Formitrol Tosse

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Formitrol Tosse

Treatment option: Cough

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 Formitrol Tosse

Property Description
Active Ingredient Dextromethorphan Hydrobromide (INN)
Form Oral Lozenges (Pastiglie) and Oral Solution/Syrup
Pharmacological Class Non-Opioid Antitussive Agent (Cough Suppressant)
General Purpose Temporary relief of dry, non-productive coughs
Origin Synthetic chemical compound

Formitrol Tosse is a brand-specific, single-ingredient medication recognized as a non-opioid antitussive agent, with the specific purpose of achieving temporary, symptomatic relief from dry, non-productive coughs. The product's classification as a cough suppressant means its primary therapeutic function is to interrupt the cough reflex. Dextromethorphan is used to temporarily relieve cough caused by minor throat or bronchial irritation, such as that accompanying the common cold or flu, but it does not address the underlying cause of the cough itself.

The core component in Formitrol Tosse is Dextromethorphan Hydrobromide, a substance chemically synthesized as a methylated analogue of levorphanol. This synthetic compound is the characteristic feature of the preparation. This differentiation is critical because Dextromethorphan, unlike classic opioids, exerts minimal interaction with the mu-opioid receptors, which ensures its non-narcotic status when used at therapeutic concentrations.

Formitrol Tosse is supplied in common oral dosage formats, which include both lozenges (pastiglie) and a liquid oral solution or syrup. Both preparation types are administered orally, allowing the Dextromethorphan Hydrobromide to be absorbed via the digestive system. The lozenge contains the active ingredient within a solid matrix, while the syrup uses an aqueous or sugary vehicle; both forms are functionally aimed at delivering the core compound to achieve systemic suppression of the cough reflex.

Regulatory References

  1. Dextromethorphan: MedlinePlus Drug Information

What side effects are possible with Formitrol Tosse?

Possible side effects and safety information

This section outlines the officially documented adverse reactions and safety characteristics of Dextromethorphan Hydrobromide, based strictly on government regulatory documents such as FDA Prescribing Information and the European Summary of Product Characteristics (SmPC).

Adverse Reaction Scope and Classification

The most commonly listed adverse effects in official labeling are typically classified as common or uncommon at recommended therapeutic doses. These reactions primarily affect the Nervous System and Gastrointestinal System. Officially documented effects include:

  • Nervous System Disorders: Drowsiness (somnolence) and Dizziness.
  • Gastrointestinal Disorders: Nausea, vomiting, and abdominal discomfort.
  • Immune System Disorders: Hypersensitivity reactions, which may manifest as a rash.

Serious Adverse Reactions and Safety Constraints

The regulatory profile identifies key limitations and risks associated with Dextromethorphan use. The most serious documented risk is the potential for Serotonin Syndrome when used in combination with other serotonergic medicines, particularly Monoamine Oxidase Inhibitors (MAOIs).

  • Serious Risk: The use of Dextromethorphan is strictly contraindicated in patients currently taking, or who have taken, an MAOI within the last 14 days, due to the documented risk of severe reactions.
  • Respiratory Constraint: Contraindications also apply to individuals experiencing respiratory insufficiency or acute asthma attacks, where suppressing the cough reflex may be detrimental.

Population-Specific Safety Notes

Official labels contain specific constraints for certain patient groups:

  • Pediatric Use: Use is generally contraindicated for children under the age of 6 years in many jurisdictions.
  • Hepatic Impairment: Caution is specified for use in patients with severe hepatic impairment, as the liver is involved in the metabolism of the active ingredient.

Overdose and Emergency Response

The official regulatory profile for Dextromethorphan Hydrobromide details the potential for severe toxicity affecting the central nervous system (CNS) and respiratory function. Documented manifestations of overdose include CNS disturbances such as drowsiness, confusion, agitation, slurred speech, unsteadiness (ataxia), hallucinations, and nystagmus (involuntary eye movement). Gastrointestinal symptoms like nausea and vomiting are also commonly noted.

