Noskapin

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Noskapin

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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 Noskapin

What is Noskapin? Identity, Classification, and Purpose

Property Description
Active Ingredient Noscapine (Narcotine)
Form Tablet, Oral solution, Syrup
Pharmacological Class Central-acting Antitussive Agent (Cough Suppressant)
Common Use Symptomatic relief of dry, non-productive cough
Origin Natural Derivative (Opium Alkaloid)

What is Noskapin and its Active Ingredient, Noscapine?

Noskapin is the designation for a medicinal product containing the active substance Noscapine, historically known by the synonym Narcotine. This compound is chemically classified as a phthalideisoquinoline alkaloid, a specific structure derived from a natural source, the opium poppy (Papaver somniferum). Although it originates from opium, Noscapine is pharmacologically distinct from narcotic opium derivatives, a feature that allows it to often be available with Over-The-Counter (OTC) status in various regions. The medicine is typically prepared as a single-ingredient product intended for oral intake.

What Pharmacological Class Does Noskapin Belong To?

Noskapin functions as a central-acting antitussive agent, meaning its primary role is to act as a cough suppressant. This mechanism involves influencing the central nervous system to reduce the sensitivity of the cough reflex. Noscapine is characterized as a non-opioid antitussive. It lacks the sedative, euphoric, and addictive potential typically associated with opioid narcotics, a property that is clinically observed in its application.

What is the General Purpose of This Non-Opioid Antitussive?

By suppressing the central reflex, the fundamental purpose of Noskapin is to deliver targeted symptomatic relief by calming the persistent urge to cough. It is primarily intended for managing a dry or non-productive cough—a cough that does not expel mucus or phlegm—which often causes discomfort and disrupts rest. Its primary therapeutic utility is centered on these antitussive properties.

What side effects are possible with Noskapin?

Possible side effects and safety information

The safety profile of Noskapin (Noscapine) is defined by officially documented adverse reactions and strict regulatory safety classifications, based on government prescribing information like the Summary of Product Characteristics (SmPC).

Adverse effects are grouped by the physiological system affected. Common regulatory categories for reported effects include Nervous System Disorders (e.g., headache, dizziness, drowsiness) and Gastrointestinal Disorders (e.g., nausea, vomiting, upper abdominal pain).

Serious Adverse Reactions

The most serious safety concerns documented in regulatory reports relate to severe, systemic allergic responses. These are classified as Rare or Very Rare events and include Anaphylaxis and Angioedema (swelling of the face, tongue, or throat) which may be associated with difficulty breathing.

Population and Interaction Safety Constraints

Official labels define specific restrictions concerning safety. For the pediatric population, use is often restricted or contraindicated in infants and very young children (under 2.5 years) in many regions due to the documented risk of respiratory events.

Furthermore, regulatory documents state limitations concerning co-administration with other substances. Noskapin is generally contraindicated for use with Monoamine Oxidase Inhibitors (MAOIs) due to serious interaction concerns. Caution is also necessary when administered concurrently with substances that depress the central nervous system, including Alcohol, and with the anticoagulant Warfarin, as the effects of these may be enhanced.

Overdose and Emergency Response

Overdose with Noskapin has been documented to present with a spectrum of clinical manifestations, focusing primarily on the central nervous system (CNS) and gastrointestinal disturbances. Documented symptoms associated with supra-therapeutic exposure include common signs such as Nausea, Vomiting, Headache, and Drowsiness. As toxicity escalates, more serious neurological signs may emerge, including increasing Confusion and Agitation.

The most severe outcomes reported in official summaries are life-threatening, particularly Coma and Seizures. Furthermore, regulatory documentation highlights the risk of Respiratory Failure as a potential complication, noting that this risk may be heightened in elderly patients.

The official response framework mandates that individuals must seek immediate medical attention for any suspected overdose. Urgent medical help is required to manage these potentially serious neurological and respiratory manifestations. Due to the finding that no specific pharmacological antidote is known for Noskapin, the standard procedural intervention dictated by regulatory guidance is to provide symptomatic and supportive treatment. This often necessitates close and continuous hospital monitoring to manage and maintain vital functions effectively.

Therapeutic Uses of Noskapin

Noskapin (Noscapine) is commonly used to help with symptomatic relief, primarily targeting specific types of cough manifestations in acute, non-complicated conditions.

The medication is used for addressing the dry, non-productive cough—a type of cough that does not clear mucus but creates symptoms related to inflammatory or irritative states. It is relevant in conditions characterized by periods of heightened symptoms, such as the common cold and upper respiratory tract infections. Noskapin helps address symptom clusters that may become intense or disruptive, including the bothersome paroxysmal coughing spells and the persistent urge to cough.

“It may assist with managing the frequency and intensity of these taxing episodes, contributing to easing the overall symptom load.”

The medication is generally applied in scenarios where symptoms that interfere with daily functioning create noticeable physiological strain. This supports general well-being during symptomatic phases and may assist with managing symptoms during nocturnal periods, when the cough may interfere with functional stability. Noskapin provides support that helps ease the overall symptom burden and may help patients cope more steadily with symptom fluctuations associated with acute episodes.


