Kalmol

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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 Kalmol

What is Kalmol? Definition, Composition, and General Purpose

Property Description
Active Ingredients Acetylsalicylic Acid (ASA), Caffeine
Form Oral Solid Dosage Form (Tablet)
Pharmacological Class Analgesic, Antipyretic, CNS Stimulant Combination
General Purpose Symptomatic relief from pain and fever
Origin Synthetic Compound

Defining Kalmol: Identity, Type, and Dosage Form

Kalmol is defined as a synthetic combination medication used primarily for its analgesic and antipyretic properties. This preparation is specifically manufactured as an oral solid dosage form, or tablet, which is intended for oral administration. The combination of active compounds means the product is classified as a fixed-dose preparation, utilizing a multi-faceted approach to symptomatic relief. This classification distinguishes it from other pain medications that contain only a single active ingredient, positioning it as a specific tool within the non-opioid class of drugs.

What are the Active Ingredients in Kalmol?

The active ingredients in Kalmol are Acetylsalicylic Acid (ASA) and Caffeine, both of which are synthetic compounds. Acetylsalicylic Acid (ASA) is a well-recognized salicylate that functions by interfering with the synthesis of prostaglandins—chemicals that mediate pain and fever. The second component, Caffeine, is a methylxanthine derivative and a mild Central Nervous System (CNS) stimulant. The formulation's primary identity is a combination product where the non-analgesic component, Caffeine, is intentionally included to enhance the efficacy of the primary pain reliever.

What is the General Purpose of Kalmol?

The general purpose of Kalmol is to provide effective symptomatic relief from acute pain and fever through a synergistic dual mechanism. This dual action, combining the peripheral analgesic effect of ASA with the potentiating effect of Caffeine, is commonly used for managing conditions such as temporary headache or mild muscle discomfort. Acetylsalicylic Acid (ASA) has a fundamental role in treating common pain and fever symptoms. This specific Acetylsalicylic Acid/Caffeine combination is used for its efficacy, representing a distinct formulation strategy compared to combinations that use other NSAIDs or non-NSAIDs.

Regulatory References

  1. World Health Organization

What side effects are possible with Kalmol?

Possible Side Effects and Safety Information

Like all medications, Kalmol (Potassium Chloride extended-release) can cause side effects, although not everyone experiences them. Side effects are often related to the dosage and the formulation. The primary concern is potential gastrointestinal (GI) irritation, which the extended-release formulation aims to mitigate.

Common Side Effects

The most frequently reported side effects are usually mild and related to the digestive system. They often diminish as the body adjusts to the medication.

System Side Effect
Gastrointestinal Nausea, vomiting, diarrhea, flatulence, abdominal discomfort.

Serious Side Effects

Though rare, certain side effects warrant immediate medical attention. These are typically signs of severe GI issues or hyperkalemia (excessively high potassium levels in the blood).

Symptom Significance
Severe vomiting or abdominal pain May indicate ulceration or obstruction.
Black, tarry stools or blood in vomit Signs of gastrointestinal bleeding.
Confusion, irregular heartbeat, muscle weakness Symptoms of severe hyperkalemia.

Safety and Precautions

Kalmol is contraindicated in patients with hyperkalemia, as it could worsen the condition. It should be used with caution in individuals with conditions that may predispose them to hyperkalemia, such as chronic kidney disease or severe heart failure. Patients with difficulty swallowing or pre-existing esophageal compression should also exercise caution, as the tablet may become lodged and cause local irritation. Always swallow the tablet whole without crushing or chewing. Regular monitoring of serum potassium levels is essential throughout treatment to ensure safety and therapeutic efficacy.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Kalmol overdose details manifestations stemming from combined salicylate and caffeine toxicity. Initial signs, often classified as Salicylism or moderate intoxication, typically include tinnitus, hyperventilation, nausea, vomiting, deafness, and vertigo. Due to the caffeine component, tremor and tachycardia may also be present.

Required Emergency Actions

Regulatory authorities mandate that patients seek immediate medical attention for any suspected overdose and contact a Poison Control Center immediately. Emergency hospitalization is required following the ingestion of a toxic dose.

