Mucosin SR

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Mucosin SR

Property Description
Active ingredient Ambroxol hydrochloride
Form Sustained-Release (SR) capsules
Pharmacological class Mucolytic and Secretolytic agent
Common purpose Easing the clearance of thick mucus
Origin Synthetic derivative of Bromhexine

What is Mucosin SR and What Type of Medicine is It?

Mucosin SR is a specific pharmaceutical preparation for oral administration primarily categorized as a mucolytic agent and secretolytic agent. The designation SR formulation signifies a Sustained-Release or Extended-release capsule designed to deliver the medicine consistently over a prolonged period. The drug is recognized for its action in modifying the consistency and volume of respiratory secretions. The extended-release mechanism contrasts with immediate-release forms, aiming to maintain a steady concentration of the active substance for a continuous therapeutic effect.

Composition and Origin: Is Ambroxol a Synthetic Drug?

The active substance contained within Mucosin SR is Ambroxol hydrochloride, which is a single-ingredient product (monopreparation). Chemically, Ambroxol is a synthetic derivative of the related compound Bromhexine, highlighting its pharmacological origin. This structure is key to its identity as a secretolytic agent. The specific capsule formulation is engineered with excipients that control the rate at which the Ambroxol hydrochloride is released into the system, supporting the convenience of the extended-action dosage form. Ambroxol functions by liquefying mucus and stimulating ciliary activity.

General Purpose: What Does a Secretolytic Agent Do?

The general purpose of a secretolytic agent is to aid the body in clearing the respiratory tract of thick, viscous mucus. Ambroxol hydrochloride achieves this by facilitating thinning of secretions through the depolymerization of specific mucus components. Furthermore, it supports enhanced clearance (Mucokinesis) by stimulating the natural processes that move mucus out of the airways. This overall function ensures that the drug's role is specifically to liquefy and promote the expulsion of phlegm, thereby supporting the natural cleaning mechanisms of the bronchial passages, particularly in scenarios characterized by excessive, tenacious mucus.

Regulatory References

  1. Ambroxol and Bromhexine containing medicines - EMA Referral

What side effects are possible with Mucosin SR?

Possible Side Effects and Safety Information

The safety profile for Ambroxol hydrochloride (the active ingredient in Mucosin SR) is structured by regulatory authorities based on the frequency and type of documented adverse reactions. These effects are classified according to standard international criteria.


Frequency-Classified Adverse Reactions

Adverse reactions are organized by system-organ class. Common effects, reported in up to 1 in 10 users, typically involve the gastrointestinal system and the nervous system, and include nausea, altered sense of taste (dysgeusia), and reduced sensation in the mouth or throat (oral/pharyngeal hypoesthesia). Uncommon effects, reported in up to 1 in 100 users, may include vomiting, diarrhoea, abdominal pain, indigestion (dyspepsia), dry mouth, and fever.

Rare effects, reported in up to 1 in 1,000 users, include hypersensitivity reactions, rash, and urticaria (hives). Reactions with a frequency that cannot be estimated from available data include serious systemic allergic responses like anaphylactic reactions (including anaphylactic shock) and angioedema.


Serious Safety Considerations

The most serious adverse reactions documented in regulatory sources are the Severe Cutaneous Adverse Reactions (SCARs), which include Stevens-Johnson syndrome (SJS), Toxic Epidermal Necrolysis (TEN), and Erythema multiforme. While rare, these skin reactions are officially noted to occur during ambroxol administration.

Official safety restrictions advise caution for patients with severe hepatic impairment or renal insufficiency, as metabolite accumulation may occur. Use is not recommended during the first trimester of pregnancy. Furthermore, regulatory labels contain an explicit restriction that co-administration with cough suppressants can lead to the dangerous accumulation of bronchial secretions and subsequent airway obstruction due to the suppressed cough reflex.