Overdose can escalate to severe or life-threatening outcomes including coma, generalized seizures, and respiratory depression which may progress to apnea (no breathing). The severe condition known as Serotonin Syndrome is also cited as a potential life-threatening manifestation, particularly when other serotonergic agents are involved. The overdose risk is cited as being greater in those with existing hepatic impairment, and breathing problems can be more severe in young children.

When to Seek Immediate Medical Help

Immediate medical attention is mandated for any suspected overdose, regardless of whether the individual feels well, due to the potential for delayed, serious consequences. Urgent contact with emergency services is required if the person has collapsed, had a seizure, has trouble breathing, or cannot be awakened. Treatment procedures documented in official sources are primarily symptomatic and supportive. The use of Naloxone is considered for managing severe CNS and respiratory depression, and hospital monitoring, including an ECG, is required.

Therapeutic Uses of Formitrol Tosse

The active ingredient in Formitrol Tosse is associated with temporary support for cough symptoms, and the product is considered relevant when supportive symptom management is appropriate. The primary therapeutic focus is applied across domains where short-term symptomatic support is needed.

The product is commonly used across conditions presenting with acute episodes, applied to address the dry, irritative symptom pattern linked to organ-specific functional stress, such as minor irritation often accompanying the common cold or seasonal influenza. Symptomatic relief is relevant for managing symptoms that interfere with daily comfort, such as persistent, irritative coughing, and it supports patients during episodes of heightened discomfort.

Formitrol Tosse helps address symptom clusters that interfere with daily functioning and contributes to improved comfort during periods of heightened symptoms. This supports general well-being during symptomatic phases.


Quick Fact: Relief for Irritative Cough Formitrol Tosse is used for managing the intense urge to cough associated with dry, irritative symptom patterns, contributing to easing the overall symptom load.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Formitrol Tosse

The eligibility profile for Formitrol Tosse, which contains Dextromethorphan Hydrobromide, is strictly defined by regulatory documents based on patient age, concurrent medication use, and specific health conditions.


Eligibility Scope

  • Populations for whom use is allowed (as stated in label): Adults and children 12 years and over are approved for use under standard labeled conditions.
  • Populations for whom use is not recommended: Use is generally not recommended for a cough associated with excessive secretions (productive cough) or a chronic cough (e.g., due to asthma or emphysema).
  • Populations for whom use is contraindicated:
    • Individuals with known hypersensitivity to dextromethorphan or any excipient.
    • Patients currently taking or having taken a Monoamine Oxidase Inhibitor (MAOI) within the previous 14 days.
    • Children under 12 years (in many regional product formats).

Condition-Specific Eligibility Rules

  • Hepatic Impairment: Caution must be exercised due to the drug's extensive metabolism in the liver.
  • Renal Impairment: Medical advice should be sought before use in patients with severe renal impairment.
  • Respiratory Status: Contraindicated in patients who are in, or at risk of developing, respiratory failure.

Age and Physiological Status

  • Children under 4 years: Safety and efficacy are not established by systemic clinical trials, and use is not recommended.
  • Pregnancy: Standard doses are generally considered acceptable, but alcohol-containing products are recommended to be avoided.
  • Lactation/Breastfeeding: Use is not recommended by some regulatory agencies unless medically necessary, due to limited data on excretion into breast milk.

Connection to the overall eligibility profile

Regulatory documents define who can and cannot use Formitrol Tosse by establishing absolute contraindications based on drug interactions (MAOIs) and hypersensitivity, alongside strict restrictions related to age and pre-existing physiological limitations, such as severe organ impairment or chronic respiratory diseases. This structure dictates that the drug is reserved only for specific eligible populations.

What should I know about interactions with other medicines?

Documented Interaction Patterns

The official regulatory profile for Formitrol Tosse (Dextromethorphan Hydrobromide) establishes specific restrictions regarding co-administration with other medicines and substances, defining the scope of clinically significant interactions.

Prohibited Combinations and Timing Rules

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is formally contraindicated due to the risk of a serious adverse reaction known as Serotonin Syndrome. This mandatory restriction requires a timing-based separation rule: the medicine must not be used during or within 14 days of stopping MAOI therapy.

