Drimon

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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 Drimon

Property Description
Active ingredient Montelukast sodium
Form Tablet, Chewable Tablet, Oral Granules
Pharmacological class Leukotriene Receptor Antagonist (LTRA)
Common purpose Reduction of airway inflammation and swelling
Origin Synthetic

Drimon is a prescription medication with the active substance Montelukast sodium, a compound chemically recognized for its role in modifying chronic inflammatory and allergic conditions affecting the respiratory system. It is formally classified as an orally active leukotriene receptor antagonist (LTRA), a distinct pharmacological category that functions by regulating specific inflammatory signaling chemicals in the body. As a synthetic compound, Montelukast sodium is administered as a single active ingredient product, ensuring its therapeutic focus is exclusively limited to the leukotriene pathway.

The core function of Drimon is to selectively block the physiological effects of potent inflammatory chemicals called leukotrienes (specifically leukotriene D4 or LTD4) by binding to the CysLT1 receptor. This action provides an intervention in the inflammatory cascade. The general purpose of Drimon is to provide consistent, foundational anti-inflammatory relief by diminishing the underlying swelling and irritation.

The drug is available for oral (systemic) administration in several solid forms, notably including chewable tablets and oral granules alongside the standard tablets. This multi-form presentation is a significant feature, ensuring flexible and accessible intake, particularly for pediatric patients. The final solid oral preparations contain Montelukast sodium alongside standard pharmaceutical excipients necessary for the final dosage form.

Regulatory References

  1. orally active leukotriene receptor antagonist (LTRA)
  2. Pharmacological studies confirm that this action provides a robust intervention in the inflammatory cascade

What side effects are possible with Drimon?

Possible side effects and safety information

The safety profile of Drimon (Montelukast sodium) is established through clinical studies and post-marketing surveillance, with adverse reactions categorized by frequency and the body system affected, according to official regulatory labeling.

Documented Common Adverse Reactions

Adverse reactions most frequently reported in controlled clinical trials (classified as Common) typically involve the Infections and Infestations and Gastrointestinal system-organ classes. These common effects include upper respiratory infection, headache, fever, pharyngitis (sore throat), cough, and abdominal pain. Other common findings are diarrhea, otitis media (ear infection), and sinusitis.

Serious and Less Common Safety Concerns

Official regulatory documents emphasize the potential for serious adverse reactions. A major safety focus is the risk of Neuropsychiatric Events, including changes in mood and behavior such as agitation, anxiousness, depression, and suicidal thoughts and behavior. These effects have been reported in patients across all age groups and sometimes manifest after discontinuing the medication.

Other significant reported post-marketing events include severe immune responses such as anaphylaxis and angioedema, as well as cases of liver injury (hepatitis). A documented warning addresses the potential for Systemic Eosinophilia, which may include features of vasculitis (Churg-Strauss syndrome).

Population-Specific Safety Notes and Restrictions

The medication is not indicated for the treatment of acute asthma attacks. For patients with Phenylketonuria (PKU), the chewable tablet formulation contains phenylalanine. Furthermore, the drug’s safety has not been evaluated in individuals with severe hepatic impairment.

Overdose and Emergency Response

The official regulatory documents define the overdose profile for Drimon (Montelukast sodium) based on documented clinical presentations and mandated emergency actions.

Category Documented Manifestation or Action
Overdose Presentations Abdominal pain, somnolence, thirst, headache, vomiting, and psychomotor hyperactivity.
Emergency Action Seek immediate medical attention or contact a Poison Help line.
Antidote Status No specific antidote is known.

In the event of a suspected or actual overdosage, official labeling requires that emergency medical care must be sought immediately. This required action is mandated because regulatory authorities confirm there is no specific antidote known for Montelukast sodium.

The official management strategy, as detailed in prescribing information, centers on the use of usual supportive measures, which specifically include clinical monitoring and potentially procedural steps to remove unabsorbed material from the gastrointestinal tract. Regulatory analyses of overdosage reports, which have included reviews of pediatric patients 5 years old and younger, have indicated that the observed clinical signs typically align with the drug’s known adverse event profile. The documented symptoms usually involve the CNS and GI systems, presenting as somnolence, vomiting, and abdominal pain. Continuous clinical monitoring is required to manage any manifesting effects, as the official records do not cite a unique category of severe outcomes that extends beyond the documented symptom cluster.

