Mucosil ACC

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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 Mucosil ACC

Property Description
Active ingredient Acetylcysteine (N-acetylcysteine, NAC)
Form Sterile solution for inhalation, Effervescent tablet
Pharmacological class Mucolytic agent, Antioxidant (Glutathione Inducer)
Common use Managing viscid mucous secretions, Antidote
Origin Synthetic derivative (of Cysteine)

What is Mucosil ACC and Its Pharmacological Class?

Mucosil ACC is a prominent trade name for a medicine centered on the single active ingredient, Acetylcysteine, which is chemically referred to as N-acetylcysteine (NAC). This compound is recognized within its primary pharmacological class as a mucolytic agent. The drug is recognized for its importance in respiratory care. As a mucolytic, the drug's classification is clinically recognized for signifying that its action is the direct chemical modification of mucus structure, a differentiating factor from less specific expectorant drugs.

Composition, Origin, and General Purpose

Acetylcysteine is a synthetic derivative of the amino acid L-cysteine, ensuring a consistent and standardized single-ingredient product. Mucosil ACC is available in specialized dosage forms, including a sterile solution intended for delivery via oral inhalation using a nebulizer. This targeted delivery is crucial for treating conditions where viscid mucous secretions obstruct the airways.

The general purpose of the medication is to promote the efficient clearance of the airways. Its primary physiological action involves the Acetylcysteine molecule acting as a reducing agent to break down the complex bonds in mucoproteins, effectively decreasing mucus viscosity. Furthermore, the compound maintains a vital secondary therapeutic purpose: it acts as a cysteine prodrug to support the body's Glutathione reserves, a mechanism that facilitates its role in specific detoxification processes, confirming its essential function as an antidote.

Regulatory References

  1. WHO Essential Medicines List

What side effects are possible with Mucosil ACC?

Possible Side Effects and Safety Information

Adverse reactions associated with Acetylcysteine (Mucosil ACC) are officially categorized by the affected body system and reported frequency, based on regulatory documentation from authorities such as the EMA and FDA. The safety profile identifies effects classified as Uncommon, Rare, and Very Rare.

Frequency-Classified Adverse Reactions

Frequency Examples of Adverse Reactions (by System)
Uncommon Hypersensitivity, headache, tinnitus, tachycardia, nausea, vomiting, abdominal pain, rash, fever.
Rare Bronchospasm, dyspnoea (difficulty breathing), sleepiness, dyspepsia.
Very Rare Anaphylactic shock, anaphylactoid reaction, hypotension, haemorrhage.

Serious Adverse Reactions

The label documents serious adverse reactions, which are classified as Very Rare. These include the potential for Anaphylactic shock and severe systemic hypersensitivity reactions. Furthermore, serious skin reactions, such as Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), have been reported in temporal association with the compound. The risk of Bronchospasm is also noted, particularly in susceptible patients, and may require treatment discontinuation.

Population-Specific Safety Considerations

Official safety information provides specific caution for certain groups. Individuals with bronchial asthma require close observation due to the risk of bronchospasm. Patients with a history of peptic ulcers or esophageal varices are noted to have a potential risk of upper gastrointestinal hemorrhage, particularly exacerbated by severe vomiting. Caution is also specified for patients with a diagnosed histamine intolerance during prolonged treatment.

General Safety Notes

The medicine's action may cause an increased volume of liquefied bronchial secretions at the beginning of treatment. Furthermore, the label advises avoiding the concomitant use with antitussive (cough suppressing) drugs due to the potential for a buildup of secretions.

Overdose and Emergency Response

The official regulatory profile for Acetylcysteine overdose addresses manifestations resulting from acute systemic over-administration or severe hypersensitivity reactions. Documented clinical presentations may include signs of anaphylactoid reactions such as facial flushing, rash, hypotension, and bronchospasm. Other manifestations associated with excessive infusion may involve CNS effects like confusion and severe headache, often accompanied by intractable vomiting and restlessness.

