Sintokalm

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Sintokalm

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Medically reviewed

Rosario Oropesa

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 Sintokalm

Property Description
Active ingredient Potassium Bromide (KBr)
Form Solution or Tablet (Oral preparation)
Pharmacological class Sedative Agent / CNS Depressant
Common use Reducing nervous hyper-excitability
Origin Synthetic inorganic salt

What Type of Medicine is Sintokalm and What is its Composition?

Sintokalm is classified as a sedative agent and a Central Nervous System (CNS) Depressant, utilized for its ability to temper nervous system activity. The active constituent is Potassium Bromide (KBr), which is a monobasic salt of hydrobromic acid. This compound is synthetic and represents a classic/traditional medicine recognized for producing calming effects. The agent functions by modulating central nervous system function. Sintokalm is typically a monocomponent preparation formulated primarily to deliver the specific action of the bromide salt.

Sintokalm: Available Forms and General Administration Type

Sintokalm is an oral preparation administered via the oral route, designed for systemic absorption to reach the central nervous system. The medicine is generally supplied in two primary dosage form(s): a dissolved aqueous solution or as compressed tablets. The bromide ion exhibits high bioavailability following oral ingestion and maintains a prolonged presence in the systemic circulation. This oral form ensures the compound is efficiently distributed to exert its intended sedative effect on neural excitability.

What is the General Purpose of this Sedative Agent?

The general purpose of Sintokalm is to foster a state of functional nervous calm by influencing the brain’s equilibrium. The functional part of the compound, the bromide ion, operates by enhancing inhibitory processes in the cerebral cortex, specifically by potentiating gamma-aminobutyric acid (GABA)-ergic inhibition. This pharmacological mechanism facilitates the restoration of nervous balance and reduces overall nervous system hyper-excitability, such as restlessness or heightened sensitivity to stimuli.

Regulatory References

  1. NIH/PMC5385730

What side effects are possible with Sintokalm?

Possible Side Effects and Safety Information

The official safety profile of Sintokalm (Potassium Bromide) is structurally defined by the risk of Bromism, a syndrome of toxicity that results from the drug's tendency to accumulate in the body due to its long half-life and slow clearance. Adverse reactions are therefore classified as being directly Dose-Dependent and associated with prolonged administration.

Adverse Reaction Categories

Adverse reactions listed in regulatory documents are classified by the physiological systems they affect. The most commonly documented symptoms of early or mild accumulation may include:

  • Nervous System Disorders: Effects such as drowsiness, confusion, headache, ataxia (incoordination), and tremors.
  • Skin and Subcutaneous Tissue Disorders: The potential for bromoderma, which refers to various skin eruptions, often acneiform, associated with accumulation.
  • Gastrointestinal Disorders: Listed effects include nausea and vomiting.

In cases of severe accumulation, the safety labeling documents potentially serious adverse reactions, including profound neurological depression, delirium, and severe psychotic symptoms.

Safety Restrictions and Special Populations

The safety framework highlights specific restrictions and population concerns related to drug clearance. Severe Renal Disease is cited as a restriction because the drug is primarily cleared by the kidneys, and impairment drastically increases the risk of toxic accumulation. Similarly, older adults may face an increased risk of accumulation due to the potential for age-related decline in renal function. Hypersensitivity to any bromide-containing preparation is also listed as a safety restriction.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose or chronic overexposure to the active ingredient in Sintokalm, Potassium Bromide (KBr), is officially documented in regulatory literature as leading to a state of intoxication known as Bromism. This condition affects the Central Nervous System (CNS), skin, and gastrointestinal system.

Documented Overdose Manifestations

System Symptoms and Signs (as per Regulatory Sources)
Neurological/Psychiatric Lethargy, somnolence, confusion, ataxia, tremor, slurred speech, delirium, and psychosis.
Dermatological Acneiform dermatitis (bromide rash) and other characteristic skin lesions.

Severe Outcomes and Emergency Actions

Severe toxicity can progress from stupor to coma and is considered potentially fatal with high, chronic exposure. The official guidance requires users to seek medical attention immediately upon suspected overdose or in the event of accidental human ingestion.