Overdose and Emergency Response

Overdose and when to seek help

Property Official Regulatory Statement (Ambroxol Hydrochloride)
Documented overdose presentations The documented clinical manifestations of overdose are generally consistent with known adverse effects observed at therapeutic doses. These presentations primarily involve gastrointestinal disturbances, including symptoms such as nausea, vomiting, diarrhea, heartburn, and dyspepsia. More pronounced signs, such as excessive salivation and restlessness, may be observed in cases of extreme overdosage.
Severity classification Official regulatory documents classify ambroxol overdose as having low acute toxicity in humans. Importantly, no severe signs of intoxication or life-threatening manifestations are commonly reported in the medical literature or regulatory experience following the ingestion of excessive amounts.
Immediate actions required Immediate medical attention or consultation with a doctor or poison center is strictly mandated by regulatory labeling. This action is required upon the ingestion of any amount that exceeds the maximum recommended dosage.
Antidote and management Treatment is strictly limited to symptomatic and supportive measures, as the official labeling states that no specific antidote is known. Acute procedural interventions, such as induced vomiting or gastric lavage, are generally not indicated but may be considered only in scenarios of extreme and recent ingestion.

Connection to the overall overdose profile: The official profile defines the overdose risk as low acute toxicity with a focus on managing transient gastrointestinal symptoms. Regulatory guidance mandates seeking professional medical advice immediately after any over-ingestion, which is the required trigger for medical supervision and the application of supportive care.

Therapeutic Uses of Mucosin SR

What Mucosin SR Treats: Main Uses and Benefits

Mucosin SR (Ambroxol SR) is generally used to address conditions presenting with systemic or localized discomfort related to excessive, thick, and sticky mucus. Its use plays a role in managing the overall burden of symptoms related to impaired airway clearance, offering supportive relief in key symptomatic domains.

Medicines containing ambroxol are intended to assist with the clearance of mucus in individuals with short- or long-term diseases of the lungs or airways.

The medication is commonly applied in the context of conditions characterized by periods of heightened symptoms such as chronic bronchitis, COPD, and acute respiratory infections where abnormal mucus production is present. It is relevant when supportive symptom management is appropriate and contributes to improved comfort during periods of heightened symptoms, as it assists with the movement of thick phlegm. The symptomatic support provided is relevant for difficulty expectorating, a productive cough that is effortful, and pronounced congestion.

Easing Chronic and Acute Airway Secretory Disorders

This medication is applied across domains where additional symptomatic support is needed, particularly in long-term management where the sustained-release formula supports continuous management of the symptomatic burden. It may also be part of symptomatic management during acute flares or infections, when the clinical situation involves acute or unstable symptom patterns.

Quick Fact: Symptomatic Support for Effortful Productive Cough

Eligibility and Restrictions for Use

Eligibility for Mucosin SR (Ambroxol Sustained-Release)

Official regulatory documents define the eligible and non-eligible populations for Mucosin SR (Ambroxol SR) based on age, physiological status, and underlying conditions. The sustained-release formulation is primarily intended for use by adults and adolescents.

Population Group Regulatory Status Constraint Basis
Adults and Adolescents Approved for those 12 years of age and older [3.3] Age-group approval for SR dose [2.5]
Children Not recommended for the SR form in individuals under 12 years [2.5, 3.3] Age-based restriction for formulation [2.7]
Hypersensitivity Contraindicated [1.1, 1.2] Known allergy to Ambroxol or Bromhexine [3.4]
Pregnancy Not recommended during the first trimester [1.1, 2.1] Precautionary measure [2.3]
Lactation Not recommended [1.2, 2.5] Excretion of drug in breast milk [3.4]
Severe Organ Impairment Conditional use; requires medical supervision [1.2, 2.3] Risk of metabolite accumulation (renal/hepatic) [2.4]

Use is contraindicated in patients with a known hypersensitivity reaction to the active ingredient, Ambroxol hydrochloride, or to the related substance, Bromhexine [1.1, 1.2]. Furthermore, official labeling advises caution for patients with a history of peptic ulcer disease [2.5] or disorders of secretion discharge [1.2]. For pregnant women, use is not recommended during the initial three months as a precaution [2.1], and it is also not recommended for nursing mothers [1.2, 2.5].

