Storilat

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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 Storilat

Property Description
Active ingredient Carbamazepine
Form Tablet (Oral)
Pharmacological class Antiepileptic Drug (AED) / Mood Stabilizer
Common use Control of nerve hyperactivity
Origin Synthetic (Dibenzazepine derivative)
Status Prescription-Only Medicine

Storilat is a synthetic, prescription-only medicine whose fundamental constituent is the active ingredient Carbamazepine. This single-active-ingredient product, structurally defined as a dibenzazepine derivative, is manufactured for oral administration in a solid tablet form.

Carbamazepine is included on the Model List of Essential Medicines due to its clinical significance. The drug's chemical classification is formally represented by the Anatomical Therapeutic Chemical (ATC) code N03AF01, placing it specifically within the anti-epilepsy subclass.

Classification and General Therapeutic Purpose

Storilat is primarily categorized as an antiepileptic drug (AED), or anticonvulsant, with an established secondary classification as a mood stabilizer and antimanic agent. This dual pharmacological grouping defines the drug's general purpose: to mitigate pathological hyperactivity within the central nervous system. Clinical experience has confirmed its effectiveness in providing stability to overactive nerve cell membranes, which is a significant factor in managing conditions marked by electrical instability.

The drug achieves this by functioning as a voltage-gated sodium channel blocker, which is its core physiological action. This medicine works by reducing abnormal electrical activity in the brain. By modulating these essential channels, Storilat limits the capacity of nerve tissue to generate and spread excessive, rapid electrical impulses, thus restoring a more regulated pattern of nerve communication.

Regulatory References

  1. World Health Organization (WHO)

What side effects are possible with Storilat?

Possible Side Effects and Safety Information

The possible side effects and safety characteristics of Storilat (Carbamazepine) are categorized by official regulatory bodies based on how frequently they are observed and the physiological systems involved. This regulatory information defines the overall safety profile of the medicine.

Common Adverse Reactions and Systemic Patterns

The most frequently documented adverse effects, often occurring at the start of treatment, are primarily related to the Nervous System Disorders. These include dizziness, drowsiness (somnolence), and unsteadiness or lack of coordination (ataxia). Common effects also involve the Gastrointestinal System, such as nausea and vomiting, and the Ophthalmic System, including blurred or double vision.

Serious Adverse Reactions and Safety Constraints

Official labeling emphasizes the potential for rare but serious adverse reactions that require specific attention. These include potentially fatal severe skin reactions, specifically Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), which generally emerge during the first few months of therapy. The medicine is also associated with rare but severe Hematologic Abnormalities, such as Aplastic Anemia and Agranulocytosis. Risk of suicidal ideation and behavior is also documented and may emerge as early as one week after initiating treatment.

Population-Specific Safety Notes

Specific safety considerations are noted for certain groups. For example, individuals of Asian ancestry carrying the HLA-B*1502 allele have a substantially higher documented risk of developing SJS/TEN. The medicine is contraindicated in patients with a history of bone marrow depression or known sensitivity to related tricyclic compounds. Caution is also advised for use in the geriatric population due to an increased risk of specific effects, including confusion and low sodium levels (hyponatremia).

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Storilat (Carbamazepine) overdose is structured around documented acute toxicity primarily affecting the central nervous system (CNS) and the cardiovascular system. Overdose manifestations documented in prescribing information include signs of CNS depression such as somnolence, ataxia (imbalance), nystagmus, and dysarthria. Severity can progress to life-threatening outcomes including coma, generalized seizures, and respiratory depression.

Cardiovascular disturbances are documented, including hypotension, tachycardia, and conduction issues like QRS widening, which may lead to life-threatening arrhythmias or cardiac arrest. Systemic complications such as acute renal failure and hyponatraemia are also noted. Immediate medical attention is required for any suspected overdose or symptom deterioration, as mandated by official emergency-response statements, and the patient must be admitted to hospital for observation.

Management is symptomatic and supportive, as no specific antidote is known. Officially described supportive measures include the use of activated charcoal and continuous cardiac monitoring. Observation periods are necessary, particularly due to the potential for delayed absorption from controlled-release formulations. Clinical guidance indicates that children may develop severe features at lower serum concentrations.