Quick Fact: Relief for Dry, Irritative Cough

Eligibility and Restrictions for Use

Official Eligibility and Contraindications for Noskapin

Noskapin (Noscapine) eligibility is determined by specific regulatory requirements that define which populations may use the medicine and which are explicitly excluded. The medicine is generally permitted for use in adults and children above specific age thresholds, but several absolute exclusions apply.

Populations Contraindicated (Must Not Use)

Category Contraindication Criteria
Age Children under 30 months (2.5 years) are strictly contraindicated by many official labels.
Hypersensitivity Patients with known allergy to Noscapine or any ingredient in the product.
Respiratory Status Patients with pre-existing respiratory failure or severe respiratory depression.
Comorbidity Individuals whose cough is due to severe bronchial asthma or Severe Chronic Obstructive Pulmonary Disease (COPD).

Special Population Restrictions

Use requires special caution in older adults, as this population is identified in regulatory documents as having an increased risk of potential respiratory complications. Regarding maternal use, the medicine is generally not recommended or contraindicated during pregnancy, and its use during lactation (breastfeeding) is often cited as not established.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

Noskapin has documented interactions with specific medicinal product categories, often requiring avoidance or close monitoring due to the potential for altered plasma concentrations or enhanced pharmacologic effects of the co-administered drugs.

Documented Interaction Categories and Implications

The primary concern relates to Noskapin's documented inhibition of certain drug-metabolizing enzymes (CYP2C9 and CYP3A4), which increases the exposure of co-administered drugs that rely on these pathways for clearance.

Interacting Product Category Practical Constraint or Requirement
Oral Anticoagulants (e.g., Warfarin) Use requires close monitoring due to increased anticoagulant effect and risk of bleeding.
Statins (HMG-CoA Reductase Inhibitors) Caution is advised, as the drug's plasma concentration may be increased, requiring monitoring.
Centrally Sedating Substances (e.g., Alcohol) Caution is advised due to enhanced sedative effects.
Monoamine Oxidase Inhibitors (MAOIs) Contraindicated and must not be taken concurrently due to the risk of potentially fatal effects.
Expectorants and Mucolytics Should not be used concurrently due to potential interference with the desired therapeutic effects.
Morphine Agonists/Antagonists Avoid combined use as Noskapin may reduce their effectiveness via receptor competition.

Summary of Interaction Constraints

The official interaction profile strictly prohibits concurrent use with MAOIs due to safety risks and advises avoidance of combination with morphine agonists and antagonists due to reduced therapeutic efficacy. For anticoagulants, statins, and centrally sedating substances, the constraint mandates caution and clinical monitoring to manage the elevated systemic exposure of the interacting medicine resulting from enzyme inhibition.

Mechanism of Action

How Noskapin Works

Central Cough Reflex Regulation

Noskapin acts within domains involving neurotransmitter signaling and medullary regulation. This mechanism involves modulating key pathways associated with the brain's cough center in the medulla oblongata, thus influencing the activity within this pathway. The resulting physiological consequence is an alteration of the efferent signaling pattern from the cough center.


Modulation of Airway Sensory Signal Transduction

This compound engages mechanisms that regulate overactive or dysregulated processes in the peripheral nervous system. Noskapin modifies early molecular steps that shape systemic physiological outcomes by mediating the regulation of processes driven by distinct signaling patterns at airway sensory nerve endings. This attenuates the influence of excessive mediator activity, modulating the magnitude of peripheral receptor activation in the respiratory tract.

Dosage and Administration Information

Administration Guidelines for Noskapin

Noskapin (Noscapine) usage instructions detail the administration procedure, dosage, and frequency. This information describes the protocol for use.


1. Administration Route and Form

  • Route: Noskapin is administered by the oral route.
  • Forms: Common forms include tablets and sometimes syrups.

2. Standard Dosage and Schedule

Dosage is determined by age group, and the medicine is to be taken on an as-needed basis every 4 to 6 hours.

Age Group Single Dose Range Maximum Daily Limit (24 hours)
Adults 15 mg to 30 mg 180 mg
Children (6 to under 12 years) 7.5 mg to 15 mg 90 mg
Children (2 to under 6 years) 3.75 mg to 7.5 mg 45 mg

3. Procedural Rules and Constraints

  • Timing: Administration may be suggested approximately one hour before meals.
  • Dose Increase: If the usual dose is ineffective, the instruction is to not increase the dose.
  • Pediatric Use: Use in children under two years of age is generally restricted unless advised and supervised by a healthcare professional.
  • Duration: If the underlying condition persists for more than two weeks while taking Noskapin, a medical evaluation is required.

These administration rules define the dose strength, frequency, and total daily maximums that are followed for the use of the drug.

Recent Clinical Evidence

Evidence for Use in Acute Dry and Non-Productive Cough

Research has explored the use of Noskapin in conditions characterized by episodic or acute changes in symptoms, such as the dry cough associated with conditions such as the common cold or upper respiratory tract infection. This work primarily used short-term Randomized Controlled Trials (RCTs) and comparative clinical studies conducted during periods of increased symptom activity. Studies monitored patient-reported outcomes, including Cough Symptom Scores (CSS) and the Visual Analogue Scale (VAS), over defined short time intervals, typically ranging from 5 to 14 days.

