Calmox

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Calmox

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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 Calmox

Quick Facts: Calmox

Property Description
Active Ingredients Amoxicillin, Dicloxacillin
Form Capsules, tablets, oral suspension
Pharmacological Class beta-Lactam antibiotic
Common Use Fighting bacterial infections
Origin Semisynthetic

What Type of Medicine is Calmox and What is its Class?

Calmox is defined as a fixed-dose combination antibiotic that belongs to the beta-lactam antibiotic class, further categorized as a semisynthetic penicillin derived from the core penicillin structure. This medicine is intended for oral intake, commonly available as capsules, tablets, or an oral suspension. Amoxicillin is a fundamental, broad-spectrum antibiotic used to treat susceptible infections. As a unique combination, Calmox represents a differentiated pharmacological approach designed for systemic use, where both components are absorbed to act throughout the body.


Composition and General Purpose

Calmox contains two distinct active ingredients: Amoxicillin and Dicloxacillin. The inclusion of Dicloxacillin is vital, as it functions as a penicillinase-resistant penicillin, protecting Amoxicillin from degradation by beta-lactamase enzymes produced by certain resistant bacteria. This combination provides a robust, dual-action, bactericidal effect. This specific formulation is clinically recognized for its utility when both susceptible and certain resistant bacterial strains are implicated in an infection. The general purpose of Calmox is to deliver comprehensive, systemic antimicrobial treatment to fight and eliminate bacterial pathogens. Dicloxacillin possesses specific resistance properties, including efficacy against strains of Staphylococcus that produce the penicillinase enzyme. This characteristic is central to the drug's design to overcome common bacterial defense mechanisms, providing a strategically broadened antibacterial spectrum.

Regulatory References

  1. U.S. National Library of Medicine (NIH)
  2. NIH: Dicloxacillin Clinical Review

What side effects are possible with Calmox?

Possible Side Effects and Safety Information

The official safety profile for Calmox (Amoxicillin/Dicloxacillin), a penicillin-class antibiotic, is defined by regulatory documents that classify potential adverse reactions across several organ systems, with a primary focus on hypersensitivity and gastrointestinal events.


Frequency and System-Organ Classes

The most common adverse reactions (ge 1% incidence) officially reported, based primarily on the Amoxicillin component, include diarrhea, nausea, vomiting, and rash. Adverse effects are formally categorized by system, including Gastrointestinal (e.g., stomatitis), Dermatologic/Hypersensitivity (e.g., pruritus, urticaria), Hepatic (e.g., transient elevated liver enzymes), Hematologic, and Nervous System reactions.


Serious Adverse Reactions

Serious, occasionally fatal, hypersensitivity reactions such as anaphylactic shock have been reported with the penicillin class; a history of allergy to any penicillin or beta-lactam is an absolute contraindication. Other serious adverse events documented include Clostridium difficile-associated diarrhea (CDAD), which can occur up to two months or more following treatment cessation, and cholestatic hepatitis/jaundice.


Population and Duration-Related Safety

Official labeling defines specific safety considerations for certain groups. Patients with renal impairment are at an increased risk of neurotoxic reactions, including seizures, necessitating careful consideration. Furthermore, time-related safety patterns are noted, such as delayed allergic reactions that may appear weeks after initiation. The drug is also noted to reduce the efficacy of oral contraceptives.

Overdose and Emergency Response

The official regulatory profile for Calmox (Amoxicillin and Dicloxacillin) overdose focuses on documented clinical manifestations and the absolute need for immediate emergency medical care.

Overdose Manifestations and Severe Outcomes

An acute overdose is officially associated with gastrointestinal symptoms, including nausea, vomiting, and diarrhea. More significant documented signs involve the Central Nervous System, presenting as confusion, lethargy, and localized neurotoxic reactions such as muscle twitching.

The risk of life-threatening events, consistent with the penicillin class, includes anaphylactic shock and vascular collapse. Severe neurological toxicity, such as the onset of epileptiform seizures (convulsions), is explicitly documented, especially in patients with pre-existing impaired renal function. The physiological finding of amoxicillin crystalluria (crystal formation in the urine), leading to decreased urinary output, is a recognized complication.

Emergency Action and Management

Regulators mandate that any suspected overdose requires individuals to seek emergency medical attention immediately and contact a Poison Help line or emergency services. Management is officially described as symptomatic and supportive treatment, with immediate discontinuation of the drug. There is no specific antidote documented in the official labeling, and supportive measures include maintaining adequate fluid intake to address crystalluria and continuous monitoring for severe reactions.

Therapeutic Uses of Calmox

Calmox: Main Uses and Symptomatic Benefits

Calmox is relevant in clinical settings that involve acute or unstable symptom patterns, offering supportive symptom management. This approach aligns with the established therapeutic uses for its drug class, which are typically indicated for conditions involving anxiety, seizures, and insomnia. The medication is applied across domains where additional symptomatic support is needed.