Therapeutic Uses of Storilat

Storilat's therapeutic application is concentrated on conditions involving heightened neurological responses, and it is applied in addressing key therapeutic domains. It is considered relevant in contexts marked by increased discomfort or tension, providing additional symptomatic support in conditions marked by severe, uncontrolled nerve signaling or pathological mood shifts.

The medication is commonly used across conditions presenting with acute or episodic manifestations, which include the long-term management of epilepsy (specifically partial and generalized tonic-clonic seizures), the unique pain syndrome of trigeminal neuralgia, and the stabilization of acute manic and mixed episodes in Bipolar I Disorder.

“The medication helps address symptom clusters that may become intense or disruptive, contributing to improved comfort during symptomatic periods.”


Quick Fact: Relief for Intense Nerve Pain

Storilat is relevant across therapeutic domains where additional symptomatic support is needed, and is often used during phases when symptoms become more noticeable. Its specific use in trigeminal neuralgia assists with easing the severe, sudden, shock-like facial pain, which is considered relevant for easing symptoms that create noticeable physiological strain.

Regulatory References

  1. MedlinePlus Drug Information overview

Eligibility and Restrictions for Use

This section summarizes the official population eligibility rules for Storilat (Carbamazepine) as documented by regulatory authorities.

Populations for Whom Use is Contraindicated

The medicine is strictly contraindicated and must not be used by patients who have a documented history of bone marrow depression, or a known hypersensitivity to the active ingredient or to any of the structurally related tricyclic compounds. Use is also prohibited in patients with a history of hepatic porphyrias (e.g., acute intermittent porphyria) and for those currently taking Monoamine Oxidase Inhibitors (MAOIs).

Age and Indication Eligibility

  • Adults: Approved for all labeled indications.
  • Children: Use is established for epilepsy (partial and tonic-clonic seizures) in children 12 years and older, and on a weight-basis for younger children. The safety and efficacy are not established for treating bipolar disorder or trigeminal neuralgia in pediatric patients.
  • Older Adults: Use requires caution due to the greater risk of developing hyponatremia and the potential for age-related changes in organ function.

Conditional Use and Restrictions

Pregnancy: Use is restricted due to the potential for fetal harm (e.g., congenital malformations). It is only recommended when the expected benefits significantly outweigh the risks.

Genetic Risk: Patients of certain Asian ancestries (e.g., Chinese, Korean, Filipino, Taiwanese) must be screened for the *HLA-B1502 allele** due to a heightened risk of severe skin reactions. Patients who test positive should generally not be treated.

Organ Function: Storilat should be used with caution in patients with pre-existing conditions affecting the heart, liver, or kidneys, requiring a critical benefit-to-risk appraisal.

What should I know about interactions with other medicines?

Storilat (carbamazepine) is a strong inducer of the cytochrome P450 enzyme system, specifically CYP3A4, which is the primary mechanism for its extensive interaction profile. This induction accelerates the metabolism and significantly reduces the plasma concentrations of many co-administered medicines that are substrates for this enzyme, potentially leading to treatment failure.

Official Regulatory Interaction Categories

Interacting Product Category Practical Regulatory Implication (Result)
Strong CYP3A4 Substrates (e.g., hormonal contraceptives, some antipsychotics, some immunosuppressants) Decreased effectiveness of the co-administered medicine; requires dose adjustment or alternative therapy, such as non-hormonal contraception.
CYP3A4 Inhibitors (e.g., macrolide antibiotics, certain calcium channel blockers) Increased plasma concentrations of Storilat, necessitating the monitoring of Storilat levels to mitigate potential toxicity.
Monoamine Oxidase Inhibitors (MAOIs) and Nefazodone Co-administration is contraindicated. A washout period of at least 14 days is required between discontinuing an MAOI and starting Storilat.
Grapefruit Juice Increases Storilat plasma concentrations by inhibiting its metabolism; concurrent ingestion should be avoided or significantly limited.

Co-administration with other anti-seizure medicines, such as valproic acid or phenytoin, also affects Storilat levels and requires therapeutic drug monitoring. This extensive enzyme induction is the foundation of the drug's official interaction constraints.

Mechanism of Action

The action of Storilat (Carbamazepine) is highly specific, focusing on the fundamental electrical signaling mechanisms within the central nervous system ( CNS). It achieves its physiological effects by selectively targeting specific patterns of high-frequency neuronal discharge.