No specific antidote is documented in official prescribing information. Management is supportive and procedural, focusing on enhancing the elimination of the substance. This often involves the administration of sodium chloride or appropriate chloruretic agents, such as loop diuretics, to accelerate renal clearance. Close monitoring of serum bromide concentration is required to manage toxicity. Patients with pre-existing renal insufficiency are noted in labeling as being at increased risk for intoxication.

Therapeutic Uses of Sintokalm

What Sintokalm Treats: Main Uses and Benefits

The active component of Sintokalm is applied in domains involving nervous system sedation and anti-seizure support. The medication may be part of symptomatic management for symptoms that stem from severe, chronic neural hyperexcitability.

Control of Refractory Seizure Symptoms

Sintokalm is applied across domains where additional symptomatic support is needed to manage convulsive symptoms and overall neural instability characteristic of certain forms of epilepsy. It is commonly used when first-line anti-seizure medications have proven inadequate, making it relevant in clinical settings that involve acute or unstable symptom patterns, such as refractory seizure disorders. The primary therapeutic benefit may be a contribution to easing the overall symptom load by assisting with seizure frequency and severity, which helps maintain a sense of stability when symptoms are more noticeable. The compound is commonly used to help with symptom clusters that may become intense or disruptive, such as those related to convulsions and generalized restlessness. Its relevance is associated with symptoms of increased neurological or muscular activity, such as convulsive symptoms like generalized tonic-clonic seizures and severe myoclonic episodes.

“This application provides support that helps ease the overall symptom burden in conditions where functional stability becomes affected.”

Mitigation of Nervous System Hyper-Excitability

The compound is considered relevant in contexts marked by increased discomfort or tension, addressing symptoms linked to general nervous system overactivity, reflecting its traditional role. This is relevant for managing symptoms that create noticeable physiological strain, such as persistent restlessness and increased irritability. Sintokalm helps induce a functional calmness and supports general well-being during symptomatic phases by assisting with maintaining functional stability, providing supportive relief when symptoms interfere with routine activities and contributes to easing the overall symptom load.


Quick Fact: Relief for Nervous Hyper-Excitability The compound is considered relevant for managing symptom clusters that may become intense or disruptive, such as those related to convulsions and generalized restlessness, providing supportive relief when symptoms interfere with routine activities.

Eligibility and Restrictions for Use

Who can and cannot use Sintokalm?

The population eligibility for Sintokalm (Potassium Bromide) is strictly defined by regulatory documents, focusing on absolute contraindications and age restrictions.

Contraindicated and Restricted Populations

Use is absolutely contraindicated in pregnant individuals and those who are breastfeeding. The medicine is also prohibited for patients with pre-existing conditions, including bronchial asthma, hypoalimentation, or established nutrition disorders, and those with known hypersensitivity to bromide.

Age and Condition-Specific Eligibility

Sintokalm is generally permitted for use in children and adolescents starting from approximately six months of age, as documented regulatory schedules support use in this age group for specific generalized seizure types. Use is not recommended for absence seizures, myoclonic seizures, or tonic seizures, as the medicine is documented as ineffective and may risk seizure provocation. Additionally, caution and careful monitoring are required for patients with compromised renal function.

What should I know about interactions with other medicines?

Sintokalm is an herbal product containing St. John's wort (Hypericum perforatum). The potential for interactions with other medicines is clinically significant, stemming primarily from the presence of hyperforin, an active component. St. John's wort is known to affect the body's natural processes for breaking down certain medications (metabolism and transport) and can also have additive effects on chemical messengers in the brain.

Potential Interacting Medicines and Products

St. John's wort can affect the concentration and action of numerous prescription drugs. Known classes of interacting medicines include:

  • Medicines for Depression and Anxiety: Combining Sintokalm with other antidepressants, such as selective serotonin reuptake inhibitors (SSRIs) or triptans, can lead to an increased risk of a serious condition related to excessive serotonin activity in the brain.
  • Oral Contraceptives: Concomitant use may reduce the effectiveness of hormonal birth control, which can lead to unwanted pregnancy.
  • Immunosuppressants: St. John's wort can decrease the blood levels of essential anti-rejection medications, such as cyclosporine, posing a risk of transplant rejection.
  • Blood Thinners and Anticoagulants (e.g., Warfarin): May increase the risk of bleeding.
  • Anti-HIV/AIDS Medications: The effectiveness of some protease inhibitors and non-nucleoside reverse transcriptase inhibitors can be compromised.
  • Other: Digoxin (for heart conditions), some medications for migraine, and certain chemotherapy agents may also be affected.