Urgent medical attention must be sought immediately if a severe reaction or life-threatening outcome is suspected. These severe outcomes, which require immediate medical support, include fatal or life-threatening anaphylaxis, seizures, and cerebral edema. The regulatory information mandates that the infusion must be immediately discontinued upon severe manifestation.

Management for an overdose of the drug itself is officially described as symptomatic and supportive treatment, as no specific antidote exists. The official labeling emphasizes mandatory monitoring of hepatic and renal function and fluid balance. A key consideration is that lower-weight patients, particularly those weighing less than 40 kg, are identified as having an increased risk of fluid overload and associated hyponatraemia leading to CNS complications.

Therapeutic Uses of Mucosil ACC

What Mucosil ACC Treats: Main Uses and Benefits

The therapeutic application of Mucosil ACC, a formulation of Acetylcysteine, spans two distinct clinical domains, focusing on managing symptoms related to physical discomfort and providing supportive protection to organs. The compound is generally used for both its mucolytic and antidote functions.

Core Therapeutic Contexts

This medication is commonly used across conditions characterized by periods of heightened symptoms such as Cystic Fibrosis (CF), Chronic Bronchitis, Bronchiectasis, and COPD, where the primary issue involves the persistent retention of abnormally thick, sticky mucous secretions. The therapeutic benefit supports expectoration, which may assist with maintaining functional stability during symptomatic periods.

The compound is also considered relevant in emergency support, applied as an important antidote for the management of acute Acetaminophen (Paracetamol) overdose.

“The compound is used in situations involving certain distressing symptoms to provide supportive relief when symptoms create noticeable physiological strain and interfere with daily functioning.”

In acute episodes, such as those related to infections or post-operative care, the medication provides supportive benefit by assisting with the breakup and removal of these obstructive secretions. This may help patients cope more steadily with symptom fluctuations related to respiratory distress.


Quick Fact: Relief for Thick Mucus The compound is considered relevant for easing symptoms related to physical discomfort and is applied to address the obstruction caused by viscid secretions in the lungs.


Emergency Support in Toxicological Crises

In this distinct application, the benefit may include supportive protection for organs, specifically helping to address the potential for organ-specific functional stress in the liver and kidneys caused by toxic levels of the drug.

Regulatory References

  1. NIH StatPearls overview

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Mucosil ACC

The eligibility for Acetylcysteine (Mucosil ACC) is determined by regulatory agencies based on contraindications, age restrictions, and specific medical conditions. The medicine is contraindicated for individuals with known hypersensitivity to the active substance or its excipients. Additionally, it must not be used for mucolytic purposes in children younger than 2 years of age due to the risk of airway obstruction.

Population Status Regulatory Rule (Mucolytic Use)
Absolute Prohibition Children under 2 years; Hypersensitivity to Acetylcysteine.
Age-Group Eligibility Approved for adults and adolescents; specific pediatric formulations available for children 2 years and older.
Conditional Use Patients with bronchial asthma require close monitoring; use must be discontinued if bronchospasm occurs.
Reproductive Status Use during pregnancy is generally preferable to avoid due to limited human data; insufficient information exists on use during breastfeeding.

Eligibility may also be restricted by excipients; for example, specific formulations are contraindicated in patients with Phenylketonuria or hereditary fructose intolerance. For its antidote use in overdose, the intravenous formulation is eligible for patients weighing 5 kg or greater.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official government regulatory documents define several important interaction patterns involving Acetylcysteine, primarily classified as pharmacodynamic potentiation and chemical incompatibility requirements.