The findings from these clinical investigations report how symptoms were measured in the observed populations. Evidence quality varies across studies, and findings from trials using Noskapin in combination with other active ingredients were also documented, which suggests the specific contribution of the single substance remains uncertain.


Research on Specific Cough Situations and Long-Term Data

Noskapin was also evaluated in research contexts focusing on more specific or refractory dry cough presentations. This includes clinical investigations applied in studies examining patient-reported experiences of cough symptoms that were induced by certain types of medication. This area of research is generally based on older or smaller-scale clinical investigations, with research focusing on short-term changes.

The evidence base includes research relevant in trials assessing short-term or episodic symptom patterns. The research provides limited information for long-term outcomes, and follow-up durations were limited to acute episodes. Long-term effects are not fully established.


Evidence in Children and Key Research Uncertainties

Research has been conducted in specific age groups, as Noskapin was studied for use in children to evaluate outcomes related to physical discomfort. However, data for certain groups remain insufficient, particularly in providing comprehensive, age-specific data. For other populations, such as older adults, subgroup findings are uncertain.

Key limitations in the research include that sample sizes were modest in some of the specific cough studies, and comparative evidence is lacking for many common alternatives. The evidence base contributes to the broader landscape but also highlights areas where certainty remains low.

Frequently Asked Questions (FAQ)

Common questions about Noskapin (FAQ)

Q: What should I do if I miss a dose?

A: Official product information suggests that if a scheduled dose of Noskapin is missed, it should generally be taken as soon as remembered. However, if it is almost time for the next dose, the instruction is to skip the missed dose entirely. Regulatory guidance stresses the importance of not taking a double dose to compensate for a missed dose.

Q: Is Noskapin addictive or a narcotic?

A: According to official classifications, Noskapin is not a narcotic. It is categorized as a non-opioid antitussive agent, meaning its action is pharmacologically distinct from true narcotic medicines. Regulatory documents state that it lacks the addictive potential and euphoric effects typically associated with opioid narcotics.

Q: Should I take Noskapin with food or on an empty stomach?

A: Labeling for some Noskapin formulations indicates that the medicine may be taken independently of meals, meaning it can be taken with food or on an empty stomach. Official administration guidelines sometimes reference taking the medicine approximately one hour before meals.

Q: Are there any long-term effects of taking Noskapin?

A: Noskapin is indicated for the short-term, symptomatic relief of acute cough, and prolonged use requires medical consultation. Official research has primarily focused on short-term efficacy, and the long-term effects of the medicine are not fully established in the current body of evidence. The medicine is generally used for the short-term duration of acute cough symptoms.

Q: What is the recommended dose for a 4-year-old child?

A: Official administration guidelines define an established dosage range for children aged 2 to under 6 years. This single dose is based on regulatory standards and is intended to be taken on an as-needed basis to manage cough symptoms.

Q: What happens if I take too much Noskapin (overdose)?

A: Overdose symptoms may include severe drowsiness, vomiting, dizziness, and loss of coordination. Official product information states that medical attention is required immediately if an overdose is suspected.

Q: What is the active ingredient's half-life or time to onset of action?

A: Studies on the pharmacokinetic properties of Noskapin, which describe how the body processes the drug, show that the medicine is rapidly absorbed after being taken orally. The official elimination half-life, which is the time it takes for half of the drug to be cleared from the system, is typically reported to be around 2.5 to 4.5 hours.

Q: Can Noskapin be used for a productive cough with phlegm?

A: Official therapeutic indications strictly state that Noskapin is only for the symptomatic relief of a dry, non-productive cough. Therefore, the medicine is not indicated for a productive cough, which is one that produces phlegm or mucus.

Q: Does Noskapin come in a liquid form for children?

A: Yes, regulatory documents and product labeling confirm that Noskapin is available in various pharmaceutical forms suitable for oral intake. These include oral solutions and syrups, which are commonly used to facilitate accurate dosing for children.

Q: What should I do with my leftover or expired Noskapin?

A: Official guidance requires that unused or expired Noskapin not be disposed of in household trash or down a toilet. Disposal must follow local regulations for pharmaceutical waste, which often involves returning it to a designated collection point or take-back program.

How should Noskapin be stored and disposed of?

Noskapin (Noscapine) must be stored and disposed of according to official regulatory documentation to ensure stability and public safety.

Storage Requirements

Noskapin must be stored in a dry place and protected from light. The medicine requires controlled storage, typically at a temperature below 30°C or as specified on the label. To maintain stability, the product must be kept in its original container and the lid or bottle must be kept tightly closed.

Child Safety: It is a mandatory requirement to store the medicine out of the sight and reach of children.


Disposal Instructions

Expired or unused Noskapin must not be disposed of in household trash or poured down a drain or toilet. Disposal must follow official instructions for pharmaceutical waste, meaning it should be taken to a designated collection point or handled in accordance with local regulations.

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

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