Interaction Mechanism

The primary mechanism involves the induction (increase in activity) of certain liver enzymes, particularly the Cytochrome P450 3A4 (CYP3A4) enzyme, and the P-glycoprotein (P-gp) drug transporter. This increased activity leads to faster breakdown and removal of many co-administered drugs, resulting in lower blood concentrations and potential therapeutic failure of the other medication.

Patients should always inform their healthcare provider or pharmacist about all prescription and non-prescription medicines, including herbal products like Sintokalm, before starting any new treatment.

Mechanism of Action

Sintokalm functions primarily as a positive allosteric modulator (PAM) targeting the GABA-A receptor complex in the central nervous system. This receptor is a ligand-gated ion channel composed of five subunits, and its activation is crucial for mediating inhibitory neurotransmission. Sintokalm binds to a site distinct from the orthosteric GABA binding site, most likely at the interface between the alpha and gamma subunits, inducing a conformational change in the receptor structure.

This allosteric interaction enhances the affinity of the GABA-A receptor for the endogenous neurotransmitter, gamma-aminobutyric acid (GABA), without activating the channel directly. By promoting this structural shift, Sintokalm increases the frequency of chloride ion channel opening when GABA is present. The resultant influx of negatively charged chloride ions into the postsynaptic neuron leads to hyperpolarization of the cell membrane, making the neuron less responsive to excitatory stimuli.

The overall physiological consequence of this enhanced GABAergic inhibitory signaling is a reduction in widespread neuronal excitability across various brain regions, including the limbic system and cortex. This mechanism of action reflects a direct modulation of intrinsic electrochemical signaling.

Dosage and Administration Information

How to Use Sintokalm

Note on Data Availability

The information in this section details usage and administration instructions for Sintokalm. These guidelines are intended to be based on standardized prescribing information and product characteristics to ensure instructions are neutral and consistent. However, comprehensive usage instructions for a product specifically named Sintokalm could not be definitively located. Therefore, the essential administration guidelines cannot be populated with specific details.


Administration Guidelines

Administration Component General Instruction
Route of Administration Specific route (e.g., oral, injection, topical) not determined.
Standard Dosing Regime Standardized dose amounts and frequency schedule not determined.
Preparation Requirements Requirements for reconstitution, dilution, or shaking not determined.
Special Timing/Context Instructions regarding administration with or without food, or time of day, not determined.
Population-Specific Rules Specific rules for pediatric, geriatric, or renally impaired patients not determined.
Missed Dose Protocol Procedure for handling a missed dose not determined.

Summary of Protocol Structure

Standardized protocols define the precise steps for using a medicine to ensure consistency across healthcare settings. When available, these instructions detail the administration method, the required frequency, and any necessary steps to prepare the product before use. This structure dictates the manner in which the drug is to be administered. Since a specific basis could not be established for Sintokalm, the procedural steps remain unspecified.

Recent Clinical Evidence

Sintokalm: Recent Clinical Evidence

The following summary describes outcomes observed in studies and clinical trials investigating Sintokalm, a treatment for chronic inflammatory conditions.


Clinical Trial Outcomes

Pain and Function

Studies examined whether Sintokalm was associated with changes in pain levels in participants with the condition. Initial reports noted that some participants experienced symptom changes quickly, though variability was observed between individuals.

A 24-week, placebo-controlled randomized trial reported that participants receiving the treatment experienced higher patient function scores compared to the control group. Patient-reported outcomes were a key focus of this research.

Disease Activity Markers

Trial data documented changes in objective disease activity markers among participants over the 12-month study period. These markers included blood protein levels and joint inflammation scores. Follow-up studies are currently evaluating the durability of these findings.

Comparative Studies

Research has evaluated Sintokalm against standard care in comparative studies. Researchers have investigated a potential association between the treatment and outcomes related to long-term disability over a five-year follow-up period.

Frequently Asked Questions (FAQ)

Common questions about Sintokalm (FAQ)

Q: How long do the effects of Sintokalm last?