Therapeutic Uses of Drimon

What Drimon Treats: Main Uses and Benefits

Drimon (Montelukast) is commonly used to address conditions involving inflammatory or irritative processes in the respiratory system, offering supportive relief from associated symptoms. The medication is typically applied across three primary therapeutic domains: chronic asthma maintenance, relief of allergic rhinitis symptoms (both seasonal and perennial), and pre-emptive protection against exercise-induced bronchoconstriction.

It supports symptom management in clinical scenarios marked by heightened systemic burden, helping to ease the overall symptom load. The medication is relevant for easing symptoms that include wheezing, coughing, shortness of breath, and persistent nasal symptoms (congestion, sneezing, runny nose).

“This approach assists with maintaining functional stability and contributes to improved day-to-day comfort during symptomatic periods.”


Quick Fact: Relevant for Managing Respiratory Symptoms

Quick Fact: Relevant for Managing Respiratory Symptoms

Drimon is generally prescribed to assist with maintaining functional stability in patients with mild-to-moderate persistent asthma, especially when symptoms related to physical discomfort or inflammatory states interfere with daily functioning.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Drimon?

Eligibility for Drimon (Montelukast) is determined by regulatory agencies based on age, physiological status, and underlying conditions. The most important rule is the absolute contraindication: the medicine must not be used by individuals with known hypersensitivity to Montelukast sodium or any component of the formulation.

Approved and Restricted Populations

Population Group Eligibility Status (Regulatory)
Age Groups Approved for adults, adolescents, and children as young as 6 months for specific indications and formulations. Efficacy is not established for preventing exercise-induced bronchoconstriction in children under 6 years.
Acute Conditions Contraindicated for the relief of acute asthma attacks; it is for maintenance treatment only.
Organ Function Patients with renal impairment are fully eligible, as no dosage adjustment is necessary. Use is restricted in cases of severe hepatic impairment.
Physiological Status Use during pregnancy and lactation is conditional; it is recommended only if clearly needed after a risk assessment, as excretion in breast milk is unknown.

Key Restriction

Drimon must not be used as an abrupt substitute for inhaled or oral corticosteroids.

What should I know about interactions with other medicines?

Interactions with other Medicines and Products

The interaction profile for Drimon (Montelukast sodium) is formally documented based on two primary categories: pharmacokinetic exposure changes and pharmacodynamic restrictions. All statements reflect information from government regulatory documents.

Montelukast is a substrate primarily metabolized by Cytochrome P450 (CYP) enzymes 3A4 and 2C9. It does not inhibit these or other common CYP enzymes at therapeutic concentrations, including 2C8, 1A2, or 2D6.


Documented Exposure-Modifying Agents

Interaction Partner Official Outcome Classification
Rifampin (CYP Inducer) Co-administration decreases Montelukast plasma exposure (AUC) by approximately 40%.
Phenobarbital (CYP Inducer) Co-administration decreases Montelukast plasma exposure.
Gemfibrozil (CYP Inhibitor) Co-administration increases Montelukast systemic exposure (AUC) by approximately 4.4-fold.

Official Pharmacodynamic and Food Restrictions

Official labeling includes mandatory restrictions concerning certain co-administrations. Montelukast must not be abruptly substituted for inhaled or oral corticosteroids. Patients with established aspirin sensitivity must continue to avoid aspirin and other non-steroidal anti-inflammatory agents (NSAIDs).

Food interactions are specific to the dosage form: while tablets and chewable tablets are unaffected by food, a high-fat meal reduces the peak plasma concentration (Cmax) of the oral granules formulation by 35%. Caution regarding co-administration with potent CYP inducers is specifically noted for the pediatric population.

Mechanism of Action

Blocking the Leukotriene Signaling Cascade

Drimon's mechanism is fundamentally defined by the highly selective competitive antagonism of the CysLT1 receptor. This molecular action directly prevents the binding of the potent inflammatory mediator Leukotriene D4 ( LTD4), thereby suppressing the initiation of the CysLT-driven signaling cascade. This molecular interference occurs in pathways where the CysLT signaling mediates downstream physiological effects within the respiratory tract.


