official prescribing information does not explicitly state any interactions with co-administered substances such as alcohol, food, or dietary supplements. The regulatory documents also do not contain any mandatory timing requirements to separate the application of this rub from the administration of other medicines.

Mechanism of Action

Transpulmin N, containing essential oil components like menthol, camphor, and cineole (eucalyptol), modulates sensory and secretory processes primarily within the respiratory and integumentary systems. The main mechanism involves the interaction of these compounds with specific biological targets.

Menthol acts as a TRPM8 receptor agonist upon local application or inhalation. This agonism on Transient Receptor Potential Melastatin 8 (TRPM8), a cold-sensing ion channel, leads to channel opening and calcium influx, resulting in the perception of coolness in targeted tissues like the nasal and bronchial mucosa. Additionally, menthol and cineole demonstrate properties that affect the viscosity and volume of respiratory tract secretions. Cineole, specifically, has been implicated in modulating inflammatory mediators and pathways in the airways. Camphor contributes to local vasodilation upon cutaneous absorption, which facilitates an increase in localized blood flow within the applied dermal area. This combined peripheral and respiratory tract signaling cascade achieves a systemic physiological modulation that alters local sensation and respiratory fluid dynamics.

Dosage and Administration Information

The use of this combination rub is defined by a dual-route administration protocol. It is classified for Topical application to the skin, where its volatile compounds are subsequently utilized via Inhalation of aromatic vapors. Specific sites of application are defined: a thick layer is applied to the chest and throat for respiratory-related use, and a rub-on amount is applied directly to sore aching muscles or joints for topical analgesic effects.

The defined regimen restricts the maximum application frequency to not more than 3 to 4 times daily for adults and children two years of age and older. Procedural conditions mandate that when the preparation is applied to the chest, clothing must be kept loose to allow the aromatic vapors to function effectively.

Administration instructions contain critical limitations. The preparation is designated strictly for external use only and must not be taken by mouth or applied to sensitive areas like the nostrils or damaged skin. A key constraint is the pediatric exclusion: the preparation must not be used in children under 2 years of age. The maximum duration of use is defined as short-term; use must be discontinued and professional advice sought if symptoms persist for more than 7 days. Furthermore, the product must never be heated or added to hot water, which is an explicit procedural restriction.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Transpulmin N

This overview summarizes the type of research that has been conducted on the active components found in Transpulmin N (Camphor, Eucalyptol, and Levomenthol). It focuses on what researchers have explored, the patterns observed in clinical trials, and where gaps or uncertainties remain in the evidence, adhering to strict scientific neutrality.

Evidence for Symptom Patterns in Nasal Congestion (Common Cold)

The research exploring the components in relation to cold-related breathing discomfort has been primarily conducted using short-term Randomized Controlled Trials (RCTs). Outcomes related to functional activity level, such as sleep quality, and patient-reported outcomes describing perceived discomfort related to nasal sensation were the main focus of assessment. Findings describe patterns observed in the studies where patients reported a sensation of nasal cooling or changes in breathing perception shortly after application. Research describes that the observed patterns may relate more to sensory perception than to physical decongestion. The evidence is limited regarding long-term repeated use or the patterns observed extending beyond the immediate post-application period. Furthermore, comparative evidence is lacking against standard cold remedies.

Evidence for Symptom Patterns in Cold-Related Cough

Studies explored the rub's components in RCTs and observational settings, relevant in trials assessing short-term or episodic symptom patterns of cough severity. The research has focused mainly on pediatric populations and monitored outcomes reflecting daily functioning, specifically sleep quality. Studies report how symptoms evolved in the observed populations, with reported changes measured during the study period often associated with patterns of reported change in parent/child sleep quality, particularly for nocturnal cough symptoms. Data for certain groups, such as adults or patients with underlying chronic respiratory issues, remain insufficient.

Evidence for Symptom Patterns in Minor Localized Muscle Aches

Research describes pharmacological investigations into the individual counterirritant active components (Camphor and Levomenthol) and regulatory data relevant in trials assessing short-term outcomes related to physical discomfort. Findings describe group patterns related to a cooling or warming sensation that was observed in some studies following application. The certainty remains low for the results of the specific three-component combination in Transpulmin N for this indication, as dedicated research is less frequent than single-agent trials. The results apply only to the populations studied—healthy adults with minor, acute aches.

Research Gaps and Areas of Uncertainty

Research highlights that while certain subjective patterns have been observed, evidence quality varies across studies. There is often a difference between the strong subjective reports of comfort and the sometimes mixed findings regarding objective physiological measurements. Comparative evidence is lacking against competing OTC therapies. The evidence contributes to understanding short-term symptom patterns but underscores that research does not determine whether an individual will respond similarly.

Key Studies & References

  1. DailyMed Label for Topical Respiratory Agent (Combination preparation containing Camphor, Menthol, and Eucalyptus Oil)

Frequently Asked Questions (FAQ)

Common questions about Transpulmin N (FAQ)


Q: What is the maximum number of times I can apply Transpulmin N per day?

According to the product’s official regulatory labeling, the maximum frequency of application is restricted. It is specified that the rub should be applied not more than three to four times daily. This frequency limit is set for adults and children two years of age and older, in line with the product’s official prescribing information.

Q: What happens if I accidentally swallow Transpulmin N?

Official safety constraints state that this preparation is strictly for external use and must not be taken by mouth. In the event of accidental ingestion, which carries a risk of systemic poisoning, it is necessary to contact emergency medical help or a poison control center, as stated in professional safety information.

Q: What should I do if my child's cough or cold symptoms do not improve after using the rub?

The maximum duration of use for this product is defined as short-term. If symptoms do not improve, or if they persist for more than seven days, official product information indicates that discontinuing use and seeking professional advice is necessary.

Q: How should I clean the rub off my hands after I apply it?

Although the specific instructions for Transpulmin N do not detail a precise cleaning method, official guidance for similar external topical preparations generally recommends washing hands with soap and water after application to remove any residue.

Q: Is it safe to use Transpulmin N in a steam vaporizer or humidifier?

Official procedural conditions explicitly state that the preparation must never be heated or added to hot water. This is a strictly prohibited procedural constraint, as the product is designated only for topical and inhalation use, not for heating or adding to water.

Q: What makes Transpulmin N feel cold on the skin?

The sensation of coolness is produced by the active ingredient Levomenthol (Menthol), which acts as a counterirritant. This substance activates specific nerve receptors in the skin, and this activation leads to the sensory perception of coolness, which is the product's characteristic effect.

How should Transpulmin N be stored and disposed of?

How to Store and Dispose of Transpulmin N

Transpulmin N must be stored in accordance with official labeling requirements to maintain the stability of its volatile components.

Storage Conditions

The product must be stored at room temperature, typically between 15 C and 25 C, and must not be frozen or refrigerated. The container must be kept in the original outer packaging and protected from light and moisture. After each use, the container must be immediately re-closed tightly to prevent evaporation.

Stability and Child Safety

Do not use the medicine after the labeled expiry date. The medicine should be discarded if not used within 12 months of opening. Transpulmin N must be kept out of the sight and reach of children.

Disposal Instructions

Unused or expired product must not be disposed of in household waste or wastewater. Medicines should be disposed of according to local regulatory requirements, often by returning them to a pharmacist or designated collection point.

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

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