Category Interacting Medicinal Products / Substances
Pharmacodynamic Potentiation Nitroglycerin and other organic nitrates
Prohibited Co-administration Antitussive drugs (cough suppressants)
Chemical Incompatibility Oral antibiotics (e.g., Tetracyclines, Cephalosporins)
Reduced Absorption Risk Activated Charcoal
Plasma Level Alteration Carbamazepine

Official Interaction Statements and Requirements

  • Nitroglycerin: Co-administration may formally enhance the vasodilatory effects of Nitroglycerin, which can result in documented significant hypotension.
  • Antitussive Drugs: The use of Acetylcysteine and antitussive agents is officially restricted because the reduction in the cough reflex may lead to a build-up of bronchial secretions.
  • Oral Antibiotics: To prevent chemical inactivation, regulatory guidance advises separating the administration of oral antibiotics by at least two hours before or after Acetylcysteine.
  • Activated Charcoal: This substance may reduce the effect of Acetylcysteine due to reduced absorption, which is a primary concern in the antidote setting.
  • Carbamazepine: Co-use may result in a formal risk of sub-therapeutic levels of Carbamazepine.
  • Inhalational Mixing: The stability and safety of co-mixing Acetylcysteine solution with other nebulized medicinal products has not been established; simultaneous mixing is not recommended.

These constraints strictly define how Acetylcysteine may be co-administered with other medicinal products, focusing on timing separation for incompatible substances and prohibitions for pharmacodynamic conflicts.

Mechanism of Action

The molecular mechanism of N-acetylcysteine (NAC), the active substance in Mucosil ACC, involves both direct modification of secreted glycoproteins and modulation of intracellular redox status. NAC acts as a reductant, directly targeting disulfide bridges within the high-molecular-weight glycoproteins of mucus in the respiratory tract. Through a thiol-disulfide interchange reaction, NAC cleaves these bonds, resulting in the depolymerization of mucin molecules. This cleavage structurally modifies the mucus, leading to a reduction in its viscosity and elasticity.

Intracellularly, NAC is a precursor to the semi-essential amino acid L-cysteine, which is the rate-limiting substrate for the synthesis of the tripeptide glutathione (GSH). NAC is deacetylated to cysteine, thereby promoting the intracellular synthesis and replenishment of the GSH pool. As GSH is a central regulator of the cellular redox state, this replenishment mechanism contributes to the mitigation of oxidative stress by enhancing the cell's capacity to neutralize reactive oxygen species (ROS) via glutathione-dependent pathways, such as those catalyzed by glutathione peroxidase. Furthermore, NAC can modulate inflammatory signaling pathways, including nuclear factor-kappa B (NF-kappaB), leading to a downstream effect on the transcription and release of proinflammatory cytokines.

Dosage and Administration Information

The use of Acetylcysteine (Mucosil ACC) is defined by distinct administration routes and dosing protocols for its different applications.

Official Routes and Dose Principles

Administration is approved for Inhalation (via nebulizer), Direct Instillation (tracheostomy or catheter), Oral intake (effervescent or diluted solution), and Intravenous (IV) Infusion. The total dosage and timing are highly dependent on the route chosen.

Application Context Administration Route Standard Regimen Key Dosing Total Duration Pattern
Mucolytic Inhalation (Nebulized) 3 to 5 mL of 20% solution (or 6 to 10 mL of 10%) Intermittent, 3 to 4 times a day (or every 2 to 6 hours)
Antidote Intravenous (IV) Infusion Total 300 mg/kg given as three sequential doses: 150 mg/kg, 50 mg/kg, and 100 mg/kg Fixed, 21-hour course (may be extended)
Antidote Oral Solution Loading dose of 140 mg/kg, followed by maintenance doses of 70 mg/kg Fixed, 17 maintenance doses every 4 hours (72-hour course)

Administration Requirements

Administration mandates specific preparation steps. For mucolytic use, the 20% solution may be diluted with Sodium Chloride Injection or Sterile Water, while the 10% solution may be used undiluted. For IV use, the concentrated solution must be diluted in an approved solution like 5% Dextrose in Water prior to infusion. Weight-based restrictions exist for the IV antidote protocol, including a ceiling weight of 110 kg for dose calculation in obese patients. An oral antidote dose that is vomited within 1 hour of intake must be repeated.

Recent Clinical Evidence

Research evidence / Overview of studies for Mucosil ACC

The scientific record for Acetylcysteine (Mucosil ACC) covers two distinct clinical areas: research contexts related to thick mucous secretions and its role in acute support. The research base includes randomized controlled trials (RCTs), systematic reviews, and large cohort studies. These studies help show what has been observed so far, providing context about group patterns but not individual predictions.