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Ambroxol hydrochloride (Mucosin SR) documents specific interaction patterns concerning other medicines and certain health conditions.

Documented Interaction Patterns

The primary restriction noted in prescribing information concerns antitussive agents (cough suppressants). Co-administration with these products is formally not recommended because the suppression of the cough reflex can prevent the clearance of the thinned mucus, resulting in secretion retention and a risk of airway obstruction.

Conversely, a beneficial pharmacodynamic interaction is documented with certain antibiotics. When Ambroxol is administered alongside antibiotics such as Amoxicillin, Cefuroxime, Erythromycin, and Doxycycline, an officially observed outcome is an increase of the antibiotic concentration within the pulmonary tissue and sputum.

Exposure and Population-Specific Notes

Official regulatory documents generally state that no other clinically relevant unfavourable interactions with other commonly co-administered medications have been reported. However, specific population constraints are noted:

  • Severe Hepatic Impairment: This condition reduces the clearance of ambroxol, which can lead to higher plasma exposure of the active substance.
  • Serious Renal Impairment: In this population, the accumulation of hepatic metabolites of ambroxol should be expected, as noted in the prescribing information.

No timing-based separation rules or specific interactions with food or herbal products are mandated in the official label text.

Mechanism of Action

Modulation of Secretion Viscosity (Secretolytic Action)

Ambroxol primarily acts on Type II Pneumocytes to stimulate the synthesis and release of Pulmonary Surfactant. This mechanism causes the surfactant layer to integrate with thick respiratory secretions, resulting in a reduction of the mucus's adhesiveness and viscosity and an increase in its hydration.


Airway Transport Enhancement (Mucokinesis)

The molecule exerts a mucokinetic effect by modulating specific ion channels in ciliated epithelial cells, leading to an increased Ciliary Beat Frequency (CBF). By accelerating the physical transport rate of the modified mucus layer, this mechanism increases the body's Mucociliary Clearance (MCC) system.


Local Sensory Nerve Blockade

A supplementary mechanism involves a local anesthetic action through the blockade of specific voltage-gated Na^+ channels (like Na v1.8) on the sensory nerve endings in the airway lining. This neurophysiological interference reduces the electrical signaling, leading to a direct local decrease in airway afferent nerve excitability.

Dosage and Administration Information

How to Use Mucosin SR: Official Administration Guidelines

This section explains the general principles of administering Mucosin SR (Ambroxol Hydrochloride 75 mg Sustained-Release Capsule), focusing strictly on standardized usage instructions.


Administration Protocol

The formulation is intended for Oral Use and is typically administered as a fixed dose of one capsule containing 75 mg of Ambroxol hydrochloride. The design of the medicine simplifies the dosing schedule to once daily (q.d.), which is its primary usage pattern in clinical practice. The capsule may be taken either in the morning or evening, with or without food.

Administration requires the capsule to be swallowed whole with an ample amount of liquid; it must not be crushed, opened, or chewed to ensure the sustained-release mechanism functions as intended and to prevent premature release of the active ingredient.


Usage Patterns and Population Rules

Feature Official Usage Instruction
Dosing Schedule One capsule (75 mg) once daily, intended for adults and adolescents aged 12 years and over.
Duration of Use For continuous use, treatment should not generally exceed 4-5 days without medical supervision; it may be used as part of a longer-term treatment plan under professional guidance.
Special Populations The 75 mg SR form is not recommended for children under 12 years. In cases of severe renal or hepatic impairment, the dose should be reduced or the dosing interval must be extended.
Missed Dose Rule If administration is forgotten, the patient should not take a double dose to compensate, but instead resume the once-daily schedule with the next planned dose.

These instructions define the standardized, label-based approach for the correct use of the sustained-release medicine.

