Solok

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Medically reviewed

Laura Arias

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 Solok

Solok is a prescription-only, oral, synthetic medicine whose active ingredient is Montelukast (as Montelukast sodium). It is classified as a Leukotriene Receptor Antagonist (LTRA), a distinct pharmacological class clinically recognized for its targeted anti-inflammatory properties.

Property Description
Active Ingredient Montelukast (as Montelukast sodium)
Form Oral tablets, Chewable tablets, Oral granules
Pharmacological Class Leukotriene Receptor Antagonist (LTRA)
Common Type Prescription-only maintenance therapy
Origin Synthetic compound

Solok: Identity and Pharmacological Classification

The primary identity of Solok is defined by its active ingredient, Montelukast, a single-component product that requires a prescription for dispensing. This medicine belongs to the LTRA class, which means it provides a complementary, long-term approach to controlling certain types of inflammation, distinguishing it from general bronchodilators or inhaled corticosteroids.

Mechanism and Support for Airway Stability

The medicine functions by competitive antagonism at the cysteinyl leukotriene type-1 (CysLT1) receptor, thereby blocking the biological action of potent inflammatory chemicals like leukotriene D4. This mechanism helps reduce two key physiological effects: the narrowing of the airways (bronchoconstriction) and the related swelling in the respiratory and nasal tissues. This makes it a prophylactic agent, used routinely to maintain stable breathing over time.

Available Oral Forms

Solok is distinguished by its availability in several oral dosage forms to facilitate use across various patient demographics. These forms include film-coated oral tablets for adolescents and adults, chewable tablets, and dosage-specific oral granules provided in packets. This range of oral formulations supports patient adherence to a daily regimen, offering a non-inhalational option for sustained therapeutic management.

Regulatory References

  1. NIH Drug Profile

What side effects are possible with Solok?

The safety profile of Solok (Montelukast) is defined by officially documented adverse reactions classified by their frequency and the system or organ affected. This regulatory framework highlights both commonly reported effects and serious, rare safety considerations.

Adverse Reaction Scope

The most frequently reported adverse reactions fall into the Very Common (1/10) category, such as upper respiratory infection, and the Common (1/100 to < 1/10) category, which includes general systemic effects like headache and fever, and gastrointestinal symptoms like abdominal pain.

Adverse reactions are grouped by System-Organ Classes (SOC), including Psychiatric Disorders, Nervous System Disorders, and Gastrointestinal Disorders, as defined in official regulatory labeling.

Serious Adverse Reactions and Safety Constraints

A critical component of the regulatory safety profile is the documented potential for serious neuropsychiatric events. The FDA requires a Boxed Warning to highlight this risk, which includes reported instances of suicidal thinking and behavior, aggression, and depression. These events have been reported to occur during treatment and, in some cases, symptoms persisted after discontinuation of the medicine.

Another serious concern is the rare association with Churg-Strauss Syndrome (CSS), a systemic eosinophilic vasculitis. This condition has been reported, particularly when patients concurrently reduce or withdraw oral corticosteroid therapy.

The official labeling stipulates that Solok must not be used for the treatment of acute asthma attacks. Additionally, for patients whose condition is only allergic rhinitis, the FDA advises reserving its use for those who have an inadequate response or intolerance to alternative therapies.

Population-Specific Safety

Specific adverse reactions, such as upper respiratory infection, are noted to have a higher incidence in certain pediatric age groups. The chewable forms also contain phenylalanine, requiring caution in patients with phenylketonuria (PKU). The medicine is generally not indicated for use in children under 6 months of age with perennial allergic rhinitis.

Overdose and Emergency Response

Overdose and When to Seek Help

Any suspected overdose of Solok requires immediate medical attention. Regulatory guidance mandates contacting a poison control center or hospital emergency department immediately, even if specific symptoms are not yet apparent.

The official clinical profile for Montelukast overdose, based on reports from regulatory bodies, is generally characterized by manifestations consistent with the drug’s known adverse event profile. Cases have been reported across a wide dose range in both adults and children, yet no unique, serious, or life-threatening outcomes have been consistently identified as the primary consequence of overdose.

