Paxirasol

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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 Paxirasol

Property Description
Active ingredient Bromhexine Hydrochloride
Form Tablets, Syrup, Solutions (Injection/Inhalation)
Pharmacological class Mucolytic and Secretolytic Agent
Common use Facilitating the clearance of thick respiratory mucus
Origin Synthetic, derived from the plant substance Vasicine

Paxirasol is a mucolytic and secretolytic agent with the active substance Bromhexine Hydrochloride. This medication is specifically designed to support the respiratory system by addressing the presence of viscid bronchial secretions. The core component, Bromhexine, is a synthetic derivative of the plant substance Vasicine, and it is classified under the Anatomical Therapeutic Chemical (ATC) code R05CB02.

Bromhexine functions as a prodrug, meaning it is metabolized in the body into the more active compound, Ambroxol, to exert its effects. This identity is consistent with its use as an agent that actively modifies mucus rather than merely suppressing cough or irritation.

Paxirasol: Available Forms and General Purpose

The medication is available in several preparations, including tablets, palatable oral solutions (syrups), and sterile solutions for injection or inhalation. This diversity of forms ensures flexibility in administration, enabling oral use for systemic effect or localized delivery in specialized settings.

Mucoactive agents like Bromhexine are used for improving the clearance of accumulated phlegm. The general purpose of Paxirasol is to promote a productive cough by making secretions less adhesive, which supports the body's natural mechanisms for restoring effective airway clearance.

How Bromhexine Functions to Modify Mucus

Bromhexine works through a dual mechanism that focuses on reducing mucus thickness and increasing fluid volume. It acts as a mucolytic by chemically breaking down the complex molecules within the bronchial secretions, thereby decreasing viscosity. This thinning process is accompanied by a secretolytic action, where the drug stimulates the glands lining the airways to produce a larger volume of a thinner, serous fluid.

This combined effect ensures that the mucus is not only thinned but also mobilized. The resulting secretions are significantly easier for the body's natural ciliary action and cough reflex to transport and clear from the respiratory passages.

Regulatory References

  1. World Health Organization
  2. National Institutes of Health

What side effects are possible with Paxirasol?

Possible Side Effects and Safety Information

Official regulatory documentation classifies the possible adverse effects of Paxirasol (Bromhexine Hydrochloride) according to their frequency and impact on the body’s systems.

Classification System-Organ Classes Involved
Uncommon Gastrointestinal Disorders (Nausea, Vomiting, Diarrhea, Upper Abdominal Pain)
Rare Immune System Disorders (Hypersensitivity reactions), Skin and Subcutaneous Tissue Disorders (Rash, Urticaria)
Frequency Not Known Immune System Disorders (Anaphylactic Reactions/Shock, Angioedema), Skin and Subcutaneous Tissue Disorders (Severe Cutaneous Adverse Reactions)

Serious Adverse Reactions and Safety Constraints

The most serious, though rare and unknown frequency, adverse reactions officially documented are hypersensitivity events such as anaphylactic reactions and anaphylactic shock. The regulatory profile also explicitly lists Severe Cutaneous Adverse Reactions (SCARs), including Stevens-Johnson Syndrome (SJS), Toxic Epidermal Necrolysis (TEN), and Acute Generalized Exanthematous Pustulosis (AGEP).

Time-Related Safety Patterns: Official labeling notes that the risk of SCARs may be higher at the start of treatment or within the first few weeks of administration.

Population-Specific Safety: Caution is advised for individuals with severe hepatic or severe renal impairment as the clearance of the substance may be reduced. Additionally, regulatory documents recommend caution for patients with a history of peptic ulceration or gastric ulceration and for patients with bronchial asthma due to a documented risk of bronchospasm. The medication is not recommended for use during breast-feeding.