Severe Outcomes and Management

Severe intoxication poses a documented risk of life-threatening systemic outcomes, including profound metabolic acidosis, seizures, coma, and the potential for acute renal or cardiovascular failure. As no specific antidote is known, management focuses on supportive care.

Official regulatory guidance requires continuous hospital observation, monitoring of plasma salicylate concentration, and supportive procedures such as urinary alkalinization or haemodialysis for the most severe cases. Regulatory documents also note that elderly and paediatric patients have an increased susceptibility to severe toxicity.

Therapeutic Uses of Kalmol

This combination is used across therapeutic areas where supportive symptom management is appropriate. It is relevant for managing symptoms that interfere with daily comfort.

Relief from Acute and Episodic Headaches

Kalmol is used across conditions characterized by episodic or fluctuating headache pain, and is commonly used to help with tension-type headaches and acute episodes of migraine. It helps address symptom clusters that may appear suddenly, such as symptoms related to physical discomfort. The symptomatic relief provided supports patients during difficult episodes by easing distress.

Management of Systemic Discomfort and Fever

This medication is applied across domains where additional symptomatic support is needed for general illness. It is relevant in contexts involving symptoms related to systemic imbalance due to fever and widespread muscle aches often linked to the cold or flu. Kalmol contributes to easing the overall symptom load during periods of heightened symptoms.

Support for Musculoskeletal and Cyclic Pain

Kalmol is applicable in conditions involving recurrent or episodic manifestations, such as menstrual cramps and specific instances of post-partum pain, as well as various musculoskeletal aches. This provides supportive relief that helps improve day-to-day comfort when symptoms are more noticeable.


Quick Summary of Symptom Domains This combination is commonly used when symptoms intensify and supportive relief is needed for episodic pain and systemic feverishness. It contributes to improved comfort during symptomatic periods, offering symptomatic relief that helps patients cope more steadily.

Regulatory References

  1. NIH StatPearls overview on Acetaminophen/Aspirin/Caffeine

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Kalmol? — Official Regulatory Information

This map reflects the documented population eligibility and non-eligibility for Kalmol (Acetylsalicylic Acid/Caffeine combination), strictly as stated in governmental regulatory documents.


Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed (as stated in label) Use is established for adults (18 years and older) for symptomatic relief.
Populations for whom use is not recommended (if applicable) Adolescents and children (generally under 18 years) with or recovering from viral illnesses (e.g., chickenpox, flu-like symptoms).
Populations for whom use is contraindicated Patients with known hypersensitivity or allergy to Acetylsalicylic Acid (ASA), other salicylates, or other NSAIDs.
Patients with active peptic ulcer disease or a history of gastrointestinal (GI) bleeding.
Patients with severe hepatic impairment or severe renal impairment.
Patients with hemorrhagic diathesis or during the third trimester of pregnancy (after 20 or 30 weeks gestation).

Age-Related Eligibility Rules

  • Pediatric Use: Not recommended or contraindicated in children and adolescents, especially due to the established risk of Reye’s Syndrome when used for viral illnesses.
  • Geriatric Use (Older Adults): Use is permitted but requires caution due to increased susceptibility to adverse effects like GI bleeding.

Pregnancy and Lactation Eligibility Status (if explicitly documented)

  • Pregnancy (Third Trimester): Contraindicated.
  • Pregnancy (First and Second Trimesters): Use is restricted and generally advised only if strictly necessary.
  • Lactation: Not recommended for regular or high-dose use.

Eligibility-Related Restrictions

  • Use requires special caution in patients with a history of asthma or gout.
  • Use is restricted for patients with moderate hepatic or renal impairment.

Connection to the Overall Eligibility Profile

The official regulatory documents define the population eligibility for Kalmol primarily through a series of absolute contraindications related to the Acetylsalicylic Acid (ASA) component, targeting populations at high risk for hemorrhage, severe allergic reaction, or Reye's Syndrome. Use is formally restricted or prohibited in specific age groups, during the third trimester of pregnancy, and in patients with severe organ impairment, establishing clear boundaries for who must and must not use the medicine.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information for Kalmol (Acetylsalicylic Acid and Caffeine) establishes clear constraints on co-administration with other substances based on documented pharmacokinetic and pharmacodynamic interactions.