Selective Na^+ Channel Stabilization

The drug’s core mechanism is the use- and state-dependent blockade of Voltage-Gated Sodium Channels ( Na v), which are critical for generating nerve impulses. Storilat preferentially binds to these channels when they are in their inactivated state, typically achieved during periods of rapid firing. This interaction stabilizes the channel in its non-functional state, slowing its recovery and causing the nerve membrane to enter a prolonged refractory period. This mechanistic domain acts within the molecular cascades that govern action potential initiation and propagation.

Functional Dampening of Nerve Electrical Activity

The molecular blockade translates directly into a functional effect: the suppression of high-frequency neuronal discharge. By limiting the ability of overactive neurons to conduct successive electrical impulses, the drug restricts the spread of synchronous, high-frequency electrical activity across neural networks. This physiological effect results in a reduction of electrical conductance in the CNS, but it is constrained in tissues firing at normal, low frequencies due to the use-dependent nature of the mechanism.

Dosage and Administration Information

Official Administration Guidelines for Storilat (Carbamazepine)

Storilat is administered primarily by the oral route, though an intravenous (IV) form is approved for short-term, temporary replacement when oral intake is not possible. Treatment is defined across core domains of use.


Administration Scope

Feature Official Instruction
Dosing Regimen Therapy must begin with a low initial dose and be gradually titrated to an effective maintenance level. The maximum daily dose for adult epilepsy is 1600 mg.
Frequency and Timing Immediate-Release (IR) forms are taken in divided doses multiple times per day and should be taken with food. Extended-Release (ER) forms are generally taken twice daily (every 12 hours) and may be taken with or without food.
Special Procedural Conditions Extended-release tablets must be swallowed whole and cannot be crushed or chewed. When discontinuing treatment, the dose must be gradually tapered; abrupt withdrawal is prohibited.
IV Replacement Rules The total daily IV dose is calculated as 70% of the previous oral dose and administered over four 30-minute infusions, limited to a maximum course duration of seven days.
Population Rules Specific lower starting doses are outlined for older adults managing trigeminal neuralgia, and dosing for pediatric patients is typically weight-based.

Connection to the Overall Use Protocol

The official administration protocol mandates a structured sequence that prioritizes a controlled, gradual introduction of the medicine to establish an appropriate maintenance dose within label-defined limits. This protocol specifies the acceptable routes (oral/IV), determines the necessary frequency based on the formulation (IR vs. ER), and provides mandatory procedural steps for handling the dosage form and discontinuing treatment.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Storilat

This section describes the types of clinical studies that have been conducted to evaluate Storilat (Carbamazepine), the specific measurements that researchers explored, and the current limitations within the evidence base. This information reflects group patterns observed in studies and does not predict individual outcomes.


Evidence for Seizure Control in Epilepsy

Clinical evidence is built upon Randomized Controlled Trials (RCTs) and comprehensive Systematic Reviews. Research explored the medicine’s use for exploring outcomes related to focal onset seizures and generalized tonic-clonic seizures in both children and adults. Studies monitored outcomes such as the proportion of patients remaining seizure-free over defined intervals (e.g., six months). Findings describe patterns observed in these groups, with research examined the measured outcomes in comparison to other active control medicines. The available evidence for this domain is categorized as moderate.

Research for Trigeminal Neuralgia (Severe Nerve Pain)

This evidence base is largely derived from Systematic Reviews and aggregated analyses of multiple studies. Research explored the medicine’s use in middle-aged and older adults presenting with this acute facial pain. The principal outcomes that researchers studied were measurements of change in pain intensity and measurements of change in the frequency of painful episodes. The available evidence for this domain is categorized as high.


Key Research Gaps and Uncertainties

Research highlights several areas where further investigation is needed. Across all indications, data are still emerging regarding the full context of long-term outcomes and the durability of measured effects. For epilepsy, the findings were mixed or uncertain for some seizure subtypes, and comparative evidence against certain newer treatments is lacking. In Bipolar I Disorder, long-term data regarding the sustained use of the medicine as a single maintenance therapy is not fully established. Ultimately, studies provide context but not individual predictions, and findings describe group patterns, not personal outcomes.

Key Studies & References

  1. Carbamazepine in the treatment of bipolar disorder: a systematic review
  2. WHO Model List of Essential Medicines 23rd list (2023)

Frequently Asked Questions (FAQ)

Common questions about Storilat (FAQ)


Q: How quickly does Storilat start to work after I take it?