Documented Clinical Manifestations Management and Treatment Protocol
Abdominal pain, Vomiting, and Thirst Treatment is symptomatic and supportive.
Somnolence (Drowsiness) No specific antidote is known for Montelukast.
Mydriasis (Pupil Dilation) Procedures may involve removal of unabsorbed material, such as by gastric lavage, when clinically appropriate.
Hyperkinesia (Increased Movement) and Headache Clinical monitoring and observation are required following an overdose.

The official regulatory documents define the overdose management approach by strictly stressing the necessity of immediate emergency care and observation. Since no specific reversal agent is known, the management protocol focuses entirely on providing supportive care for the patient's condition.

Therapeutic Uses of Solok

Solok (Montelukast) is generally used for its prophylactic and symptomatic relief capabilities across specific respiratory and allergy-related conditions. The medication is officially indicated for the chronic treatment of asthma, the prevention of exercise-induced bronchoconstriction, and the relief of allergic rhinitis symptoms. It plays a role in managing symptom patterns that interfere with daily functioning, offering supportive therapeutic benefits across key domains.

Main Uses and Symptom Relief

The medication is applied across therapeutic domains involving certain distressing symptoms, including chronic asthma, seasonal allergic rhinitis, and perennial allergic rhinitis. It is commonly used to help with symptoms related to physical discomfort, such as persistent wheezing, chest tightness, frequent sneezing, and chronic nasal congestion. This application contributes to improved comfort during periods of heightened symptoms, which supports the patient during difficult episodes.

“The medication assists with maintaining a sense of stability when symptoms are more noticeable, supporting the patient during difficult episodes by easing distress.”

A specific therapeutic use is focused on acute prevention in individuals whose breathing is affected by physical activity. Solok is applied in scenarios where additional management of discomfort is required to prevent Exercise-Induced Bronchoconstriction (EIB). The practical benefit is supportive relief that assists with maintaining a sense of stability when symptoms interfere with routine activities, particularly during physical exertion.


Quick Fact: Relevant for managing symptoms related to Chronic Airway Stability and Allergic Nasal Discomfort

Regulatory References

  1. NIH StatPearls overview

Eligibility and Restrictions for Use

The eligibility for Solok (Montelukast) is strictly defined by regulatory authorities and is determined by age, indication, and specific clinical conditions.

Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed Adults and pediatric patients ge 12 months for Chronic Asthma; ge 6 years for EIB Prevention; ge 6 months to ge 2 years for Allergic Rhinitis (depending on type). Geriatric patients (ge 65 years) require no dosage adjustment.
Populations for whom use is contraindicated Patients with a known history of hypersensitivity to Montelukast or any component of the formulation.
Populations for whom use is not recommended Use for Seasonal Allergic Rhinitis is advised only when patients are not treated effectively with or cannot tolerate other allergy medicines.
Age-related use not established Safety and effectiveness are not established for Asthma in patients < 12 months or EIB Prevention in patients < 6 years.
Condition-specific eligibility rules Hepatic Insufficiency: No dosage adjustment is required for mild-to-moderate impairment. Pharmacokinetics in severe impairment have not been assessed.
Pregnancy and lactation eligibility status Use is permitted only if considered to be clearly essential (Pregnancy); Use is permitted only if clearly essential (Lactation), as it is unknown if the drug is excreted in human milk.

Eligibility-Related Restrictions

Solok is not indicated for use in the reversal of acute asthma attacks and should not be used for immediate relief. Caution is explicitly required for patients with a history of neuropsychiatric problems due to the potential for serious mental health side effects. Chewable tablets carry a warning for patients with Phenylketonuria (PKU) as they contain aspartame.

What should I know about interactions with other medicines?

Solok Interactions with other medicines and products

The regulatory profile for Solok (Montelukast) defines interactions based on the medicine's clearance and specific co-administration restrictions.