Inhibition of Airway Smooth Muscle Contraction and Vascular Permeability

The LTD4 signal antagonism initiates a sequence of physiological consequences. It inhibits the LTD4-induced contraction of airway smooth muscle. Simultaneously, it limits the leukotriene-mediated increase in vascular permeability, thereby reducing tissue fluid accumulation (edema). This action modulates CysLT-mediated smooth muscle tone and tissue fluid dynamics.


Mechanistic Selectivity and Constraints

The drug’s activity is highly specific to the CysLT1 receptor and does not act on secondary receptors like CysLT2 or other major inflammatory pathways. This mechanism is primarily relevant for ongoing pathway modulation and does not rapidly reverse acute changes in muscle tone driven by multi-mediator cascades.

Dosage and Administration Information

Drimon is strictly for oral administration and is available in three primary solid forms: tablets (10 mg), chewable tablets (4 mg and 5 mg), and oral granules (4 mg). The choice of form and strength is dependent on the patient's age and clinical usage context, following the principles outlined in regulatory documents.


Administration Protocol

The most common regimen for the chronic management of conditions like asthma and perennial allergic rhinitis is once daily, with administration often recommended in the evening. Adults and adolescents 15 years and older are prescribed the 10 mg tablet strength once daily. For the prevention of exercise-induced bronchoconstriction (EIB), a single 10 mg dose is taken at least two hours before exercise. This intermittent dose should not be taken by patients who are already receiving the 10 mg daily dose for other uses.


Preparation and Intake Conditions

All forms can generally be taken with or without food. However, specific procedural steps must be followed for certain preparations. Chewable tablets must be fully chewed before swallowing. Oral granules are meant to be administered directly or mixed with small amounts of soft food (such as applesauce or mashed carrots) or breast milk/formula. The granules mixed with food must be consumed entirely within 15 minutes of opening the packet; the mixture should not be stored for later use.


Population and Missed Doses

No dosage adjustment is required for older adults or in cases of mild-to-moderate hepatic or renal impairment. If a scheduled daily dose is missed, patients should take the next dose at the regular time and should not take a double dose to compensate for the one missed.

Recent Clinical Evidence

Drimon: Recent Clinical Evidence

Evidence for Use in Chronic Asthma Management

Research has explored the use of Drimon for persistent asthma through short-term and longer-term Randomized Controlled Trials (RCTs), evaluating it against placebo or standard treatments like inhaled corticosteroids. Researchers monitored outcomes related to functional imbalance, such as lung function (FEV1), frequency of asthma episodes, and rescue inhaler use. Findings describe patterns in measurements of lung function when comparing Drimon groups to placebo groups. However, studies comparing Drimon to standard inhaled corticosteroids showed differences in the magnitude of change measured for certain symptom control outcomes, and comparative evidence is lacking across all available treatments.


Evidence for Preventing Exercise-Induced Bronchoconstriction (EIB)

Drimon was studied for its role in acute, episodic changes in the airways following physical exercise, using short-term RCTs. The focus was on monitoring the immediate physiological strain on the lungs, measured as the sharp decline in air flow (FEV1). Studies reported patterns in the measurements of post-exercise lung function drop when Drimon was administered beforehand. Regulatory summaries document that this research applies when other treatment options have not provided an adequate response or cannot be tolerated.


Research Gaps and Uncertainty Remain

Research has included Drimon across a wide range of age groups, including pediatric patients and adolescents, as well as specific groups like those with aspirin-sensitive asthma. However, data for certain groups remain insufficient, particularly for older adults in dedicated, large-scale studies. Long-term effects are not fully established beyond approximately one year, and the certainty remains low regarding its role as a first-line therapy for allergic rhinitis, where its use is often reserved by regulatory bodies.

Key Studies & References

  1. NICE Guideline: Asthma diagnosis and management

Frequently Asked Questions (FAQ)

Common questions about Drimon (FAQ)

Q: What is the main reason doctors prescribe Drimon?

A: According to official product information, Drimon is indicated for the chronic treatment of asthma, for the prevention of exercise-induced bronchoconstriction (EIB), and to help relieve the symptoms of both seasonal and perennial allergic rhinitis. It is designated as a foundational part of managing these long-term conditions.