Pharmacokinetic and Exposure Interactions

Dextromethorphan is processed through the body's CYP2D6 enzyme. Use with Potent CYP2D6 Enzyme Inhibitors (which include certain antidepressants and heart rhythm medicines) inhibits this metabolic process, resulting in a documented increase in Dextromethorphan plasma concentrations. This increase in systemic exposure elevates the potential for interaction-related effects. A similar effect on drug exposure is documented for consumption of Grapefruit juice. Individuals who are CYP2D6 Poor Metabolizers are also noted in the regulatory documents as a population with naturally higher exposure and prolonged effects.

Pharmacodynamic and Substance Interactions

The product carries warnings regarding additive effects. Combining it with other Serotonergic Agents (such as certain SSRIs or SNRIs) may increase the risk of Serotonin Syndrome due to pharmacodynamic reinforcement. Furthermore, the official label advises that use with Central Nervous System (CNS) Depressants, including alcohol, should be avoided due to the potential for additive effects on CNS functions.

Mechanism of Action

Central Modulation of the Cough Reflex

The drug's mechanism of action is centered on its activity as an agonist at the Sigma-1 (sigma1) receptor, which is selectively localized within the brain's medullary cough center. This interaction modifies the central processing of cough signals, resulting in the raising of the cough threshold. This is a mechanistic cascade that limits the propagation of the efferent reflex command by altering the signal-to-threshold ratio in the brainstem.


Modification of the Afferent Signaling Pathway

The compound modulates the entire reflex arc by influencing the sensitivity of peripheral cough receptors in the airways. By regulating the strength of the incoming (afferent) signal, fewer sensory inputs reach the centrally suppressed cough center. This two-pronged action results in a modified signaling state within the entire cough pathway.


Influence on Neural Pathway Excitability

This core mechanism, involving receptor-mediated signaling, acts to influence the overall excitability of neural pathways associated with involuntary responses. This targeted pathway adjustment influences the regulation of reflex excitability and modifies the efferent nerve impulse associated with involuntary muscular response, leading to an altered pattern of reflex activity.

Dosage and Administration Information

How Formitrol Tosse is Used: Official Administration Guidelines

Formitrol Tosse, containing the antitussive Dextromethorphan Hydrobromide, is strictly administered via the oral route in its approved lozenge and liquid formats. Its use is governed by dosing limits and instructions for short-term symptomatic relief.


Official Dosing and Frequency

Standard dosing regimens for this over-the-counter (OTC) agent are based on dose size and required interval.

Population Typical Single Dose Maximum Daily Dose Dosing Interval
Adults & geq 12 Years 10 mg to 30 mg 120 mg in 24 hours Every 4 to 8 hours
Children 6 to 11 Years 5 mg to 15 mg 60 mg in 24 hours Every 4 to 8 hours

For adults, a lower 10 mg or 20 mg single dose is often taken every 4 hours, while a higher 30 mg single dose may be taken every 6 to 8 hours. The total number of doses should not exceed six within any 24-hour period. Children under 6 years are generally not authorized to use these non-prescription preparations.


Preparation and Administration Instructions

Proper use depends on the specific dosage form:

  • Oral Lozenges: Lozenges must be allowed to dissolve slowly in the mouth; they are not intended to be chewed or swallowed whole.
  • Oral Solution/Syrup: The liquid must be accurately measured using the dosing cup or device provided with the product; household spoons should not be used. The bottle should also be shaken well before measuring the dose.

The medicine is designed for as-needed use and is intended for a short course, generally not exceeding seven days.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Formitrol Tosse


Evidence for use in Acute, Non-Productive Cough

The active ingredient in Formitrol Tosse, Dextromethorphan, was studied in research exploring short-term changes in dry, irritative cough symptoms associated with common colds or other upper respiratory infections. Research explored this question primarily through Randomized Controlled Trials (RCTs) comparing the active ingredient to placebo, and through systematic reviews and meta-analyses. Findings were mixed across the collected evidence; some trials recorded measurements that differed from those in the placebo group, while others did not, leading to scientific discussion regarding the interpretation of the measurements.


