Notus

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Notus

Treatment option: Cough

Medically reviewed

Marina Burgos

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 Notus

What is Notus? Definition and Pharmacological Class

The medicinal preparation Notus is defined by its active ingredient, Dextromethorphan Hydrobromide, which is classified as an antitussive agent (Cough Suppressant), and is intended for the relief of non-productive (dry) cough. Dextromethorphan is a synthetic analog and is typically available in various oral forms including syrup, solution, tablet, or capsule. This substance is clinically recognized and classified as an antitussive agent, which is designated to suppress the urge to cough.

As a synthetic non-opioid, Dextromethorphan operates via a central action, targeting the cough center in the medulla to elevate the cough threshold. This mechanism defines its general purpose: to mitigate the physical reflex of persistent, non-productive coughing typically associated with minor upper respiratory tract issues. Dextromethorphan has a recognized pharmacological class, demonstrating its established role in providing relief from coughing symptoms.


Origin, Composition, and Available Forms

Dextromethorphan Hydrobromide is a synthetic analog, produced through chemical synthesis, which differentiates it from compounds derived directly from natural sources. The final preparation of Notus is intended exclusively for oral administration and consists of the active ingredient combined with a suitable vehicle or base. Notus is supplied as both a single-ingredient antitussive and as a combination product, where Dextromethorphan Hydrobromide is integrated with other agents to address multiple symptoms simultaneously. The use of Dextromethorphan in oral preparations for managing cough indicates its established identity and role in the pharmaceutical landscape.

Regulatory References

  1. NIH MedlinePlus Drug Information: Dextromethorphan

What side effects are possible with Notus?

Possible Side Effects and Safety Information

The safety profile of Notus, which contains Dextromethorphan Hydrobromide, is formally classified by regulatory authorities based on system-organ classes and frequency of occurrence. The majority of reported adverse reactions are generally classified as Common or Uncommon.

Adverse effects most frequently affect the Nervous System and Gastrointestinal System. Effects classified as Common may include dizziness, lightheadedness, nausea, and vomiting. Less frequently, in the Uncommon category, patients may experience drowsiness, general fatigue, or feelings of nervousness and restlessness.


Serious Adverse Reactions and Restrictions

Official safety documents explicitly list rare, but serious, reactions and specific safety constraints:

  • Serotonin Syndrome: A rare but severe reaction explicitly documented as a risk when the medication is used concurrently with Monoamine Oxidase Inhibitors (MAOIs) or other serotonergic agents. This concurrent use is strictly contraindicated.
  • Cutaneous Reactions: Rare but potentially severe skin disorders, such as Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis, have been noted in post-marketing surveillance reports.
  • Dose-Related Effects: Regulatory information indicates that certain effects, including sedation and psychiatric disturbances (such as confusion or excitement), are dose-dependent, with risks increasing at higher levels of exposure.

Specific safety considerations apply to certain populations. Individuals with severe hepatic impairment require particular caution due to the drug's metabolism. Furthermore, specific age constraints are present in labeling, and the medication may be contraindicated for coughs associated with chronic respiratory conditions like asthma or emphysema.

Overdose and Emergency Response

Overdose and When to Seek Help

The regulatory guidance for Dextromethorphan Hydrobromide overdose focuses on the documented clinical manifestations and mandatory immediate emergency actions.

Overdose Manifestations and Severe Outcomes

Overdose may present with a spectrum of effects, from CNS excitation—such as agitation, hallucinations, confusion, and dizziness—to severe CNS depression, including somnolence, ataxia (unsteady walking), seizures, and coma. Physiologically, documented signs include involuntary eye movements (nystagmus), muscle twitching, tachycardia (fast heart rate), and gastrointestinal issues like nausea and vomiting.

Regulators classify overdose as potentially leading to life-threatening outcomes, particularly profound respiratory depression and the development of Serotonin Syndrome. The risk of toxic effects is noted to be increased in individuals who are poor metabolizers of the CYP2D6 enzyme.