Q: Are there any common foods or drinks that might interact with Drimon?

A: The official product information states that Drimon can generally be taken with or without food. Regulatory labeling does not list specific common foods or drinks that must be avoided, though a high-fat meal can reduce the maximum concentration of the oral granules formulation in the body.

Q: Is it true that Drimon can cause changes in sleep patterns?

A: Yes, official safety warnings mention that changes in mood and behavior, which are listed as potential serious side effects, include sleep-related disturbances. These reported effects can involve nightmares, sleepwalking, or difficulty sleeping (insomnia).

Q: Can Drimon be taken along with over-the-counter pain relievers like ibuprofen?

A: Regulatory documents indicate that the medication is generally taken without interaction with common, everyday over-the-counter painkillers. However, official warnings require that patients with known aspirin-sensitive asthma continue to avoid aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen.

Q: Is Drimon considered a long-term or short-term treatment?

A: Regulatory documents indicate the drug is approved for the prophylaxis and chronic treatment of certain conditions. This classification means it is designed and intended for long-term, ongoing management rather than short-term use.

Q: Do studies suggest Drimon works better for certain patient groups?

A: Regulatory information does not include comparative claims about the drug working better for any specific group. However, some clinical trial summaries have noted that older adults may exhibit a different response to this class of medication compared to younger adults.

Q: Can Drimon be crushed or split if it is a tablet?

A: The standard film-coated tablet is generally intended to be swallowed whole. Some official preparation guidelines state that the tablet may be crushed and mixed with a small amount of soft food, but this mixture must be consumed immediately.

Q: What are the general discontinuation effects described for Drimon?

A: Official warnings note that neuropsychiatric events have been reported in some patients after discontinuing the medication. The official restriction notes the drug is not an abrupt substitute for inhaled or oral corticosteroids.

Q: Can older adults use Drimon safely?

A: According to official dosing information, no dosage adjustment is required for older adults. While the drug is approved for use across ages, some clinical research documents note that dedicated, large-scale safety data for this specific population are less extensive compared to data available for younger patients.

Q: Why is Drimon not approved for people with severe hepatic (liver) impairment?

A: Official documentation explains that the safety and efficacy (pharmacokinetics) of the drug in patients with severe hepatic impairment have not been assessed in regulatory-approved clinical studies. Therefore, its use is restricted in this population.

Q: Are there any known long-term side effects associated with Drimon?

A: Serious risks, such as neuropsychiatric events and liver injury, have been identified through clinical trials and post-marketing surveillance. Official research documents acknowledge that long-term effects are not fully established beyond approximately one year of observation.

Q: What is the meaning of the official safety warnings for Drimon?

A: Official safety warnings (sometimes called Boxed Warnings) are regulatory mandates. These warnings serve to call attention to serious hazards that have been associated with the drug and are intended to ensure patients are aware of those risks.

Q: Can I take Drimon if I am on other prescription medicines for a general condition?

A: The drug is primarily processed by specific liver enzymes (CYP enzymes) and may interact with other prescription medicines that affect these same pathways. Because the interaction profile is complex, official information requires that all concurrent prescription medications should be discussed with a healthcare provider.

Q: How quickly does Drimon usually start to have an effect?

A: Regulatory documents describe the drug as being quickly absorbed after oral administration. In adults, the mean peak concentration in the bloodstream is typically reached in approximately 3 to 4 hours after taking the 10 mg tablet while fasting.

Q: How long does one dose of Drimon typically stay active in the body?

A: Based on official pharmacological data, the drug has a mean elimination half-life that generally ranges from 2.7 to 5.5 hours in healthy young adults. The half-life refers to the time it takes for half of the drug to be eliminated from the body.

Q: Does Drimon cause weight gain or weight loss?

A: Official regulatory documents, which list common and serious adverse reactions, do not list weight gain or weight loss among the frequently reported or serious side effects of the medication.

Q: Does taking Drimon make you drowsy or affect driving ability?

A: Official safety information notes that the drug can potentially cause side effects like tiredness, fatigue, and sleepiness (somnolence). Regulatory safety information suggests caution when performing tasks that require concentration, such as driving or operating machinery.

