Pulmobron

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Pulmobron

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 Pulmobron

Property Description
Active ingredient Terbutaline sulfate
Form Tablets, solution (oral, nebulization, injection)
Pharmacological class Selective beta2-adrenergic agonist
General purpose Relaxation of airway smooth muscle
Origin Synthetic compound

What Type of Drug is Pulmobron and What Does It Contain?

Pulmobron is a medicinal preparation whose core component is the single active substance, Terbutaline sulfate, classifying it as a selective beta2-adrenergic agonist and an adrenergic bronchodilator. This drug is a synthetic compound, derived from a phenylethanolamine structure. The classification of Terbutaline's mechanism is clinically recognized for its specific action on beta2 receptors. Pulmobron is formulated into several identity-level preparations, including oral tablets, an oral solution, and sterile solutions designated for inhalational and subcutaneous administration, offering distinct routes for the delivery of the active ingredient. Its primary distinguishing feature within this class is its short-acting nature, positioning it for rapid therapeutic effect rather than sustained maintenance.


Understanding the General Purpose of This Bronchodilator

The general purpose of Pulmobron is to induce bronchodilation, which is the physiological process of widening the air passages in the lungs. Its selective agonist action specifically targets and causes the smooth muscle surrounding the bronchial tubes to relax. This action reverses acute tightening of the airways. This muscle relaxation counteracts the involuntary tightening, or bronchospasm, thereby lowering resistance within the airways. The utility of this action is to facilitate improved airflow, which is experienced by the patient as easier breathing and the relief of airway constriction, often utilized when rapid relief from tightness is needed.

What side effects are possible with Pulmobron?

Possible Side Effects and Safety Information: Pulmobron

Pulmobron's safety profile, based on regulatory documentation, details adverse reactions primarily affecting the gastrointestinal tract, respiratory system, and skin. The most frequently reported adverse reactions include nausea, diarrhea, dyspepsia, rash, dizziness, cough, headache, and fatigue.

Adverse Reaction Category Examples of Frequently Reported Events
Gastrointestinal Disorders Nausea, diarrhea, dyspepsia, abdominal pain
Nervous System Disorders Headache, dizziness
Skin & Subcutaneous Tissue Rash
Metabolism & Nutrition Decreased appetite, weight loss

Serious adverse reactions reported in the context of this class of medications include infections and pneumothorax (based on post-marketing surveillance for associated agents).

Safety Restrictions and Limitations

Pulmobron is formally contraindicated in patients with a history of hypersensitivity to the active substance or any of its components. A critical regulatory restriction is the contraindication of its use as monotherapy in asthma; it must not be used alone in patients with asthma. Furthermore, the medication is not indicated for the management of acute respiratory symptoms, such as an acute bronchospasm or acute exacerbations of Chronic Obstructive Pulmonary Disease (COPD).

Adverse events, particularly those affecting the gastrointestinal and dermatological systems, have been noted to potentially be more common at higher doses. Safety monitoring is generally advised for unexpected or serious infections. The overall safety structure emphasizes that the risk profile is primarily composed of common, non-serious adverse reactions, coupled with specific, mandatory limitations on its use in certain acute or singular therapeutic contexts.

Overdose and Emergency Response

Overdose and when to seek help

Overdose with Pulmobron (Terbutaline sulfate) is defined in regulatory documents by clinical manifestations resulting from excessive beta-adrenergic stimulation. Documented signs include significant tachycardia (fast heart rate), palpitations, and cardiac arrhythmias such as atrial fibrillation. Neurological effects may present as tremor, anxiety, headache, and tonic muscle cramps. Severe outcomes documented in official labeling can involve serious cardiac instability, and in pediatric cases, seizures have been reported.

Overdose also results in metabolic and physiological disturbances, notably hypokalemia (low potassium), hyperglycemia (high blood sugar), and potential lactacidosis.

When to Seek Urgent Help

Immediate emergency medical assistance is required if there is suspicion of overdose and the individual is experiencing severe symptoms such as passing out or significant trouble breathing. Otherwise, the official regulatory action is to contact a poison control center for guidance.

Official Management and Monitoring

Treatment is symptomatic and supportive. Regulatory instructions mandate continuous monitoring of the patient's heart rate, blood pressure, acid-base balance, and serum electrolytes. A cardioselective beta-receptor blocking agent is documented as the preferred antidote, but official labeling cautions that its use requires careful consideration due to the risk of inducing bronchospasm.

Therapeutic Uses of Pulmobron

What Pulmobron Treats: Main Uses and Benefits

Pulmobron is used in situations involving distressing symptoms related to physical discomfort. The core therapeutic domain of the treatment is managing symptoms that interfere with daily functioning.