When Immediate Medical Help is Required

Suspected overdose is uniformly defined as a medical emergency requiring immediate professional intervention. Individuals must seek medical help or contact a Poison Control Center right away. If the affected person shows signs of a severe reaction—including collapse, seizures, difficulty breathing, or being unable to be awakened—immediate contact with emergency services is mandated.

Management in a healthcare setting is symptomatic and supportive. This may involve procedures like gastric decontamination or administration of naloxone for CNS and respiratory depression, alongside continuous monitoring of vital signs and cardiac activity.

Therapeutic Uses of Notus

What Notus Treats: Main Uses and Benefits

The active ingredient in Notus, Dextromethorphan Hydrobromide, is commonly used to provide symptomatic relief from cough associated with acute irritative states. Dextromethorphan is used to temporarily relieve cough caused by the common cold, the flu, or other conditions. Its therapeutic role is relevant for managing the non-productive, disruptive manifestations of coughing. This domain covers the primary indication for Notus: managing the persistent dry cough, which often presents as irritating or ticklish.

Symptomatic Support

Notus is commonly used across conditions characterized by periods of heightened symptoms, relevant when supportive symptom management is appropriate, such as during episodes of seasonal viral illnesses like the common cold and influenza. The medication assists with managing symptoms related to irritative states. It is typically applied when symptoms create noticeable interference with daily stability, especially when symptoms create noticeable interference with daily functioning. It is commonly used across conditions presenting with acute episodes such as those involving cough due to the common cold or influenza.

“The use of Notus supports the patient during difficult episodes by easing distress and can contribute to improved comfort during periods of heightened symptoms.”

This use may assist with managing symptoms that interfere with daily functioning and supports the patient during difficult episodes by easing distress.


Quick Fact: Relief for Persistent Dry Cough The medication is relevant for easing symptoms associated with acute respiratory episodes, particularly when symptoms interfere with daily functioning.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Notus?

The population-eligibility rules for the antitussive medication Notus (Dextromethorphan Hydrobromide) are defined strictly by official government regulatory sources, determining who is approved for use and who is formally excluded.

Populations Not Eligible for Use (Contraindications)

Notus is absolutely contraindicated for specific populations due to severe safety risks outlined in official labeling:

  • Patients currently taking Monoamine Oxidase Inhibitors (MAOIs), or those who have stopped MAOI use within the previous 14 days.
  • Patients with a known hypersensitivity or allergy to Dextromethorphan Hydrobromide or any other component of the preparation.

Age-Related Eligibility

Age Group Eligibility Status (Regulatory Basis)
Adults and Adolescents (typically ge 12 years) Approved for temporary relief of non-productive cough.
Children under 4 years of age Not Recommended for over-the-counter use for cough and cold symptoms.
Older Adults (Geriatric) Conditional; use is permitted but caution is advised due to potential decreased liver or kidney function.

Conditional Use and Restrictions

Official labeling requires caution or medical consultation for the following groups:

  • Chronic Respiratory Disease: Patients with conditions such as asthma, COPD, or chronic bronchitis should use Notus with caution.
  • Organ Impairment: Patients with severe hepatic (liver) or renal (kidney) impairment require consultation prior to use.
  • Pregnancy and Lactation: Use is conditional and generally advised only after a healthcare professional has assessed the potential benefit versus risk.

What should I know about interactions with other medicines?

Notus Interactions with other medicines and products

Official regulatory documentation structures the interaction profile of Notus (Dextromethorphan Hydrobromide) around specific metabolic and pharmacodynamic constraints with other medicinal products.


Interaction Classifications and Restrictions

The primary restriction is a contraindication for co-administration with Monoamine Oxidase Inhibitors (MAOIs), including a mandatory 14-day washout period after discontinuing the MAOI before Notus may be administered. This is a crucial, time-dependent prohibition based on official labeling.