A: Official product information indicates that the medicine's absorption can be slow and variable. While immediate effects may vary, it often requires several weeks of consistent use to achieve the stable concentrations necessary for the full intended effect. This timeframe is dependent on the condition being treated.


Q: What kind of stomach problems can Storilat cause?

A: Adverse reaction listings state that issues involving the gastrointestinal system are common, particularly at the start of treatment. The most frequently reported issues include nausea and vomiting. Less commonly reported effects in official documents may include dry mouth and constipation.


Q: What happens if I miss a dose of Storilat?

A: Regulatory-based patient advice describes general actions to take if a dose is missed, which often includes taking the dose when remembered unless it is almost time for the next dose. Official instructions caution that doubling the dose is not recommended to compensate for a missed dose.


Q: Can I stop taking Storilat suddenly if I feel better?

A: Official administration guidelines caution against suddenly stopping this medicine, even if symptoms appear to have improved. Treatment must be gradually tapered over time, and abrupt withdrawal is prohibited. Stopping suddenly can increase the potential for adverse events, such as an increase in seizure frequency.


Q: How long can a person safely stay on Storilat?

A: The intravenous form of this medicine is restricted to a short course, generally no longer than seven days. For the oral tablets used for chronic conditions, no maximum duration is specified in official labeling. The length of long-term oral use is determined through standard medical supervision and periodic evaluation.


Q: Does Storilat affect fertility?

A: Regulatory documentation addresses the potential risks of using the medicine during pregnancy. However, official documents do not establish clear conclusions regarding the medicine’s overall effect on human fertility.


Q: How is Storilat eliminated from the body?

A: The medicine is extensively processed by the liver, primarily through a metabolic pathway called the CYP3A4 enzyme system. The resulting inactive compounds, or metabolites, are then largely removed from the body through excretion in the urine.


Q: What happens if I take too much Storilat?

A: Taking more than the prescribed amount is considered a medical emergency due to the risk of toxicity. Overdose is associated with severe symptoms, including extreme drowsiness, unsteadiness, visual issues, and potentially changes in cardiac (heart) function.


Q: What is the main difference between Storilat and the medicine my friend takes for the same condition?

A: Storilat is officially classified as an antiepileptic drug (AED) that works by stabilizing voltage-gated sodium channels in nerve cells. Other medicines used for the same condition may belong to a different chemical class and achieve their effects by targeting other chemical pathways.


Q: Are the side effects of Storilat permanent?

A: Official information indicates that common side effects, such as dizziness and drowsiness, often appear early and may lessen or resolve as the body adjusts to the medicine. However, it is noted that rare but very serious side effects, such as severe skin reactions or blood disorders, have the potential for long-term health consequences.


Q: Is it common to feel very tired when starting Storilat?

A: Yes, drowsiness (somnolence) and dizziness are listed in regulatory documents as very common adverse reactions. These effects are particularly noted to occur during the initial phase of therapy as the body adapts to the medicine.


Q: Can Storilat cause weight gain?

A: Some regulatory and high-level health information sources have reported weight increase as a possible adverse effect. Changes in metabolism or appetite are known to occur with some medicines in this class.


Q: Does Storilat affect my ability to drive or operate machinery?

A: Official safety information advises caution regarding the operation of complex machinery or driving. This is because the medicine may cause drowsiness, dizziness, or unsteadiness, and the full effects on alertness and motor skills should be understood first.


Q: Is Storilat addictive?

A: The medicine is not classified as a controlled substance by the US government. This regulatory status indicates that it is not generally recognized as having a high potential for dependence or abuse.


Q: Is Storilat the same as the generic version?

A: The active ingredient in Storilat is carbamazepine. Generic versions contain the exact same active ingredient. When approved by the FDA, generic products are generally considered to be therapeutically equivalent to the brand-name product.


Q: Do I need special monitoring while taking Storilat?

A: Yes, official safety labeling stresses the need for special monitoring. Due to the potential for rare but serious blood disorders and liver issues, patients are often required to have specific blood tests before starting therapy and periodically while taking the medicine.


Q: Can Storilat affect the results of blood tests?