Recent Clinical Evidence

The clinical evidence for Mucosin SR is derived from studies of its active ingredient, Ambroxol hydrochloride. Research explores how symptoms change over time, primarily relying on Randomized Controlled Trials (RCTs) and systematic reviews.


Evidence in Chronic Conditions

For chronic airway secretory disorders like Chronic Bronchitis and COPD, long-term, placebo-controlled clinical trials constitute a major part of the evidence. These studies monitored adult patients, examining outcomes related to patient discomfort and tracking the frequency of acute disease exacerbations (flares) and the use of supplemental antibiotics over several months. Research explored the ingredient's relationship to maintaining status and daily functioning. Studies tracked the number of symptomatic episodes, but findings related to changes in key lung function parameters, such as FEV1, were mixed across the evidence base.


Evidence in Acute Conditions

For acute respiratory conditions, evidence stems from short-term, randomized, and placebo-controlled trials typically lasting five to eight days. These studies explored outcomes reflecting daily functioning, such as changes in the subjective difficulty of expectoration and objective sputum property scores. Research highlights changes measured during these short periods, contributing insight into the active ingredient's role in short-term management.


Limitations and Research Gaps

A primary limitation is that evidence quality varies across the existing body of research. There is also limited information for long-term outcomes beyond six months in many studies. Furthermore, certainty remains low regarding the research findings for pediatric patients under the age of six, as data for this specific subgroup are often insufficient.

Frequently Asked Questions (FAQ)

Common questions about Mucosin SR (FAQ)

Q: Is Mucosin SR the same kind of medicine as other cough suppressants?

No, Mucosin SR is fundamentally different. It is officially classified as a mucolytic and secretolytic agent, meaning it helps thin and clear mucus.

Due to the risk of mucus retention, official warnings advise against using it concurrently with cough suppressants (antitussive agents).


Q: Does Mucosin SR help with different types of chest congestion?

Official indications relate to acute and chronic airway disorders specifically associated with the production of thick, viscous mucus.

The drug's action is aimed at thinning these specific secretions and improving their transport from the lungs, which is intended to help relieve congestion associated with excessive phlegm.


Q: How quickly does Mucosin SR usually start to work?

As a sustained-release formulation, the medicine is designed to maintain consistent levels of the active ingredient over a long duration.

Official pharmacokinetic data suggest that the time needed to reach the highest concentration in the bloodstream is approximately 6.5 hours.


Q: Can people with high blood pressure generally use Mucosin SR?

Official regulatory documents list specific conditions and known allergies that restrict the use of the medicine.

Official regulatory information does not list high blood pressure (hypertension) as a specific warning or contraindication for this medicine.


Q: Is Mucosin SR considered a safe medicine for older adults?

The medicine is generally indicated for use in the adult population. Official regulatory information does not contain a specific dose adjustment or safety caution for the general elderly population, but notes that caution is advised only for those with severe kidney or liver impairment.


Q: Do you need a prescription from a doctor for Mucosin SR?

The legal supply category of Mucosin SR is determined by the official health authority in each country or region where it is sold.

The status, whether it is available over-the-counter or requires a prescription, may vary by location.


Q: Is Mucosin SR known to cause drowsiness or affect driving?

Official regulatory documents do not list drowsiness as a common side effect of the medicine.

Based on post-marketing experience, the medicine is not generally expected to affect a person's ability to drive or use heavy machinery.


Q: Is Mucosin SR a drug that needs to be stopped slowly?

Official administration instructions and warnings do not contain any guidance or information about the need to slowly reduce the dose of Mucosin SR before stopping treatment.


Q: Can Mucosin SR be taken if I already use cold medication with a decongestant?

Regulatory information focuses on a known restriction with cough suppressant medicines.

The official label does not document any other clinically relevant unfavorable interactions with commonly co-administered medicines, including cold medications that primarily contain decongestants.


Q: Does Mucosin SR have any known major interactions with common pain relievers?

According to the official product information, there are no documented unfavorable interactions with commonly co-administered medications, with the primary exception being cough suppressants.