Notus is primarily metabolized by the Cytochrome P450 2D6 (CYP2D6) enzyme. Concomitant use with potent CYP2D6 inhibitors (e.g., Quinidine, Fluoxetine, Paroxetine) is documented to be a clinically significant interaction that may increase the plasma exposure and concentrations of Notus.

Interaction Type Official Regulatory Statement
Serotonergic Risk Caution required with agents like SSRIs and TCAs due to potential for additive effects (Serotonin Syndrome).
CNS Depression Use with alcohol and other CNS depressants may enhance sedative effects.

Regulatory information also advises that individuals who are CYP2D6 Poor Metabolizers may naturally experience higher concentrations of the drug and require specific consideration.

Mechanism of Action

How Notus Works

Notus modulates the respiratory system through three distinct and integrated actions on smooth muscle tone and secretion properties. The first component functions as a mathbfbeta2-adrenergic agonist. It selectively engages beta2-receptors on the smooth muscle cells surrounding the bronchial passages, initiating an intracellular signaling cascade that results in muscle relaxation. This action produces a widening of the air passages (bronchodilation), contributing to an adjustment in airflow dynamics.

Simultaneously, two other components alter the physical state of respiratory secretions. One acts as a mucolytic, disrupting the complex molecular structures, such as disulfide bonds, within thick mucus to reduce its viscosity. The other acts as a secretagogue (expectorant), stimulating the glands to increase the volume of serous fluid secreted into the airways.

The integrated effect influences the mechanics of the natural mucociliary clearance system. By combining bronchodilation with the modification and hydration of secretions, the drug produces an alteration in the physiological state of the respiratory tract that influences secretion transport and expulsion.

Dosage and Administration Information

How to Use Notus: Official Administration Guidelines

Notus, containing the active ingredient Dextromethorphan Hydrobromide, is administered exclusively through the oral route, following dosing and administration rules established by regulatory authorities.

Official Dosing and Frequency

Official instructions define the standard regimen based on the formulation, intended for temporary symptomatic relief. The schedules below are established for these purposes.

Formulation Type Standard Adult Dose (12+ years) Dosing Frequency
Immediate-Release (e.g., Tablets, Solution) 10 mg to 20 mg Every 4 hours
30 mg Every 6 to 8 hours
Extended-Release (e.g., Suspension) 60 mg Every 12 hours

Regardless of the chosen regimen, the total dose taken must not exceed 120 mg in any 24-hour period, as mandated by regulatory guidelines.

Key Administration Requirements

Proper use of Notus involves adherence to specific administration rules:

  • Preparation: Liquid suspensions must be shaken well before measuring the dose. Liquid should be measured using an appropriate device, not a household spoon.
  • Solid Forms: Softgel capsules must be swallowed whole and must not be crushed, divided, or chewed. Chewable tablets should be chewed thoroughly before swallowing.
  • Duration: The medicine is intended for temporary use. If the cough persists or returns after 7 days, use should be discontinued and a healthcare provider consulted.
  • Age and Impairment: Notus is not recommended for use in children under 4 years of age. Caution is generally advised for use in individuals with hepatic (liver) impairment.

Recent Clinical Evidence

Research evidence / Overview of studies for Notus


Evidence for use in Chronic Insomnia

Notus was evaluated in research settings for conditions characterized by fluctuating or episodic manifestations, such as chronic insomnia. The evaluation involved short-term randomized controlled trials (RCTs) used in research exploring how symptoms change over time. These studies monitored non-elderly adult populations, and the research examined outcomes related to systemic or functional imbalance, such as total sleep time and the time it takes to fall asleep.

Findings describe patterns observed in the studies over defined time intervals. Research highlights measurements of differences in patient-reported sleep metrics compared to control groups. These studies contribute to the broader evidence landscape, particularly in research exploring short-term symptom changes.