A: Yes, regulatory documents note that the medicine can sometimes cause changes in certain lab results. These changes can affect tests related to hematologic (blood cell) counts and liver function.


Q: Is it possible for Storilat to stop working after a while?

A: Regulatory guidance notes that, like other anti-seizure medicines, it is possible for the medicine to stop providing adequate control of symptoms over time. If symptoms begin to recur or worsen, regulatory guidance notes the importance of clinical review.


Q: Is Storilat considered a high-risk medication?

A: Official labeling includes a Boxed Warning—the highest safety warning—which highlights the potential for rare but serious and potentially fatal adverse reactions. These reactions, such as severe skin reactions and blood cell abnormalities, place it in a category requiring specific safety protocols.


Q: Why is Storilat sometimes used for conditions other than the main one listed?

A: Storilat is officially approved for multiple therapeutic uses, which include specific types of seizures, a severe type of facial nerve pain, and mood episodes related to Bipolar I Disorder. This is because its core function of regulating nerve hyperactivity applies to multiple conditions.


Q: What research studies have been done on Storilat?

A: Official evidence for this medicine is based on studies, including Randomized Controlled Trials and Systematic Reviews. Research has investigated outcomes related to controlling seizures, managing pain intensity, and stabilizing mood in the contexts of its three main approved indications.


Q: Does the time of day I take Storilat matter?

A: Yes, to maintain a stable level of the medicine in the blood, it must be taken as prescribed. The specific formulation determines the frequency; for example, extended-release forms are often prescribed in divided doses, such as twice daily (every 12 hours).


Q: Can I take herbal supplements while on Storilat?

A: Official interaction information notes that Storilat strongly affects the liver enzyme system (CYP3A4). Many herbal and dietary supplements may interact with this enzyme, which can alter the medicine’s action or the risk of side effects.


Q: Why does Storilat need to be taken more than once a day?

A: The medicine is often taken in divided doses, such as two or more times a day, because its half-life—the time it takes for the body to clear half of the drug—is relatively short. This routine helps ensure a steady, therapeutic concentration of the medicine is maintained throughout the day.


Q: Can Storilat cause changes in my mood?

A: Yes, official labeling is specific regarding the potential for changes in mood or behavior, including a documented risk of suicidal thoughts and actions. The medicine is also officially used as a mood stabilizer in certain contexts, confirming its effect on mood regulation.


Q: Why do official documents mention multiple possible uses for Storilat?

A: Official documents define the medicine by its multiple pharmacological properties, classifying it as both an Antiepileptic Drug (AED) and a Mood Stabilizer. This dual classification reflects its established effectiveness in controlling pathological nerve hyperactivity across several distinct conditions.


Q: Is it possible to be allergic to Storilat?

A: Yes, official labeling strictly contraindicates the use of this medicine in patients with a known hypersensitivity (allergic reaction) to the active ingredient or to structurally related chemical compounds, such as certain antidepressants.


Q: Is Storilat covered by most insurance plans?

A: The active ingredient, carbamazepine, is listed on the World Health Organization’s Model List of Essential Medicines. Since it is available in a less expensive generic form, these factors often contribute positively to the medicine's accessibility and insurance coverage.


Q: Do I need to avoid sun exposure while taking Storilat?

A: Some patient information based on regulatory warnings advises caution regarding sun exposure. This is due to a reported potential for the medicine to increase the skin's sensitivity to sunlight, a condition known as photosensitivity.


Q: Is Storilat a biologic medicine?

A: No, Storilat is not a biologic medicine. It is classified as a synthetic product because its active ingredient, carbamazepine, is a small-molecule chemical compound that is created through chemical synthesis.

How should Storilat be stored and disposed of?

Storage and Disposal of Storilat (Carbamazepine)

The official labeling mandates specific requirements to maintain product stability and ensure safety.

Storage Requirements

Storilat tablets must be stored at Controlled Room Temperature, 20 C to 25 C (68 F to 77 F). It is required to protect the medication from moisture and store it in a tight, light-resistant container. The product must be kept out of the reach of children as a critical safety measure.

Disposal Instructions

Unused or expired Storilat should be disposed of according to local regulations, preferably through a drug take-back program. It is prohibited to flush the medicine down the toilet or sink, as it is not included on the FDA's flush list. If a take-back program is unavailable, mix the tablets with an unappealing substance like dirt before disposal in household trash.

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

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