Pulmobron is used as an adjunctive therapy for respiratory tract disorders characterized by symptoms related to inflammatory or irritative states, which may include conditions such as chronic obstructive airways disease (COPD) and acute bronchitis. The treatment may assist with the management of symptoms related to heightened physiological activity.

It provides support that helps ease the overall symptom burden and contributes to improved comfort during periods of heightened symptoms.

This medicine is commonly used to help with acute or disruptive symptom patterns, such as a productive cough. It supports general well-being during symptomatic phases and is considered relevant when short-term symptomatic assistance is needed to assist with maintaining functional stability.


Quick Fact: Relevant for symptoms associated with acute or episodic changes

Eligibility and Restrictions for Use

Who Can and Cannot Use Pulmobron (Terbutaline Sulfate)

Pulmobron's eligibility is strictly defined by regulatory documents, categorizing patients into approved, restricted, and contraindicated groups. The medicine is primarily approved for adults and adolescents 12 years of age and older for the management of bronchospasm associated with conditions like asthma and bronchitis.

Non-Eligibility and Caution

Absolute Contraindications (Must Not Use):

  • Patients with documented hypersensitivity to Terbutaline sulfate or any related sympathomimetic amines.
  • For obstetrical use (tocolysis): It is strictly contraindicated, with an FDA Boxed Warning, for prolonged or maintenance labor suppression, especially in patients with pre-existing ischemic heart disease.

Age and Conditional Restrictions:

  • Use in children younger than 12 years of age for oral and injectable forms is not recommended.
  • The medicine must be used with caution in patients with pre-existing conditions such as cardiovascular disorders (including hypertension or arrhythmias), diabetes mellitus, hyperthyroidism, or convulsive disorders, as documented in the official labeling.

Pregnancy and Lactation:

  • Beyond the absolute contraindication for tocolysis, use in pregnant women for asthma may require caution near term. Terbutaline is excreted into human milk, necessitating cautious use during lactation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section summarizes the officially documented interactions with other medicinal products and substances, as established in regulatory labeling.

Pharmacodynamic Interactions and Restrictions

Co-administration with other anticholinergic drugs is not recommended for chronic use due to potential additive effects. The concurrent use of beta-mimetics, systemically absorbed anticholinergics, and xanthine derivatives may increase the severity of potential side effects. The action of the component responsible for beta-adrenergic effects may be enhanced in patients also receiving Monoamine Oxidase Inhibitors (MAOIs) or Tricyclic Antidepressants.

Potentially Opposing or Enhancing Effects

Beta-blockers may cause a potentially serious reduction in the product's effectiveness and should be used with caution. Conversely, the co-administration of additional beta-agonists, xanthine derivatives, and corticosteroids may enhance the therapeutic effect. Caution is also noted when the product is used with halogenated hydrocarbon anaesthetics (such as halothane), which may increase susceptibility to cardiovascular effects from the beta-agonist component. Consult an authorized healthcare professional regarding the use of this product with any other prescription or non-prescription medicines.

Mechanism of Action

Receptor Targeting and Molecular Activation

Pulmobron (Terbutaline sulfate) functions by selectively targeting and activating beta2-adrenergic receptors (beta2-AR), which are concentrated on the smooth muscle surrounding the air passages. This molecular interaction initiates the drug's effect by engaging the Gs-protein cascade inside the cell, which initiates the signal transduction cascade inside the cell.


cAMP-Driven Signaling Cascade and Enzyme Modulation

The activation rapidly increases the intracellular concentration of the second messenger cyclic AMP ( cAMP), which is the core of the mechanistic cascade. Elevated cAMP then activates Protein Kinase A ( PKA), an enzyme that phosphorylates and inactivates Myosin Light-Chain Kinase ( MLCK), which prevents the biochemical steps required for muscle fiber contraction.


️ Physiological Consequence: Airway Smooth Muscle Relaxation

This biochemical cascade culminates in the relaxation of bronchial smooth muscle (bronchodilation) and includes the mechanism of inhibition of mast cell degranulation, thereby reducing the cellular release of mediators. The resulting physiological effect is a decrease in resistance within the conducting airways.


️ Intrinsic Mechanistic Constraints

The drug’s mechanism is constrained by the potential for receptor desensitization (tachyphylaxis) with overuse, which progressively weakens the response. Furthermore, its selectivity for beta2-AR can be overcome at high systemic levels, introducing off-target agonism of beta1-adrenergic receptors and resulting in beta1-mediated activity.

Dosage and Administration Information

Administration Guidelines

Pulmobron (terbutaline sulfate) is administered through multiple approved routes, providing options for both sustained maintenance and rapid response to acute symptoms. These routes include Oral (tablet or solution), Subcutaneous (SC) injection, and Inhalation (powder or nebulizer solution).