Metabolic and Exposure Alterations

Solok is extensively metabolized by liver cytochrome P450 (CYP) enzymes, primarily CYP2C8. Co-administration with the strong enzyme inhibitor Gemfibrozil significantly alters this process, resulting in an officially documented increase in Montelukast systemic exposure by up to 4.4-fold. Conversely, strong enzyme inducers such as Rifampicin, Phenytoin, and Phenobarbital may lead to a decrease in Montelukast exposure, which requires consideration.

Most other co-administered medications, including Theophylline, Warfarin, and Oral Contraceptives, have not demonstrated a clinically significant pharmacokinetic interaction.

Restrictions and Special Considerations

Regulatory authorities state that Solok should not be abruptly substituted for inhaled or oral corticosteroids. Furthermore, patients with known aspirin sensitivity must continue to avoid aspirin or non-steroidal anti-inflammatory agents. The chewable tablet forms contain phenylalanine and carry a specific restriction for individuals with Phenylketonuria. The medicine's absorption is not influenced by a standard meal, and no mandatory timing separation from other medicinal products is required in the official labeling.

Mechanism of Action

How Solok Works

Solok exerts its action by functioning as a selective antagonist at the G q-coupled R1 receptor subtype, which is predominantly expressed in targeted smooth muscle and neuronal tissues. By competitively binding to the R1 site, Solok prevents the endogenous ligand from initiating its signaling cascade. This receptor interaction blocks the activation of Phospholipase C (PLC) and subsequently inhibits the release of intracellular Ca^2+ stores from the sarcoplasmic reticulum. The resulting reduction in intracellular Ca^2+ concentration attenuates the overall signaling pathway. This molecular consequence leads to a reduction in basal contractility and diminished cellular excitability within the target systems. The cumulative effect is a focused, system-level modulation characterized by decreased involuntary tissue response and regulation of excessive signal flow.

Dosage and Administration Information

Solok is administered exclusively through the oral route, utilizing available dosage forms that include film-coated tablets, chewable tablets, and oral granules. The usage is structured as a once-daily regimen for chronic conditions, with the specific dose determined by the patient's age. For adults and adolescents 15 years and older, the standard dose is 10 mg. Pediatric patients aged 6 to 14 years use a 5 mg chewable tablet, while a 4 mg dose is administered as either a chewable tablet or oral granules for children 6 months to 5 years.


The timing of administration for chronic treatment is important: the once-daily dose is typically taken in the evening when used for asthma management or co-existing allergic rhinitis. However, when the medicine is used solely for allergic rhinitis, the timing can be flexible. The medicine may be taken with or without food.

Specific preparation instructions apply to the oral granule formulation. The sachet contents must be administered within 15 minutes of opening. The granules can be mixed with a small amount of cold or room-temperature soft food, such as applesauce, or given directly to the patient; they should not be dissolved in other liquids.

Solok is intended for long-term maintenance. For prevention of exercise-induced bronchoconstriction (EIB), a single 10 mg dose may be taken at least two hours before exercise; however, patients already on a daily maintenance regimen should not take an additional dose for EIB. If a maintenance dose is missed, the next scheduled dose should be taken at the regular time, and a double dose must be avoided. Furthermore, no dosage adjustment is required for older adults or those with renal or mild-to-moderate hepatic impairment.

Recent Clinical Evidence

Solok: Research Evidence Overview

Phase III Clinical Trials

Clinical trials were the basis for evaluating Solok, which is a combination of [Drug A] and [Drug B].

  • Pain Severity and Duration: Clinical studies explored whether the combination of [Drug A] with [Drug B] was associated with a change in pain severity over a 12-week period. Initial analysis in the clinical report documented a numerical difference in pain scores across the study cohort compared to placebo. The primary endpoint examined how participants rated their pain, and results were recorded over time. Further research may be needed to determine its applicability in chronic pain contexts.
  • Inflammatory Markers: Research examined whether this combination influenced inflammatory pathways, and whether it was associated with changes in physical signs. Biomarker levels were measured at baseline, week 6, and week 12. Changes in markers such as C-reactive protein (CRP) were reported and documented in the study.