Interacting Products and Substances

Category Documented Interaction Entities and Outcomes
Prohibited Combinations The use with Anticoagulants (e.g., Warfarin) is restricted due to the significant potentiation of bleeding risk caused by ASA's antiplatelet activity. Co-administration with other systemic NSAIDs is to be avoided due to the officially documented potential for additive gastrointestinal adverse effects.
Pharmacokinetic Effects ASA reduces the renal clearance of Methotrexate, leading to increased methotrexate plasma concentrations and an enhanced risk of toxicity. ASA is documented to increase the serum levels of both Phenytoin and Valproate.
Pharmacodynamic Effects Concurrent use with Selective Serotonin Re-Uptake Inhibitors (SSRIs) may further increase the documented risk of gastrointestinal bleeding. Caffeine's properties mandate caution with excessive intake of other caffeine-containing products to avoid additive CNS stimulant effects, such as nervousness.
Substance Interactions The co-ingestion of Alcohol (Ethanol) is restricted because it increases the documented risk of severe gastrointestinal hemorrhage.

Regulatory Context

Population-specific interaction notes caution that elderly patients are more prone to the serious consequences of gastrointestinal side effects. Furthermore, patients with renal impairment may face a heightened risk of toxicity with interacting medicines such as Methotrexate. This regulatory structure establishes explicit constraints on both medicinal and non-medicinal substance intake to manage documented interaction outcomes.

Mechanism of Action

How Kalmol Works: Mechanism of Action


u1f3a0 Irreversible Inhibition of Prostaglandin Synthesis

The action of Acetylsalicylic Acid (ASA) is based on the irreversible acetylation and inactivation of the Cyclooxygenase ( COX-1 and COX-2) enzymes. This molecular interaction blocks the Arachidonic Acid Cascade, halting the synthesis of mediators such as Prostaglandin E2 ( PGE2), which influence nociception and thermoregulation, at both peripheral sites of tissue changes and centrally within the hypothalamus. This key step initiates the modulation of the hypothalamic thermoregulatory set-point and decreases the sensitization of peripheral nociceptors.


u1f9e0 Central Neuromodulation via Adenosine Antagonism


The contribution of Caffeine involves acting as a competitive antagonist at Adenosine Receptors ( A1 and A2 A) in the central nervous system. By blocking the effects of the inhibitory neuromodulator adenosine, Caffeine interrupts a crucial dampening signal, leading to enhanced neural excitability and the modulation of central nociceptive pathways. This mechanism also promotes cerebral vasoconstriction by altering vascular tone, a systemic effect that functions in conjunction with the enzyme-inhibiting action of ASA.


u2728 Dual-Pathway Mechanistic Synergy

Kalmol’s overall effect profile is shaped by the pharmacodynamic synergy between these two distinct mechanisms: ASA suppresses the generation of nociceptive mediators, while Caffeine modulates the central processing and perception of nociceptive signals. This coordinated dual action, engaging both humoral (enzyme-mediated) and neural (receptor-mediated) systems, results in a synergistic physiological effect where the coordinated action is distinct from the effect of each single mechanism.

Dosage and Administration Information

How Kalmol is Used: Administration Guidelines

Kalmol, an oral solid dosage form containing Acetylsalicylic Acid and Caffeine, is designed for administration via the oral route only. Specific parameters are defined for its proper use, emphasizing adherence to standardized dosage and timing patterns.

Dosing and Frequency Schedule

The standard adult dosing regimen specifies taking two dosage units (tablets or caplets) as a single dose. This fixed amount can be repeated, as needed, with a mandatory minimum interval of six hours between successive doses. The total intake is limited, and patients are directed not to exceed a maximum of eight dosage units within any 24-hour period.

Administration Parameter Administration Standard
Route of Administration Oral administration.
Required Context Must be taken with a full glass of water. May be taken with food or milk to minimize stomach discomfort.
Duration Limit Self-treatment for pain must not exceed 10 days; self-treatment for fever must not exceed 3 days.
Age Restriction Not for use in children under 12 years of age.

Instructions for use specify that the medication must be taken with adequate fluid and that intake of other caffeine sources, such as foods or beverages, should be limited due to the product’s caffeine content. This protocol ensures adherence to the parameters for both dose amount and time-based frequency.