Evidence for Managing Viscid Mucous Secretions

Research has explored the use of Acetylcysteine in conditions characterized by fluctuating or episodic manifestations, particularly in adults with Chronic Obstructive Pulmonary Disease (COPD) and Chronic Bronchitis. The studies were designed to evaluate changes in patient-reported outcomes describing perceived discomfort and the frequency of episodes where symptoms become more noticeable.

Researchers examined several outcomes related to daily functioning, including tracking the frequency of exacerbations (periods of acute symptom worsening) and measures of Quality of Life (QoL). Findings observed in some studies describe patterns related to changes measured in the frequency of exacerbations compared to a control group, particularly in trials that used longer follow-up durations. Research included studies where findings were mixed, and some larger clinical trials observed limited changes in patient outcomes, indicating that the response may vary between study populations.


Evidence for Emergency Antidote Use in Acetaminophen Overdose

The research surrounding Acetylcysteine’s application as an antidote was studied for its use in patients presenting with acute Acetaminophen (Paracetamol) overdose. This research involved large-scale multicenter studies that monitored outcomes reflecting physiological strain or stress on organs. Studies examined crucial outcomes such as survival rates and the prevention of Hepatotoxicity (severe liver injury). The research describes patterns related to a relationship between early administration of the antidote and changes measured in outcomes related to liver function markers. This compound is included in research conducted in this distinct, acute crisis setting.


Where Research Remains Uncertain

For chronic respiratory use, long-term effects are not fully established. While the evidence provides insight into effects measured over a year, there is limited information for long-term outcomes that fully characterize outcomes over a patient's lifetime. Additionally, evidence quality varies across studies due to factors like modest sample sizes and differing dose levels across the research. Data for certain patient groups remain insufficient; the evidence base has a primary focus on COPD. Research is ongoing to better understand these patterns, and study results reflect the specific conditions under which they were conducted.

Key Studies & References

  1. Acetylcysteine: NIH StatPearls Overview on Uses and Safety

Frequently Asked Questions (FAQ)

Common questions about Mucosil ACC (FAQ)

Q: What is the standard regulatory information regarding the safety profile of Mucosil ACC?

A: The comprehensive safety profile for Mucosil ACC is detailed in authoritative government documents. These include the Summary of Product Characteristics (SmPC) published by European agencies or the Prescribing Information (Label) approved by the U.S. FDA. These resources provide a structured overview of known risks and side effects.


Q: What official documents cover the safety and use information of Mucosil ACC?

A: The primary official documents that contain the complete safety and use information are those published by national drug agencies. These include the Summary of Product Characteristics (SmPC) from European authorities or the Prescribing Information (Label) issued by the U.S. FDA. These serve as the official sources for patient medication guides.


Q: What is the difference between a 'serious' and a 'common' side effect for Mucosil ACC, as defined by regulators?

A: Official regulatory information classifies side effects based on their frequency and severity. A serious adverse event is generally defined as one that is life-threatening, causes long-term disability, or requires inpatient hospitalization. Common side effects are those that occur frequently, which are often grouped into categories like 'Uncommon' in regulatory documents.


Q: Is Mucosil ACC the same active ingredient as in the drug [similar-sounding product name]?

A: The active ingredient in Mucosil ACC is Acetylcysteine (N-acetylcysteine). To determine if another medicine has the same active substance, the official prescribing information for that product is generally referenced. Regulatory documents establish the official generic name, which is the most reliable way to confirm if two medicines share the primary ingredient.


Q: Does Mucosil ACC contain common allergens like lactose or gluten?

A: The composition of Mucosil ACC can vary depending on its specific dosage form, such as a solution or an effervescent tablet. Official product labels, found in regulatory documents, list all inactive ingredients (excipients). To determine the presence of substances like lactose or gluten in a particular formulation, the full excipient list is consulted.


Q: Do official sources describe any specific dietary considerations while using Mucosil ACC?