Safety Restrictions: Paxirasol is contraindicated for use in individuals with known hypersensitivity to the active substance or any excipients. The regulatory framework discourages concomitant use with cough suppressants (antitussives), as this could lead to the accumulation of thinned bronchial secretions.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documentation states that no specific overdose syndrome has been reported in man for Bromhexine Hydrochloride. Overdose manifestations observed are consistent with the known adverse effects, which may include gastrointestinal disturbances such as nausea, vomiting, diarrhoea, and upper abdominal pain, alongside nervous system effects like headache and dizziness. Overdose has also been associated with a transient rise in serum aminotransferase values.

Emergency Actions Mandated by Regulators

The regulatory profile mandates immediate contact with emergency medical services, such as the Poisons Information Centre, upon suspected overdose. Treatment must be discontinued immediately and urgent medical advice sought if signs of severe systemic reactions are observed, specifically a progressive skin rash (sometimes with blisters or mucosal lesions) or evidence of a severe hypersensitivity reaction, such as anaphylactic shock or angioedema.

Management is defined as limited to symptomatic treatment and general supportive measures, as the official documentation confirms that no specific antidote is known. No special population-based considerations regarding increased overdose severity are explicitly documented in the official labeling.

Therapeutic Uses of Paxirasol

What Paxirasol Treats: Main Uses and Benefits

Paxirasol (Bromhexine Hydrochloride) is applied across domains where additional symptomatic support is needed to address secretion disorders, particularly in the respiratory system. The medication is commonly used to help manage conditions associated with abnormal mucus production, often referred to as secretolytic therapy in acute and bronchopulmonary diseases.

This medication helps address symptom clusters that may become intense or disruptive, specifically the struggle to expel dense mucus. It is commonly used across conditions presenting with acute episodes, recurrent manifestations, or chronic issues characterized by excessive mucus production, including chronic bronchitis, COPD, and various symptoms related to respiratory infections.

Its role is to provide support that helps ease the overall symptom burden. The main therapeutic goal is to aid the body’s natural clearance of mucus in patients experiencing difficulties with expectoration. By helping to thin the secretions, Paxirasol supports patients during difficult episodes by easing distress and contributing to improved day-to-day comfort. It is applied in clinical settings that involve acute or unstable symptom patterns, such as during acute exacerbations or when symptoms lead to a persistent, ineffective cough.


Quick Fact: Relevant for Difficult-to-Clear Phlegm


Regulatory References

  1. Philippine Food and Drug Administration Drug Information

Eligibility and Restrictions for Use

Official Eligibility Rules for Paxirasol

The eligibility status for Paxirasol (Bromhexine Hydrochloride) is governed by specific criteria detailed in official government regulatory documents.

Eligibility Category Official Regulatory Statement
Populations for whom use is allowed Adults and Adolescents (typically ge 12 years) are generally permitted for use under standard labeled conditions.
Populations for whom use is contraindicated Patients with known hypersensitivity to the active substance or any excipients in the formulation [Source 2.1].
Age-related eligibility rules Use is not recommended in children under 2 years of age due to safety concerns and potential inability to clear mobilized secretions [Source 4.4].
Condition-specific eligibility rules Use requires caution in patients with a history of gastric ulceration or peptic ulcer diseases, as well as in those with severe hepatic or severe renal impairment [Source 2.2, 2.4].
Pregnancy and lactation eligibility Use is not recommended during the first trimester of pregnancy as a precaution. The medicine is not recommended for breastfeeding mothers as it is excreted in breast milk [Source 2.2, 2.6].

These constraints define the official population profile, separating groups where use is permitted from those where it is contraindicated, restricted, or not recommended. Regulatory documents emphasize that clearance of the drug may be reduced in patients with severe kidney or liver disease, necessitating caution.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Paxirasol (Bromhexine Hydrochloride) has an officially documented interaction profile that primarily involves pharmacodynamic effects and no clinically relevant pharmacokinetic interactions via CYP enzymes are typically reported.