This general statement covers common pain relievers, which are not specifically noted as interacting with the medicine.


Q: Are there different strengths available for Mucosin SR?

The specific formulation designated as Mucosin SR is a 75 mg sustained-release capsule.

Official documents confirm that this is the listed strength for the sustained-release form of the medicine.


Q: What are the signs of a serious allergic reaction to Mucosin SR?

Official regulatory documents describe rare but serious systemic reactions, such as anaphylaxis and angioedema.

Clinical descriptions often mention that these reactions may involve swelling of the face, throat, or tongue, and sudden difficulty breathing.


Q: Does Mucosin SR contain any ingredients that are related to codeine or narcotics?

No. The active ingredient, Ambroxol hydrochloride, is classified as a mucolytic and secretolytic agent.

Official sources identify it as a synthetic derivative of Bromhexine, and it is not a narcotic or chemically related to codeine.


Q: Does Mucosin SR interact with blood pressure medication?

Official documents state that, aside from the restriction against using it with cough suppressants, no other clinically relevant unfavorable interactions with commonly co-administered medications have been reported.

This general statement includes typical blood pressure medications.


Q: If Mucosin SR doesn't seem to be working, what is the standard timeframe before talking to a doctor?

Official administration guidelines indicate that continuous use of the medicine should generally not exceed 4 to 5 days without supervision from a healthcare professional.

This limit guides the appropriate duration of non-prescribed use.


Q: Can I use Mucosin SR for a dry cough?

The medicine is indicated for conditions involving abnormal thick mucus secretion and impaired mucus transport (phlegm).

Its mechanism is to liquefy and aid the clearance of this phlegm, suggesting it is intended for a wet, productive cough rather than a dry cough.


Q: What are the known interactions with medications for depression or anxiety?

Official product information indicates that no clinically relevant unfavorable interactions have been reported with commonly co-administered medications, with the exception of cough suppressants.

This general description applies to most medications used for depression or anxiety.


Q: Can Mucosin SR affect the results of certain medical tests?

Interference with common blood tests or laboratory results is not typically documented in the official patient information provided by regulatory authorities.


Q: Are there any specific warnings about using Mucosin SR with alcohol?

Official regulatory documents list precautions and warnings for interactions with other medications.

These documents do not include a specific warning or precaution regarding the use of Mucosin SR alongside alcohol.


Q: Is it described anywhere that Mucosin SR helps with shortness of breath?

Official indications focus on the medicine's role in thinning and clearing viscous mucus in the respiratory tract.

The information does not describe the medicine as a direct treatment or management for shortness of breath.


Q: Is it possible to become dependent on Mucosin SR?

Official regulatory documents list special warnings related to the potential for abuse or dependence for certain medicines.

These official documents do not contain any information indicating that the use of Mucosin SR may lead to physical dependence or addiction.


Q: Does Mucosin SR contain sugar, making it unsuitable for diabetics?

The official list of ingredients, or excipients, for the Mucosin SR sustained-release capsule does not typically list sugar (sucrose or glucose) among the primary components.

How should Mucosin SR be stored and disposed of?

How to Store and Dispose of Mucosin SR

The storage and disposal of Mucosin SR (Ambroxol Hydrochloride SR capsules) must adhere strictly to the conditions specified in official regulatory labeling to ensure product stability and safety.


Official Storage Requirements

Storage Domain Required Condition
Temperature Store at a temperature not exceeding 30°C.
Protection Keep away from light, heat, and moisture.
Packaging Keep the capsules in the original packaging (blister pack/carton).
Child Safety Keep out of the sight and reach of children.

Disposal Instructions

Any unused or expired Mucosin SR must be handled as pharmaceutical waste. Do not dispose of the capsules by pouring them down a drain or throwing them into household waste unless local regulations specifically permit it. The product and its packaging must be discarded according to local, regional, or national waste disposal regulations, avoiding release into the environment or waterways.

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

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