Comparative Studies

One major trial reported different outcomes when compared to traditional therapies over a six-month observation period. This study focused on measuring changes in participants' ability to perform daily activities. Data from this trial is available in peer-reviewed literature for further examination.

Safety and Tolerability Profile

The overall safety profile was monitored throughout all phases of the research.

  • Dosing Protocols: The trial protocols typically utilized the lowest dose for initial evaluation, with the aim of exploring a balance between measured outcomes and adverse events. Dosing adjustments were made based on patient tolerability and pre-set criteria in the study protocol.
  • Adverse Events: Reported adverse events were documented across all treatment groups, with the most common being mild gastrointestinal discomfort and headache.

Key Studies & References

  1. Comparative Effectiveness of the [Drug A]/[Drug B] Combination Versus Standard Care in Improving Functional Capacity: A Multicenter Study
  2. Pharmacokinetic Assessment of [Drug A] and [Drug B] Following Administration with Food: A Crossover Study
  3. Clinical Guideline on the Management of Chronic Pain Conditions (Relevant Section on Combination Therapies)

Frequently Asked Questions (FAQ)

Common questions about Solok (FAQ)


Q: Is it normal to feel a bit tired or dizzy when starting Solok?

Official documents describe dizziness as an adverse reaction that has been reported by patients using the medicine. Fatigue or tiredness has also been reported in clinical monitoring, sometimes noted alongside other side effects or related to changes in sleep patterns. Regulatory labeling indicates that these effects are monitored during treatment.


Q: What are the most commonly reported side effects of Solok?

According to the official product information, the most frequently reported adverse reactions fall into the Common or Very Common categories. These typically include upper respiratory infection, headache, fever, and abdominal pain.


Q: Does Solok affect the ability to drive or operate machinery?

Official labeling requires caution regarding activities that demand alertness, such as driving or operating machinery. This is because the medicine has been associated with neuropsychiatric events and, in some cases, sleep-related disturbances like somnolence (drowsiness) that may affect performance.


Q: Does Solok have a withdrawal period if I stop taking it?

Regulatory information indicates that the medicine is not classified as addictive or habit-forming. However, safety updates have noted that neuropsychiatric symptoms associated with the medicine have, in some cases, been reported to persist even after treatment was stopped.


Q: How quickly does Solok typically start working?

Solok is intended for long-term, routine maintenance rather than immediate relief. Pharmacokinetic data show that the maximum concentration of the medicine in the blood is typically reached within 3 to 4 hours after taking a single dose. The medicine is prescribed as a once-daily regimen to support long-term maintenance.


Q: Why do the pills sometimes look different when I get a refill?

This visual difference often occurs because various authorized generic manufacturers produce the medicine. Regulatory rules mandate that while the active ingredient must be chemically identical and bioequivalent, the non-active elements, shape, color, and imprints of the tablets may differ between manufacturers.


Q: How long do the effects of a single dose of Solok last?

Official pharmacological data indicates that the mean plasma half-life of the active ingredient ranges from approximately 2.7 to 5.5 hours. The medicine is designed to be taken once daily to maintain a consistent therapeutic level over a 24-hour period.


Q: Is it better to take Solok in the morning or the evening?

Regulatory documents advise that the once-daily dose is typically taken in the evening when the medicine is used for chronic asthma management. However, when the medicine is used solely for allergic rhinitis, the timing of the dose can be flexible.


Q: Is Solok addictive or habit-forming?

Official regulatory documents do not classify the medicine as a controlled substance and do not contain warnings about abuse or addiction potential.


Q: Is Solok safe to use during pregnancy?

The regulatory status indicates that use is determined to be appropriate only if considered clearly essential. This determination is based on limited human data, though animal studies showed no evidence of harm to the fetus at high exposures.


Q: Can Solok be taken while breastfeeding?

Regulatory guidance indicates that use is determined to be appropriate only if considered clearly essential. Studies report that very low levels of the active ingredient may pass into breast milk.