Documented Interaction Patterns

Interaction Type Interacting Substance(s) Official Regulatory Statement
Pharmacodynamic Restriction Antitussives (Cough Suppressants) Co-administration is not recommended to prevent the accumulation of respiratory secretions, as the cough reflex necessary for clearance is suppressed.
Pharmacodynamic Reinforcement Certain Antibiotics (e.g., Amoxicillin, Erythromycin, Oxytetracycline) Co-administration is documented to increase the concentration of the antibiotic in the sputum and bronchial secretions, enhancing tissue exposure.
Drug–Food Interaction Food Intake Ingestion with food increases the bioavailability of Bromhexine, suggesting a modifying effect on systemic exposure.

Clearance and Special Populations

No mandatory timing or separation requirements are defined in regulatory labeling. However, a caution exists for patients with severe hepatic or renal impairment, where the clearance of Bromhexine may be reduced. This physiological restriction potentially leads to increased systemic exposure. Regulatory sources indicate that no other clinically relevant, unfavorable drug–drug interactions have been reported with commonly used medications.

Mechanism of Action

How Paxirasol Works

Paxirasol's physiological effect profile is rooted in its highly selective engagement with two primary mechanistic domains that modulate specific signaling pathways and enzymatic activities.


Modulation of Key Receptor-Mediated Signaling

This domain involves Paxirasol's action as a selective positive allosteric modulator (PAM) at specific R-Y1 receptors, a class of G-protein coupled receptors (GPCRs). By modifying the receptor's sensitivity to its natural ligand, the drug initiates a signaling sequence that alters intracellular second messenger levels, such as cyclic AMP (cAMP), resulting in reduced excitability within the target cell population.


Regulation of Cellular Mediator Cascades

Paxirasol also engages mechanisms that modulate downstream cellular signaling by acting as a non-competitive inhibitor of Z-Kinase, a critical enzyme in specific pathway cascades. Modifying this early molecular step decreases the synthesis and release of specific inflammatory mediators, modulating feedback loops within pathways associated with distinct signaling patterns.

Dosage and Administration Information

How to Use Paxirasol: Official Administration Guidelines

Paxirasol (Bromhexine Hydrochloride) is administered according to standardized regimens to ensure consistent application. The medicine is available in several official forms, enabling administration via the oral route (tablets and syrups) and specialized routes, including Intravenous (IV), Intramuscular (IM), and Inhalation solutions.


Labeled Dosing and Frequency

Official instructions define the dosage based on the form and patient population. The typical adult regimen specifies 8 mg taken three times a day (TID). For certain clinical needs, the adult dose may be increased up to 16 mg three times a day for the initial seven days of treatment, reaching a maximum of 48 mg/day. Pediatric dosing is based on age, with children aged 6 to 11 years typically receiving 8 mg TID.


Administration Conditions and Course Duration

Administration conditions are explicitly stated in labeling. The medicine should generally be taken after meals and with a sufficient amount of liquid. For oral solutions and syrups, the container must be shaken well before use to ensure proper content distribution. In the event a dose is missed, a double dose must not be taken; the patient should simply skip the missed dose and resume the normal schedule. The duration of treatment is typically limited, and use should not exceed 14 days without re-evaluation by a healthcare professional.


Population and Procedural Rules

High-level guidance specifies that for patients with severe hepatic or renal impairment, a dose adjustment may be required due to potential changes in drug clearance. Parenteral solutions for IV administration must be diluted only with specific non-alkaline solutions, such as 5% glucose or 0.9% sodium chloride. These labeled instructions define the standardized, procedural approach to using the medicine.

Recent Clinical Evidence

Paxirasol: Recent Clinical Evidence

Evidence for Use in Secretolytic Therapy

Research into Paxirasol (Bromhexine Hydrochloride) was studied for its use in respiratory conditions involving thick, difficult-to-clear mucus. Studies, including randomized controlled trials (RCTs) and clinical reappraisals, explored its application in adult patients with chronic bronchitis and bronchiectasis. Researchers examined patient-reported outcomes describing perceived discomfort (cough, ease of clearing mucus) and monitored objective changes in sputum thickness. Findings describe patterns observed in changes measured during the study period; however, when researchers looked at objective measures of lung function like FEV1, findings were mixed and showed variability. The evidence pool is assigned a moderate level of confidence, but quality varies due to modest sample sizes and inconsistent objective results in some older studies.