Study Outcomes and Populations

Researchers explored findings using two main metrics: objective measures like 24-hour cough counts and subjective tools for patient-reported cough severity and sleep impact. The ingredient was evaluated in generally healthy adults and children aged 6 years and older. However, data for certain groups remain insufficient, including for patients under 6 years of age and for individuals with underlying chronic respiratory conditions, as results apply only to the populations studied.


Follow-up Duration and Research Uncertainty

Clinical research exploring short-term symptom changes typically focused on observation periods limited to several hours or multiple-dose periods lasting no more than four days. Consequently, long-term effects are not fully established, and there is limited information for long-term outcomes. The overall evidence quality varies across studies, and certainty remains low due to methodological challenges and the difficulty in objectively measuring cough variability. Reviewers often conclude that comparative evidence is lacking to establish the ingredient's full role beyond the specific conditions under which the research was observed.

Key Studies & References

  1. Systematic review of randomized controlled trials of over the counter cough medicines for acute cough in adults
  2. Objective and self‐reported evidence of dextromethorphan antitussive efficacy in children, aged 6–11 years, with acute cough
  3. Dextromethorphan - StatPearls - NIH (Regulatory and background information)

Frequently Asked Questions (FAQ)

Common questions about Formitrol Tosse (FAQ)

Q: Does Formitrol Tosse make you feel drowsy or sleepy?

A: According to official product information, drowsiness (somnolence) and dizziness are listed as commonly documented adverse effects. This is noted due to the medicine's central activity.

Q: Are there any common interactions between Formitrol Tosse and general food or drinks?

A: Regulatory documents explicitly mention a specific interaction with Grapefruit juice. Consumption of grapefruit juice is noted as it may increase the amount of the active ingredient in the bloodstream.

Q: Can Formitrol Tosse be used by older adults?

A: Formitrol Tosse is generally included in the adult eligibility population ( ge 12 years). Regulatory profiles generally indicate that no specific dose adjustment is noted for older adults at the approved therapeutic dose.

Q: What if Formitrol Tosse does not seem to work for me?

A: Findings from research exploring symptom relief have been mixed, leading to scientific discussion regarding the interpretation of the measured effect. The effectiveness of any cough suppressant can vary greatly among individuals.

Q: Are there any specific safety warnings for people with underlying health conditions using Formitrol Tosse?

A: Official documents specify that caution is noted for use in people with severe hepatic (liver) or renal (kidney) impairment, and there are contraindications for individuals who are experiencing, or are at risk of, respiratory insufficiency.

Q: What are the primary differences in action compared to a cough suppressant?

A: Formitrol Tosse is, by pharmacological classification, a non-opioid antitussive agent (a cough suppressant). Its action is centered on raising the cough threshold in the brain’s medullary cough center, which is the specific part of the brain that controls the involuntary cough reflex.

Q: What are the ingredients in Formitrol Tosse that are considered inactive?

A: Official regulatory labels (DailyMed) provide a list of inactive ingredients, known as excipients, for each specific product format. These often include common pharmaceutical components such as sugars, syrups, flavors, and preservatives.

Q: Is Formitrol Tosse the same as other medicines used for cough or throat irritation?

A: Formitrol Tosse is classified as a non-opioid antitussive agent, meaning its sole therapeutic purpose is to suppress the cough reflex. Other over-the-counter medicines for cough or throat irritation may belong to different drug classes, such as expectorants or local anesthetics.

Q: How long does it typically take for people to notice an effect after using Formitrol Tosse?

A: Official product information indicates that the antitussive effect of the active ingredient generally begins within 15 to 30 minutes after the medicine is taken orally.

Q: Is Formitrol Tosse available without a prescription in all locations?

A: The active ingredient in Formitrol Tosse is widely approved as an over-the-counter (OTC) medicine for cough relief across many countries. However, the availability and specific sales restrictions may vary across different regional markets.

Q: Where can I find the official regulatory documents for Formitrol Tosse?

A: Official, public information for the drug is accessible through government-run health authorities globally. These authoritative sources include the FDA (DailyMed), NIH (MedlinePlus), and the EMA (SmPC).

Q: Why do some people confuse Formitrol Tosse with an antibiotic?

A: Formitrol Tosse is classified as an antitussive (cough suppressant), meaning it only helps to relieve the symptom of coughing. It is not an anti-infective agent like an antibiotic, which is specifically used to treat bacterial infections.