Standard Dosing and Frequency

The usage pattern is defined by the dose form. The oral tablet is generally prescribed for divided use in adults, taken three times daily (TID) at approximately six-hour intervals during awake hours. Dosing typically begins at 2.5 mg per dose and may increase, but the total oral dosage must not exceed 15 mg within a 24-hour period.

Administration Route Standard Adult Dose Maximum Dosing Constraint
Oral (Tablets) 2.5 mg to 5 mg TID 15 mg total in 24 hours
Subcutaneous (SC) 0.25 mg per injection 0.5 mg total in 4 hours

Procedural and Population Constraints

The subcutaneous injection is typically administered into the lateral deltoid area. For acute symptoms, an SC dose may be repeated after 15 to 30 minutes, provided the overall four-hour maximum is not surpassed. The medicine can be taken with or without food.

Dosing guidelines are adjusted for younger individuals. For adolescents aged 12 to 15 years, the maximum total oral dosage permitted is 7.5 mg within a 24-hour period. Use of the oral tablet is not recommended for children under 12 years of age.

Recent Clinical Evidence

Recent Clinical Evidence


Mechanism of Action

Research examined the study compound's influence on measures of disease-related activity and symptoms. Evidence suggests that the study compound acts on specific cellular pathways associated with chronic inflammatory conditions. This line of research explores how the compound may be involved in modulating the body's response to these long-term challenges.

Efficacy Studies

Joint Mobility and Pain

Studies have explored the effects of this combination on measures of joint mobility and pain in adults with moderate-to-severe disease. Research evaluated the combination compared to standard treatments, with some reports noting differences in studied outcomes. Findings related to patient-reported pain scores were varied across trials.

Flare-up Frequency

Clinical studies have evaluated whether use of the compound is associated with changes in the frequency and severity of disease flare-ups over a period of up to 52 weeks. These evaluations track changes in disease markers and the number of acute episodes reported by participants.


Safety and Long-Term Outcomes

Research has explored the tolerability and adverse event reporting associated with this compound, primarily through randomized controlled trials. Individuals with certain pre-existing conditions, such as kidney impairment, were sometimes excluded from or monitored closely during studies to ensure participant safety. Information regarding study exclusions or monitoring is available in published reports.

Some research has also investigated outcomes related to extended use, examining patient status and potential side effects over periods exceeding one year. Researchers continue to assess the long-term profile of the compound.

Key Studies & References

  1. Effectiveness of Mobilization with Movement on the Management of Knee Osteoarthritis: A Systematic Review of Randomized Controlled Trials

Frequently Asked Questions (FAQ)

Common questions about Pulmobron (FAQ)

Q: How quickly does Pulmobron start working after taking it?

A: Official product information indicates that the drug has a rapid effect, consistent with its use for immediate symptom management. After a subcutaneous injection, a measurable change in breathing can occur within 5 minutes, with a noticeable clinical effect typically observed within 15 minutes. Inhaled forms of the medicine are also generally designed to begin acting quickly after administration.

Q: What are the most common side effects patients report from using Pulmobron?

A: According to regulatory documents, the most commonly reported adverse reactions are related to the central nervous system and the heart. These often include feelings of shakiness (tremor), nervousness, and headaches. A fast, pounding, or irregular heartbeat (palpitations) is also frequently reported in official safety profiles.

Q: Is it possible to feel shaky or have a faster heartbeat after using Pulmobron?

A: Yes, official labeling notes that these effects are possible and are among the most frequently reported. Shakiness (tremor) and a fast, irregular, or pounding heartbeat (palpitations) are common effects associated with this type of medicine. These effects relate to how the drug interacts with the body's adrenergic receptors.

Q: Does Pulmobron have a chance of causing nervousness or trouble sleeping?

A: Yes, the official Summary of Product Characteristics lists nervousness as a commonly reported effect. Difficulty falling asleep or staying asleep (sometimes referred to as insomnia) has also been reported as a less common side effect. Concerns about side effects can be discussed with a healthcare provider during treatment reviews.

Q: Can Pulmobron be used by children, and is the safety profile different for them?

A: The oral tablet and injectable forms of Pulmobron are indicated for patients aged 12 years and older. Use of these forms in children younger than 12 years of age is not recommended, as specific safety and efficacy profiles have not been established for that age group. The full official documentation provides details regarding age and use conditions.

Q: Are the research studies on Pulmobron long-term (lasting more than a few months)?

A: Regulatory documents include information derived from studies that track patient outcomes and tolerability over extended periods. This involves assessing the compound's profile over time, with some assessments looking at periods exceeding one year. These research efforts are part of the ongoing assessment of the compound’s profile during extended use.

Q: Is Pulmobron safe to use if I have heart problems or high blood pressure?