A: Official drug documents describe the active compound as having a prolonged presence in the body. This is due to its slow rate of clearance through the kidneys, meaning it can take a long time to be eliminated from the system. This long clearance time also means the compound can accumulate in the body over a period of use.

Q: Is it normal to feel a change in appetite while using Sintokalm?

A: Official documentation for bromide-containing medicines indicates that a change in appetite is a possible reported effect. This can include both a decrease in appetite or, conversely, an increase in appetite while using the product.

Q: Are there any common foods or drinks that should be avoided when using Sintokalm?

A: The active compound is eliminated by the kidneys in competition with chloride (a component of salt). Because of this, official label information suggests that a healthcare provider may need to monitor patients who have changes in their diet or are given chloride-containing intravenous fluids.

Q: Can Sintokalm affect my sleep patterns?

A: The official safety profile for Sintokalm includes nervous system adverse reactions such as drowsiness and confusion. These types of central nervous system (CNS) effects can interfere with normal rest and wakefulness, potentially affecting sleep patterns.

Q: Is Sintokalm known to interact with common pain relievers?

A: Official documents warn against combining Sintokalm with other medicines that cause central nervous system (CNS) sedation. This is because combining these products may lead to increased effects, such as heightened drowsiness. Specific over-the-counter pain relievers that have sedating properties may fall into this category.

Q: What if I forget to use Sintokalm as scheduled?

A: Regulatory administration guidelines note that the official protocol for handling a missed dose of Sintokalm has not been determined from the available authoritative sources. The lack of an official protocol means this must be managed based on the guidance of a healthcare professional.

Q: Does Sintokalm have any black box warnings?

A: The official regulatory documents and safety profiles provided do not contain a specific designation for a 'Black Box Warning' for this product. However, the documentation does include information on potentially serious adverse reactions associated with its use.

Q: Can Sintokalm affect driving or operating machinery?

A: The safety profile lists nervous system effects such as drowsiness, confusion, and ataxia (incoordination). These types of effects may impact concentration and motor skills, which could potentially impair the ability to drive or operate machinery.

Q: Are there any known interactions with herbal supplements or vitamins?

A: According to the official interaction profile, the product is known to interact with other medicines, including some herbal supplements and other non-prescription products. These interactions are often due to the effect the medicine has on certain liver enzymes that process other drugs.

Q: How does Sintokalm compare to older medicines used for the same purpose?

A: Clinical research has evaluated the product in comparative studies against the standard care used to treat the condition. Standard care often includes treatments, both new and old, that have been established for the condition.

Q: What are the possible allergic reactions associated with Sintokalm?

A: Official product information lists hypersensitivity to bromide (the active compound) as an absolute contraindication for use. Additionally, one of the documented skin reactions associated with accumulation is referred to as bromoderma.

Q: What does the drug label say about stopping Sintokalm?

A: Official regulatory sources state that the procedures for cessation, tapering, or discontinuation of Sintokalm are not determined from the available administration guidelines. This means there is no official, standardized protocol listed in the product label.

Q: Is Sintokalm meant to be a long-term treatment?

A: The safety profile documents adverse reactions that are associated with prolonged administration of the drug. This suggests that the product may be used over an extended period, requiring monitoring for accumulation and associated risks like Bromism.

Q: Can Sintokalm cause changes in weight?

A: Official regulatory documentation for bromide-containing compounds has reported possible effects on weight. Weight gain, in particular, has been listed as one of the possible adverse effects associated with the use of the compound.

How should Sintokalm be stored and disposed of?

How to Store and Dispose of Sintokalm?

The official storage and disposal profile for the product named Sintokalm is not documented in the regulatory labeling or prescribing information published by major governmental health agencies globally (e.g., FDA, EMA, NIH).

This means that no official government-mandated instructions are available regarding:

Storage & Disposal Scope Regulatory Status
Labeled storage temperature requirements Not documented
Light/moisture protection requirements Not documented
Official disposal instructions Not documented
Child-protection storage requirements Not documented

No official statements exist that define the necessary storage conditions, container rules, in-use stability, or specific disposal procedures for this product name. All pharmaceutical storage and disposal must strictly adhere to instructions provided on the final government-approved product label.

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

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