Managing Periods of Acute Symptomatic Discomfort

Calmox is generally used during phases when symptoms become more noticeable or intense, creating a noticeable physiological strain. It may help address symptom clusters that appear suddenly or fluctuate, and is relevant when supportive symptom management is appropriate. It is applied in situations involving certain distressing symptoms, providing support that helps ease the overall symptom burden.

Addressing Symptoms Linked to Functional Strain

The medication is commonly used across conditions characterized by periods of heightened symptoms and is applied in contexts marked by increased discomfort or tension. The application of Calmox is associated with maintaining functional stability when symptoms interfere with routine activities, and may help patients cope more steadily with symptom fluctuations or acute episodes.


Quick Fact: Support in managing Acute Discomfort

Eligibility and Restrictions for Use

Who Can and Cannot Use Calmox?

Eligibility for using Calmox (Amoxicillin/Dicloxacillin) is strictly defined by regulatory documents, focusing on patient population and pre-existing conditions.

Absolute Non-Eligibility (Contraindications)

Classification Population/Condition
Contraindicated Individuals with a known history of serious hypersensitivity (severe allergy) to Amoxicillin, Dicloxacillin, or any other beta-lactam antibiotic (penicillins, cephalosporins).
Contraindicated Patients with Infectious Mononucleosis should not use this medicine.
Contraindicated Individuals with a history of cholestatic jaundice or liver dysfunction specifically associated with previous use of these antibiotics.

Conditional Use and Restrictions

Age-Based Eligibility: Use is established for Adults and Pediatric Patients weighing 40 kg or more. For children under 40 kg, dose is calculated by weight. Neonates and infants le 3 months require modified dosing due to immature renal function.

Comorbidity Restrictions: Patients with severe renal impairment (CrCl < 30 mL/min) are subject to restricted use or not recommended for certain formulations due to the drug’s renal clearance.

Pregnancy and Lactation: Calmox is permitted during pregnancy only if clearly needed (Category B). Caution should be exercised when administered to nursing mothers, as the drug is excreted in human milk and may cause infant sensitization.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The active ingredient in Calmox, Amoxicillin, has documented interactions with several categories of medicinal products, which may alter its concentration or the effect of the co-administered drug. Official regulatory information identifies the following clinically significant interactions:

Interacting Product Category Potential Effect and Constraint
Oral Anticoagulants (e.g., Warfarin) Concomitant use may prolong prothrombin time, increasing the risk of bleeding. Close monitoring of the International Normalized Ratio (INR) is necessary, and dose adjustments may be required.
Uricosuric Agents (e.g., Probenecid) Co-administration is not recommended, as Probenecid decreases the renal tubular secretion of Amoxicillin, which can result in increased and prolonged blood levels of the antibiotic component.
Allopurinol Concurrent use increases the incidence of skin rash in patients receiving both medications.
Oral Contraceptives Amoxicillin may affect the intestinal flora, potentially leading to lower estrogen reabsorption and reduced effectiveness of combined oral estrogen/progesterone contraceptives. Patients should be advised about this potential risk.
Tetracycline Antibiotics Chloramphenicol, macrolides, sulfonamides, and tetracyclines may interfere with the bactericidal effects of penicillin-class antibiotics, though the clinical significance is not fully established.

Co-administration with Methotrexate is also a documented interaction, as it may increase the concentration of Methotrexate, requiring careful patient monitoring for toxicity.

Mechanism of Action

Dual-Action Control of Central Nervous System Signals

Calmox acts on its primary targets: the mathbfGABAA receptor (to enhance inhibition) and voltage-sensitive Na^+ channels (to block excitation). This dual mechanistic approach results in a generalized dampening of neuronal activity, influencing the activity of central arousal pathways.

Modulating Neuronal Hyperpolarization and Excitability Threshold

Calmox’s mechanism directly influences the electrophysiological properties of the neuron. By increasing chloride ion mathbf(Cl^-) influx (hyperpolarization) and decreasing sodium ion mathbf(Na^+) influx (reduced depolarization), the drug stabilizes the neuronal membrane at a less excitable state. This cellular effect underlies the drug's mechanism to raise the threshold for neuronal firing and limit the propagation of excessive electrical signaling.

Mechanistic Cascade for Motor Signaling Modulation

The reduction in CNS excitability modulates signal propagation through motor and arousal pathways leading to the periphery. The drug's mechanism slows the propagation of signals from the CNS to the skeletal muscles. This systemic modification of neural outflow contributes to the resulting physiological consequence of reduced efferent signaling to skeletal musculature, altering muscle tone.