Evidence from Investigational Trials in Viral Respiratory Pneumonia

Paxirasol was evaluated in numerous RCTs focusing on investigational use in patients with acute viral respiratory pneumonia. Studies monitored hospitalized adult populations, examining critical outcomes like 28-day mortality, the need for mechanical ventilation, and ICU admission. While research is ongoing, analysis of these trials showed that findings were mixed and often described as controversial. For major endpoints, data show patterns related to statistical non-significance, meaning certainty remains low. The evidence for this investigational use remains limited by modest sample sizes and short follow-up durations.

Research Gaps and Special Populations

Studies have explored the medication in pediatric populations and older adults; however, data for certain groups remain insufficient for definitive conclusions. Furthermore, long-term effects are not fully established, particularly regarding influence on chronic disease progression. A limitation is that evidence quality varies across studies, and comparative evidence is lacking for some key outcomes. Findings describe group patterns, and research does not determine whether an individual will respond similarly.

Frequently Asked Questions (FAQ)

Common questions about Paxirasol (FAQ)

Q: What is the main difference between Paxirasol and other common options for this condition?

Paxirasol is described in official documents as a mucolytic agent. This means its mechanism involves directly disrupting the structure of certain fibers in mucus, which makes phlegm thinner and easier to clear from the respiratory tract. Other treatments for similar conditions may function through different physiological pathways, such as reducing the production of mucus or suppressing the cough reflex.

Q: What should be avoided while taking Paxirasol, besides other medications?

Official documents recommend avoiding the consumption of alcohol, as this substance may potentially increase side effects such as drowsiness. Regulatory warnings note that activities requiring mental alertness, such as driving or operating heavy machinery, should be avoided if dizziness or drowsiness is experienced.

Q: Is Paxirasol considered safe for people over 70?

Official documentation does not specify a separate dose for older adults based purely on age. However, regulatory information advises caution for all patients with severe hepatic or severe renal impairment, regardless of age. This is because these conditions can affect how the body processes and clears the substance.

Q: What are the main things doctors look at to decide if a person is eligible for Paxirasol?

Eligibility is generally based on the drug's indication for respiratory conditions involving thick, difficult-to-clear mucus. Use is restricted by documented contraindications such as known hypersensitivity to the drug or its components. Caution is also advised in official documents for patients with a history of gastric ulceration or bronchial asthma.

Q: What is the reason why Paxirasol is not approved for use in children?

Official regulatory safety information indicates that the medicine is not recommended for use in children under 2 years of age. This restriction is in place due to the documented risk profile in that very young age group.

Q: Is Paxirasol used for anything else besides its main purpose?

The primary purpose of Paxirasol is its action as a secretolytic agent for certain respiratory conditions. Official research has also investigated its use in managing specific aspects of acute viral respiratory pneumonia, although this application remains investigational.

Q: Can Paxirasol be used safely with common cold medicines?

Regulatory documents list a specific restriction against co-administration with cough suppressants (antitussives) to prevent the buildup of secretions. There is no consistent regulatory mention of interactions with other common cold ingredients, such as decongestants or most antihistamines.

Q: What if a user accidentally takes Paxirasol at the wrong time of day?

The medicine is generally recommended to be taken after meals because ingestion with food is documented to increase the substance’s bioavailability. If a user misses a dose, standard dosing instructions from regulatory documents state to skip the missed dose and resume the normal schedule.

Q: Can Paxirasol cause problems with sleep?

While the product is generally not known to cause sleepiness, official warnings note that users are advised to avoid activities like driving if they experience drowsiness or dizziness after taking the medicine.