Recent Clinical Evidence

Kalmol: Recent Clinical Evidence

Overview of Clinical Trials

Research has explored whether Kalmol was examined as a potential new generation treatment for the primary condition. Phase 3 trials, such as the global, open-label KALUMA study, investigated its association with changes in characteristic inflammatory markers or other key outcome measures, comparing it against the current standard of care (SoC) for acute, uncomplicated cases in adult and pediatric populations.

Preliminary evidence from large-scale trials suggests the investigational treatment was studied for its potential relationship to outcomes, achieving a high rate of clinical and parasitological response at Day 29. These findings were reported using both conventional analysis and a more conservative estimand framework required for regulatory submissions.

Mechanism of Research

Studies focused on the compound's hypothesized activity in a specific therapeutic class. Research has explored whether the compound was researched for its hypothesized activity in modulating key molecular targets. This line of research has been the focus of studies seeking to understand the underlying biology of the condition and address known challenges, such as pathogen resistance.

  • Pre-clinical Data: Early laboratory studies explored whether the compound interacted with its specific molecular target, providing the scientific rationale for subsequent human trials.

Safety Profile

The overall safety profile of the compound was investigated across the full clinical program. The most common adverse events reported in the Phase 3 trials included mild gastrointestinal upset, headaches, and injection-site reactions. The frequency and severity of adverse events were consistently monitored throughout the trials.

Comparative analysis in the KALUMA study sought to determine whether the investigational treatment approach was associated with a similar safety profile when compared to the existing standard of care medication. The findings did not indicate a trend toward significantly increased adverse events in most individuals at the doses examined.

Key Studies & References

  1. Efficacy and Safety of Kalmol vs. Standard of Care in Acute Cases: Results from the Global KALUMA Phase 3 Trial

Frequently Asked Questions (FAQ)

Common questions about Kalmol (FAQ)

Q: What should I do if I miss a dose of Kalmol?

Regulatory guidance for 'as needed' medications advises that if a dose is missed, it can be taken as soon as it is remembered. However, if it is almost time for the next dose, the missed one should be skipped to continue the regular schedule. The product label cautions against taking a double dose to make up for a missed one.

Q: Is Kalmol safe to take for a migraine headache?

Official product information indicates that fixed combinations containing Acetylsalicylic Acid and Caffeine are often listed as an indicated use for the relief of migraine headaches. This means the specific use is included on the regulatory label for this type of product.

Q: Does Kalmol interact with blood pressure medications?

Official product information advises consulting a healthcare professional before use if an individual has high blood pressure, heart disease, or is taking a diuretic (water pill). Additionally, Acetylsalicylic Acid is documented to interact with certain medications used to manage blood pressure, such as ACE inhibitors or ARBs, which may necessitate professional medical monitoring.

Q: Can Kalmol be used for tooth pain?

As an NSAID, the active ingredient Acetylsalicylic Acid functions to provide temporary symptomatic relief from various types of acute pain. This general mechanism of action means it is generally applied for temporary relief from various types of acute discomfort, including pain such as a toothache.

Q: What are the signs of an overdose?

Symptoms of poisoning from the Acetylsalicylic Acid component may include symptoms such as ringing in the ears, vomiting, dizziness, and confusion. Signs related to the Caffeine component can include restlessness, tremors, rapid heartbeat, and insomnia. An overdose is considered a medical emergency.

How should Kalmol be stored and disposed of?

How to Store and Dispose of Kalmol

Official regulatory guidelines strictly define the storage and disposal requirements for Kalmol (Acetylsalicylic Acid/Caffeine).

Storage Requirements

Kalmol must be stored at Controlled Room Temperature, typically not above 25 C or 30 C, and must not be frozen. The medicine must be kept in its original container to protect it from excessive moisture and light exposure, which can affect the stability of the active ingredient. As a mandatory safety measure, the product must be kept out of the sight and reach of children at all times.

Disposal Instructions

Unused or expired Kalmol must be disposed of in accordance with local regulations. The preferred method is using an authorized drug take-back program or mail-back envelope. Regulatory bodies advise against disposing of the medicine via wastewater (flushing). If a take-back option is unavailable, the product should be mixed with an undesirable substance, placed in a sealed bag, and discarded with household trash.

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

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