Q: Can Formitrol Tosse be used alongside herbal supplements?

A: Caution is necessary with any substance, including herbal supplements, that might influence the central nervous system. Interaction warnings should be reviewed to avoid potential additive effects or metabolic inhibition.

Q: Are there any known long-term effects associated with Formitrol Tosse?

A: Clinical research exploring the active ingredient focused on short observation periods, typically no longer than four to seven days. For this reason, official regulatory literature confirms that long-term effects are not fully established or documented.

Q: Do studies suggest that Formitrol Tosse is non-habit-forming?

A: Regulatory documents classify the active ingredient as a non-opioid antitussive agent. This means it is noted to have minimal interaction with mu -opioid receptors and is not categorized as a narcotic when used at approved therapeutic concentrations.

Q: Can Formitrol Tosse be used by people with diabetes?

A: The active ingredient itself does not carry a primary contraindication for diabetes. However, many commercial formats, such as syrups and lozenges, use sugars in their formulation, requiring patients to be aware of the excipients.

Q: Are there any known interactions with psychiatric medications?

A: Official documents define major risks. Use is formally contraindicated with Monoamine Oxidase Inhibitors (MAOIs). Caution is also noted for use with other Serotonergic Agents (like many antidepressants) due to the documented risk of Serotonin Syndrome.

Q: Is the efficacy of Formitrol Tosse influenced by the type of food consumed?

A: Regulatory documents state that Grapefruit juice can inhibit the metabolism of the active ingredient, which may increase its exposure in the body. The specific influence of general food types on the medicine's efficacy is not typically detailed in the official product information.

Q: Are there specific recommendations for people with liver or kidney issues?

A: The official profile specifies that caution is required for patients with severe hepatic impairment (liver issues) or severe renal impairment (kidney issues), due to the drug’s metabolism and excretion.

Q: Does Formitrol Tosse have any known effects on blood sugar levels?

A: The primary action of the drug is on the cough reflex. While the active component is not noted for direct effects on blood glucose, many commercial formats use sugars in their formulation, which is a factor for patients with diabetes to consider.

Q: Is Formitrol Tosse described as having high potential for interaction with other drugs?

A: The regulatory documents define several clinically significant interactions. These include formal contraindications with MAOIs and warnings about co-administration with drugs that inhibit the CYP2D6 enzyme, suggesting a notable interaction profile that must be considered.

Q: Can I use Formitrol Tosse if I have a history of allergic reactions to medicines?

A: Official eligibility documents list a contraindication for individuals with known hypersensitivity to the active ingredient (dextromethorphan) or to any of the product's inactive ingredients. Awareness of specific allergy history is important.

Q: Why does the packaging of Formitrol Tosse mention certain potential contraindications?

A: Safety warnings and contraindications are mentioned on packaging to comply with regulatory mandates and to ensure patient awareness of serious documented risks. A key example is the warning about combination with MAOIs to prevent a severe reaction called Serotonin Syndrome.

Q: How quickly does the effect of Formitrol Tosse wear off?

A: The antitussive effect from standard, conventional dosage forms of Formitrol Tosse is generally reported to last for approximately 3 to 6 hours, as defined in regulatory information.

How should Formitrol Tosse be stored and disposed of?

Storage and Protection Requirements

The storage of Formitrol Tosse, which contains Dextromethorphan, is governed by strict regulatory conditions to maintain its stability and effectiveness.

Condition Regulatory Requirement
Temperature Store at room temperature, typically 20 C to 25 C (68 F to 77 F). Do not exceed 25 C or 30 C as labeled.
Handling Must be protected from light and moisture. Keep the container tightly closed and remain in the original container.
Safety Keep the medication out of the sight and reach of children at all times.

Disposal Instructions

Unused or expired Formitrol Tosse must be discarded responsibly, as dictated by official governmental guidelines. Do not throw away this medicine via wastewater (such as flushing down the toilet) or household trash, as its components are classified to potentially affect the environment. Disposal must be carried out in accordance with local regulations, often through authorized pharmaceutical take-back programs.

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

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