A: Official labeling advises that this medicine should be used with caution in individuals who have pre-existing cardiovascular disorders. This includes conditions such as high blood pressure (hypertension), certain heart rhythm problems (cardiac arrhythmias), or ischemic heart disease. This caution is due to the drug’s potential effects on heart rate and blood pressure.

Q: How often are patients usually monitored after starting Pulmobron treatment?

A: Official documents caution that needing to use the medication more frequently than prescribed may warrant immediate discussion with a healthcare provider. The labeling advises that this may be viewed by a healthcare provider as an indication that a reassessment of the treatment plan is appropriate.

Q: Are there any specific foods or drinks that should be avoided when taking Pulmobron?

A: The official product labeling for Pulmobron does not specify any particular foods or drinks that need to be strictly avoided. The oral form of the medication can be taken either with food or without it, based on a patient's preference.

Q: Is it safe to use Pulmobron during pregnancy or while breastfeeding?

A: The injectable and oral forms of Pulmobron carry a boxed warning that strictly contraindicates their use for prolonged labor suppression (tocolysis). For other conditions, caution is advised regarding use during pregnancy, especially near term. Because the drug is excreted into human milk, cautious use is also generally recommended for those who are breastfeeding.

Q: Can Pulmobron be taken at the same time as cold and flu medicine?

A: Many over-the-counter cold and flu products contain ingredients, such as sympathomimetic agents, that act similarly to Pulmobron. The regulatory labeling advises against the concurrent use of Pulmobron with other sympathomimetic agents. This combination may increase the potential risk of side effects, particularly those affecting the cardiovascular system.

Q: What if I forget a dose of Pulmobron—is it safe to take it later?

A: Official information provides general guidance regarding a missed dose. Typically, if a dose is missed, regulatory information advises consulting the product information to determine whether to take the dose when remembered or skip it and continue the regular schedule. Regulatory guidance often includes a warning not to double the dose.

Q: How is Pulmobron different from a steroid-containing inhaler?

A: Pulmobron is officially classified as a beta2-agonist, which is a type of bronchodilator used to relax the airways. It is not an anti-inflammatory medicine like a corticosteroid (steroid). Official warnings emphasize that using a beta-agonist alone may not be sufficient for conditions like asthma and that anti-inflammatory agents are often considered essential components of treatment plans.

Q: Can Pulmobron be used in combination with other types of inhalers?

A: Official labeling states that the use of a combination with certain other sympathomimetic agents is not recommended due to possible cardiovascular effects. However, the label does not restrict the use of other types of inhalers that do not fall under this category, such as inhaled corticosteroids, when discussing treatment options with a healthcare provider.

Q: What is the role of Pulmobron in a complete COPD treatment plan?

A: Pulmobron is used to help manage bronchospasm associated with chronic obstructive pulmonary disease (COPD). It is utilized for the prevention and reversal of airway tightening and can be used for immediate symptom relief. However, the medicine is not indicated for the management of acute respiratory symptoms or acute exacerbations of COPD.

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

A: According to the official Summary of Product Characteristics from regulatory bodies, the medicine does not affect a person's ability to drive vehicles or operate heavy machinery. However, patients should be mindful that potential side effects like dizziness and nervousness are listed in the safety profile.

Q: Does the efficacy of Pulmobron decrease over time with continued use?

A: The drug's mechanism of action involves the potential for receptor desensitization, which means the body's response could progressively weaken over time, a phenomenon known as tachyphylaxis. The official label warns that if the usual dose becomes less effective, it may be an indicator of a worsening of the underlying condition and should be discussed with a healthcare provider.

Q: Can Pulmobron be used by people with asthma, or is it only for COPD?

A: Pulmobron is officially indicated for managing bronchospasm associated with both asthma and COPD in eligible patients. However, the regulatory documents contain a restriction that states it is strictly contraindicated for use as monotherapy in asthma. It should be used only alongside other appropriate asthma medications.

How should Pulmobron be stored and disposed of?

The storage and disposal instructions for Pulmobron (Terbutaline sulfate) are defined by the specific formulation to maintain product stability and safety.

Storage Conditions

Formulation Temperature and Protection Stability Constraint
Tablets Store at room temperature, tightly closed, protected from moisture and direct light. Do not freeze. Keep container closed.
Liquids (Nebuliser/Injection) Store below 25°C or 30°C, protected from light. Do not freeze. Use opened vials right away; open nebuliser units must be used within 24 hours.

Handling and Disposal

All Pulmobron products must be stored out of the sight and reach of children.

Unused or expired medication must be disposed of in accordance with local requirements for pharmaceutical waste. Used needles and syringes from the injection solution must be discarded in a hard, puncture-proof container.

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

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