Q: Are there any specific lifestyle changes mentioned to support Drimon's use?

A: Official labeling for the use of the drug in exercise-induced bronchoconstriction (EIB) notes the requirement to always have a short-acting beta-agonist available for rescue. Additionally, patients on a daily dose should not take an extra dose specifically for EIB prevention.

Q: Is Drimon a controlled substance?

A: No. Official regulatory classification confirms that Montelukast is legally designated as a prescription-only medicine. It is not classified as a controlled substance in major regulatory regions.

Q: Are there known interactions between Drimon and herbal supplements?

A: There are no specific reports of interactions with herbal remedies or supplements listed in official regulatory documentation. However, patients must report all supplements to their healthcare provider for full risk assessment, as these products are not regulated like prescription medicines.

Q: Does Drimon affect blood pressure or heart rate?

A: The official list of serious side effects includes the potential for an unusual or fast heartbeat (palpitations). The drug is not noted to commonly affect blood pressure.

Q: How does Drimon interact with alcohol consumption?

A: Official regulatory documents indicate that no known interactions exist between the drug and alcohol. However, official information indicates that alcohol use should be discussed with a healthcare provider, as both the drug and heavy alcohol consumption can independently pose a risk to the liver.

Q: What is the typical timeframe for seeing the full effects of Drimon?

A: While there is no single stated time, clinical trial data for chronic management (such as asthma) shows that changes in respiratory function and other endpoints were assessed over periods of 12 weeks (three months) and longer.

Q: Does Drimon have any known effects on laboratory blood tests?

A: The drug is not known to interfere with any lab tests. Official documentation notes that mild, temporary, and self-limited elevations in certain liver enzyme levels were occasionally observed during clinical trials.

Q: Are there warnings about Drimon and sun exposure?

A: Official regulatory documents do not list photosensitivity (increased sensitivity to the sun) or specific warnings regarding sun exposure as an adverse reaction or restriction.

Q: Are there known interactions with common multivitamins?

A: There are no specific reports of interactions with common multivitamins in official regulatory documents. Patients are required to discuss all vitamin products with their healthcare provider.

Q: How long has Drimon been available on the market?

A: The drug with the active ingredient Montelukast was approved for use in the United States and similar regulatory regions starting in 1998.

Q: Does Drimon interact with birth control pills?

A: Official regulatory reviews indicate that no interaction is known between the drug and oral contraceptives (birth control pills). However, severe gastrointestinal issues like vomiting or diarrhea may affect the efficacy of the contraceptive pill.

Q: Can Drimon be used while operating heavy machinery?

A: Because official warnings note that the drug can potentially cause side effects like tiredness, fatigue, and sleepiness (somnolence), regulatory safety information suggests caution when operating heavy machinery or performing other tasks that require high concentration.

Q: How is Drimon eliminated from the body?

A: Pharmacological studies indicate that the drug and its breakdown products (metabolites) are excreted almost exclusively via the bile (feces). Less than 0.2% of the drug is eliminated via the urine.

Q: What does 'contraindicated' mean for Drimon?

A: A contraindication is a regulatory instruction indicating that the medication must not be used by an individual who has the specific condition or factor listed (such as a known hypersensitivity to the drug). This is because the risk in that situation significantly outweighs any potential benefit.

How should Drimon be stored and disposed of?

How to Store and Dispose of Drimon?

The storage and disposal of Drimon (Montelukast sodium) must strictly follow the conditions defined in the official regulatory labeling.

Storage and Stability Requirements

  • Temperature: Store the medicine at Controlled Room Temperature, which is generally defined as 20 C to 25 C (68 F to 77 F), and do not store above 25 C.
  • Protection: The product must be stored in its original package to ensure protection from both light and moisture.
  • Granule Stability: The oral granules must be administered immediately (within 15 minutes) after the sachet is opened and must not be stored if mixed with food.
  • Child Safety: Drimon must be stored out of the sight and reach of children.

Disposal Instructions

Any unused or expired Drimon product must be disposed of in accordance with local requirements established by the appropriate regulatory authority. Disposal instructions for this non-hazardous medicinal product generally require discarding waste material via an authorized local drug take-back or collection point.

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

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