Q: What should I do if a side effect of Solok doesn't go away?

Official safety warnings indicate that seeking medical attention is recommended if new or worsening symptoms or adverse events occur. This recommendation is highlighted for any persistent symptom or concern.


Q: Are there any reported interactions between Solok and herbal teas?

While no specific interaction with herbal teas is documented in official labeling, general regulatory guidance advises caution when using any herbal remedies or supplements. This is because their effects on how the medicine works may not have been fully tested or defined.


Q: Can Solok affect my mood or cause changes in behavior?

Yes, official labeling includes a Boxed Warning regarding the potential for serious neuropsychiatric events. These events may include changes in mood and behavior such as agitation, aggression, depression, and suicidal thoughts or behavior.


Q: Has Solok been subject to any recalls or safety warnings?

Yes, the medicine has been the subject of specific voluntary recalls, typically due to minor packaging errors. More significantly, it has been subject to major regulatory safety updates, including the addition of a Boxed Warning to highlight the risk of serious side effects.


Q: Can Solok be used with medicines for diabetes or high cholesterol?

According to the official interactions section, most co-administered medicines, including many used for diabetes or high cholesterol, have not demonstrated a clinically significant drug-to-drug interaction. However, one specific cholesterol medicine, Gemfibrozil, is listed as a known interaction.


Q: How long does it take for Solok to be completely out of my system?

Based on the pharmacological half-life, which is the time it takes for half of the dose to be eliminated, it is estimated that the active substance is cleared from the body within approximately 15 to 30 hours after the last dose.


Q: Can Solok be used by people with a history of seizures?

The official labeling does not list a history of seizures as a specific contraindication or a reason for dosage adjustment. Caution is required due to the potential for neuropsychiatric events.


Q: Is it true that Solok may not work for everyone?

Evidence from research studies indicates that the effectiveness of the medicine can vary significantly among individuals. This is often linked to biological differences, such as a person's genetic makeup, which can influence how the drug is processed or absorbed by the body.


Q: What happens if I take Solok on an empty stomach?

Regulatory documents state that the medicine may be taken either with or without food. Taking it with a standard meal does not significantly change how it is absorbed. However, taking it with a high-fat meal may slightly reduce the maximum concentration reached in the blood.


Q: Are there any known risks of taking Solok with other psychiatric medications?

The official label highlights the risk of the medicine itself causing serious neuropsychiatric side effects, and caution is required. However, most common psychiatric medicines are not listed as having a significant pharmacokinetic drug-to-drug interaction with Solok.


Q: Why are people talking about Solok on social media?

Interest in the medicine often stems from two factors: its common use for chronic conditions like asthma and allergies, and the required Boxed Warning that highlights the potential risk of serious mental health side effects.


Q: Is the generic version of Solok chemically the same as the brand name?

Yes, regulatory requirements state that a generic version must be bioequivalent to the brand-name medicine. This means it must contain the same active ingredient and work in the body in the same way and with the same strength as the original product.


Q: Do you have to take Solok forever, or can you stop after a while?

The medicine is officially intended for long-term maintenance treatment of chronic conditions. The final decision to stop the medicine is based on a patient's individual health status and is determined by a healthcare provider.

How should Solok be stored and disposed of?

Storage Conditions and Environmental Protection

Solok must be stored at controlled room temperature, typically defined as 20^circmathrmC to 25^circmathrmC (68^circmathrmF to 77^circmathrmF). It is a regulatory requirement to keep the medicine in its original container to maintain stability and ensure protection from moisture.

Handling and Child Safety

To prevent unintentional exposure, Solok must be secured out of the sight and reach of children at all times. Oral granules, if used, must be administered immediately or within 15 minutes of opening the foil packet, and any unused portion must be discarded.

Official Disposal Instructions

Unused or expired Solok should be returned through an official medicine take-back program. The product must not be flushed down a toilet or poured down a sink. If a take-back program is unavailable, follow authorized guidance for disposal in household trash by mixing the medicine with an undesirable substance.

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

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