Evidence for use in Generalized Anxiety Disorder (GAD)

Notus was evaluated in research settings that included individuals with conditions marked by functional limitations, such as Generalized Anxiety Disorder. Research examined outcomes reflecting daily functioning or activity level, utilizing standardized rating tools that are applied in research contexts involving fluctuating or unstable symptoms. The studies monitored non-elderly adult participants diagnosed with GAD.

Studies report how symptoms evolved in the observed populations during the trial period. Data show patterns related to the measurements recorded on specific anxiety scales. Research provides insight into short-term changes, but evidence quality varies across studies, and findings were mixed in some areas regarding specific anxiety symptom clusters.


What is Still Uncertain About Notus

Evidence highlights what is known—and what is still uncertain—about Notus. Sample sizes were modest in many research scenarios, and follow-up durations were limited across all studied conditions, meaning there is limited information for long-term outcomes. Comparative evidence is lacking to fully understand the place of these findings in the broader evidence landscape.

Data for certain groups remain insufficient, meaning subgroup findings are uncertain for populations like older adults, children, or those with complex medical comorbidities. The research provides context but not individual predictions; study results reflect the specific conditions under which they were conducted.

Frequently Asked Questions (FAQ)

Common questions about Notus (FAQ)

Q: What is Notus used for?

Notus is indicated for the treatment of adult patients with advanced or metastatic solid tumors that have a specific genetic change, which is an FGFR2 gene fusion or rearrangement. Official product information states that its use is limited to patients whose disease has progressed following prior systemic therapy.

Q: How does Notus work to treat cancer?

Notus is classified in regulatory documents as a kinase inhibitor that targets the Fibroblast Growth Factor Receptor 2 (FGFR2). Studies indicate that it works by blocking the activity of this specific protein receptor. Regulatory documents state that inhibiting FGFR2 is the mechanism by which Notus exerts its anti-cancer activity.

Q: How long will I need to take Notus?

Official regulatory information indicates that Notus treatment should continue for as long as the patient is observed to be receiving a clinical benefit from the medicine. The decision to stop treatment due to unacceptable toxicity (side effects) or disease progression should be made by the prescribing healthcare provider, based on regulatory guidelines.

Q: Is Notus a form of chemotherapy?

No, Notus is not classified as a traditional chemotherapy drug. Official product documents classify it as a kinase inhibitor, which is a type of targeted therapy. It works by selectively blocking a specific protein (FGFR2) involved in cancer cell growth, unlike conventional chemotherapy.

Q: What should I do if I forget to take my dose of Notus?

Official product labeling provides specific instructions regarding missed doses. Generally, this involves taking the dose on the same day unless the next scheduled dose is due within 4 hours, in which case the dose should be skipped. Patients are advised to follow the official product instructions to return to their regular schedule afterward.

Q: Can I eat grapefruit or drink grapefruit juice while taking Notus?

Regulatory information indicates that grapefruit products should be avoided during treatment with Notus. This is because grapefruit, including the juice, can potentially increase the concentration of the medicine in the blood. Increased levels may raise the risk of experiencing side effects.

Q: What is the most common serious side effect of Notus?

According to official safety information, the most common serious side effect is hyperphosphatemia (high phosphate levels in the blood). Management of hyperphosphatemia is outlined in the official product information and is typically guided by a healthcare professional.

How should Notus be stored and disposed of?

The official labeling for Notus specifies mandatory storage and disposal conditions to maintain product stability and safety.

Storage Requirements

Notus formulations must be stored below 30 C and protected from direct light and heat. The medicine must be kept in its original container and the container must remain tightly closed when not in use. Certain liquid preparations, once opened, have an in-use shelf life (e.g., must be discarded after 4 weeks) to preserve stability.

Handling and Disposal

The medicine must be kept out of the sight and reach of children as a mandatory safety requirement. Used or expired Notus must not be disposed of in household garbage or wastewater. Disposal must follow local regulations for pharmaceutical waste to prevent environmental release.

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

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