A: Official product information specifies contraindications related to excipients (inactive ingredients) found in certain formulations. For example, some products are contraindicated for patients with conditions such as Phenylketonuria or hereditary fructose intolerance. This is not a general dietary restriction, but an exception based on the formulation's content.


Q: Is Mucosil ACC available over the counter, or does it require a prescription?

A: The regulatory status of Acetylcysteine can vary by jurisdiction and formulation. It is approved as a prescription medicine for specific uses, such as intravenous or inhalation treatments. In some regions, however, the same active ingredient is also sold as an over-the-counter (OTC) nutritional supplement.


Q: What does official guidance say about consuming alcohol while using Mucosil ACC?

A: Alcohol is not typically listed as a formal contraindication in the official regulatory labels for Mucosil ACC. However, regulatory guidance for many medicines includes a general recommendation to seek advice on consuming alcohol from a healthcare professional. This is because alcohol has the potential to cause or worsen various drug interactions.


Q: What is known about Mucosil ACC's potential for interaction with supplements or herbal products?

A: Official prescribing information includes a general recommendation to inform a healthcare professional about all concomitant medicinal products being taken. This includes non-prescription items such as supplements and herbal products. This step addresses the possibility of unknown or unlisted interactions.


Q: Are there any known interactions between Mucosil ACC and blood-thinning medications?

A: Official regulatory information indicates that Acetylcysteine may affect the body's natural blood clotting processes. Taking it alongside medicines that also slow blood clotting, often called blood thinners, may increase the risk of bruising or bleeding. For this reason, official guidance suggests that the co-use of these products be medically supervised.


Q: Is there specific information about Mucosil ACC interacting with common diabetes or blood sugar medications?

A: Official information identifies a potential interaction with certain diabetes treatments, specifically inhaled insulin. Co-use may affect how the insulin is absorbed. For this reason, regulatory guidance indicates that consistent timing of dosing and close blood glucose monitoring is generally advised during co-administration.


Q: Does Mucosil ACC interact with common asthma inhalers?

A: Regulatory warnings caution against mixing the nebulized solution of Mucosil ACC with other nebulized medicinal products. Furthermore, official product information indicates that close monitoring is advised for patients with bronchial asthma due to the potential risk of bronchospasm (difficulty breathing).


Q: What happens if a person forgets to take a dose of Mucosil ACC?

A: Regulatory guidance describes the protocol for a missed dose. If a dose is forgotten, it is generally recommended to take it as soon as it is remembered. However, if the time is close to the next scheduled dose, the regulatory protocol suggests skipping the missed dose. The guidance clarifies that extra medicine should not be taken to compensate for a missed dose.


Q: Does Mucosil ACC have an impact on a person's ability to drive or operate machinery?

A: Official product labels include warnings related to side effects that may impair motor skills. Since some side effects, such as sleepiness or drowsiness, are possible, regulatory guidance suggests that patients determine how the medicine affects them before driving or operating machinery.


Q: What is the process for reporting a suspected side effect of Mucosil ACC to regulatory bodies?

A: The regulatory process for reporting a suspected side effect is managed through national pharmacovigilance systems. The common practice is to contact a healthcare professional or to report the event directly to the national regulatory body (such as the FDA, EMA, or Health Canada) through their established pharmacovigilance system.

How should Mucosil ACC be stored and disposed of?

How to Store and Dispose of Mucosil ACC

Official regulatory guidance defines specific storage requirements based on the product form to ensure stability and integrity.

️ Storage Conditions

Product Form Temperature & Stability Requirement
Unopened Solution Vials Store at controlled room temperature (20 C to 25 C).
Opened Solution Vials The remaining undiluted solution must be refrigerated (2 C to 8 C) and used within 96 hours (4 days).
Effervescent Tablets Store in the original, tightly closed package to protect against moisture; use within 10 to 20 days after the tube is first opened.

️ Disposal and Handling

All medicines must be kept out of the sight and reach of children. Unused or expired Mucosil ACC must not be thrown away via household waste or wastewater; consult a pharmacist for instructions on proper disposal.

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

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