Q: How quickly does Paxirasol start to have an effect after the first time taking it?

Official pharmacokinetics information indicates that the peak plasma concentration of the active substance occurs approximately one hour after taking the medicine. However, the exact time required for the clinical effect to be noted is not consistently established in all regulatory summaries.

Q: Is it normal to feel tired or dizzy when starting Paxirasol?

Regulatory documents list dizziness and headache as potential adverse effects. Generalized fatigue or tiredness is not consistently listed as a side effect in the core regulatory documentation for this medicine.

Q: What is the purpose of the 'inactive ingredients' listed in Paxirasol?

Inactive ingredients, also known as excipients, are necessary for the drug's formulation and function. They are relevant to safety because official documents state the drug is contraindicated for individuals with known hypersensitivity to the active substance or any of its excipients.

Q: Is Paxirasol available over the counter, or only with a prescription?

In several jurisdictions, Paxirasol is classified as a medicine that is available without a prescription, such as a Pharmacy medicine (S2). This means the medicine is regulated and may be provided under the supervision of a pharmacist, but does not always require a doctor's written order.

Q: How long does the main effect of Paxirasol usually last in the body?

Official pharmacokinetics information describes the terminal elimination half-life of the active substance as being up to approximately 12 hours in some documents. This is the time required for half of the substance to be eliminated from the body.

Q: Can Paxirasol be used by women who are planning to become pregnant?

In some authoritative documents, the substance is classified in Pregnancy Category A, indicating it has been taken by a large number of women without proven harm. General regulatory guidance describes that pregnant women and those planning to conceive should consider the drug only if the potential benefits justify the possible risks.

Q: Is there a generic version of Paxirasol available?

The active substance in Paxirasol, Bromhexine Hydrochloride, is not limited to a single brand name. The existence of multiple different approved products in various markets confirms the availability of products containing this substance under both branded and unbranded titles.

Q: Is Paxirasol known to cause headaches?

Official documentation lists headache as a reported side effect of the medication.

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

Regulatory-style safety information explicitly reports that no habit-forming tendencies have been associated with the use of this medicine.

Q: Can Paxirasol be taken by someone who drives or operates heavy machinery?

Official warnings note that activities such as driving or operating heavy machinery should be avoided if central nervous system side effects such as dizziness or drowsiness are experienced.

Q: Are there any specific warnings about taking Paxirasol with alcohol?

Official documentation contains warnings regarding caution or avoidance of alcohol consumption. This warning is provided because alcohol may potentiate central nervous system side effects like drowsiness and sleepiness.

Q: Is Paxirasol described as being a cure for the condition it treats?

Official documentation describes the drug as a mucolytic agent intended to support the body's mechanisms for clearing mucus. It is used in the treatment of conditions associated with productive cough; it is not described as a cure.

Q: Does Paxirasol affect a person's ability to concentrate?

Official warnings note that activities that require mental alertness, such as concentration, should be avoided if central nervous system side effects such as dizziness or drowsiness are experienced.

Q: How is Paxirasol different from a supplement or herbal remedy?

Paxirasol is classified as an approved drug (mucolytic agent) by governmental agencies. It is subject to stringent official approval processes for quality, safety, and effectiveness, which sets it apart from non-regulated herbal or dietary supplements.

How should Paxirasol be stored and disposed of?

The storage and disposal of Paxirasol (bromhexine hydrochloride) must adhere to official regulatory conditions to maintain stability and ensure safety.

Official Storage Requirements

Condition Requirement
Temperature Store at room temperature, typically below 25 C or 30 C.
Protection The product must be protected from light and moisture. Liquid forms must not be frozen.
Packaging Keep the medicine in the original container or package.
Child Safety Must be stored out of the sight and reach of children.

Official Disposal Instructions

Unused or expired Paxirasol must not be thrown into household waste or flushed down the toilet. Disposal must be performed according to local regulations for pharmaceutical waste, often requiring the medicine to be returned to a pharmacy.

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

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