Dosage and Administration Information

How to Use Calmox: Administration Guidelines

Calmox, a combination of Amoxicillin and Dicloxacillin, is strictly intended for oral administration and is used according to a time-critical, fixed-duration protocol.

General Usage and Scheduling

Administration is structured to maintain effective antibiotic levels, requiring the total daily amount to be divided into multiple doses and taken at intervals, typically every 6 to 8 hours. The required treatment duration is a fixed course, often lasting 7 to 14 days, and must be completed entirely, even if the user experiences improvement after a few days.

Contextual Dosing Instructions

The Dicloxacillin component is best absorbed when taken on an empty stomach, specifically one hour before or two hours after a meal. To ensure proper delivery, the oral dose should be swallowed with at least 120 mL (four fluid ounces) of water, and individuals are directed not to lie down immediately after taking the medicine.

Dosage and Special Populations

Standard adult doses for each component typically range from 250 mg to 500 mg per dose, although this varies by the specific product and clinical scenario. For individuals with renal impairment, dose adjustments are typically required, usually involving a reduction of the dose or an extension of the dosing interval (e.g., to every 8 or 12 hours) based on objective measures of kidney function. Pediatric dosing is determined by weight, requiring precise calculation.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Calmox

The research landscape for the Amoxicillin-Dicloxacillin combination is primarily characterized by studies examining the components' properties and the evidence base for beta-lactam fixed-dose combination (FDC) antibiotics generally. The evidence is organized around whether the combination has been studied for clearing susceptible bacteria and those that produce penicillinase.

Evidence for Use in Bacterial Infections with Penicillinase Risk

The combination was studied for its use in bacterial infections, particularly those affecting areas like the skin, soft tissue, and respiratory tract, where the infection may involve bacteria known to produce the penicillinase enzyme.

Studies explored the activity of the combination using in vitro susceptibility studies conducted in the laboratory, which examined the clearance of specific bacterial pathogens like Staphylococcus aureus strains. Randomized Controlled Trials (RCTs) have also examined this combination, or similar fixed-dose beta-lactam combinations, often comparing them to other established antibiotic regimens. These trials were typically conducted on adults and examined outcomes related to clinical cure rates—the measurement of symptom change during the study period.

Studies described patterns observed in the treatment groups, including measurements of symptom evolution and reported pathogen change over the short treatment period. However, the available data for this exact fixed-dose combination is limited in terms of modern, large-scale studies reported in major scientific literature. Research describes that the findings may be interpreted in the context of the individual components' established activities, rather than evidence supporting an absolute advantage for the specific FDC.

Research Design and Study Comparisons

Research design often explored comparisons against the use of the single components or other combination therapies, where available.

Research examined treatment success using endpoints like pathogen eradication and treatment failure rates. Some trials were observed in settings where the FDC was compared to a placebo or to a single-agent antibiotic. The findings suggested that a distinction for the two-drug beta-lactam combination was not consistently described in studies comparing it to other antibiotic strategies. For instance, studies on similar beta-lactam FDCs sometimes reported patterns of clinical resolution, but comparative evidence is lacking to show a clear difference when compared to using the individual components alone.

Research describes that studies often compare combining two beta-lactam antibiotics with utilizing a single antibiotic choice or a beta-lactam plus a beta-lactamase inhibitor.

Key Studies & References

  1. Fixed‐dose combination antibiotics: The search for evidence using the example of ampicillin–cloxacillin (Review of FDCs and limited evidence)
  2. Dicloxacillin - LiverTox - NCBI Bookshelf (General information on Dicloxacillin and toxicity patterns)
  3. Recommendations of Expert Committee Meeting held on 6.03.2014 - CDSCO (Regulatory review of Amoxicillin + Dicloxacillin FDC and need for superiority data)

Frequently Asked Questions (FAQ)

Common questions about Calmox (FAQ)


Q: Can I take Calmox with alcohol?

Official product information for Calmox generally states that concurrent use with alcohol is not recommended or use with alcohol is typically discouraged. This information is included because taking this medication with alcohol may lead to an increase in adverse effects, such as enhanced drowsiness or central nervous system effects. Specific guidance on alcohol is detailed in the official patient information leaflet.


Q: Is Calmox recommended during pregnancy?

Regulatory labeling addresses the use of Calmox during pregnancy and includes a specific Pregnancy Category or provides guidance on whether use is recommended or should be avoided. This information is based on available data regarding potential effects. The complete product information details the specific regulatory guidance for use during pregnancy.


Q: Does Calmox make you sleepy or drowsy?

The official product information, specifically the section detailing adverse reactions, often lists nervous system effects such as drowsiness, dizziness, or somnolence (sleepiness). Due to the possibility of these effects, the product information may include warnings about performing activities that require alertness, such as driving or operating machinery.


Q: Is Calmox safe for children to use?

Calmox is only authorized for use in the specific pediatric age groups and conditions that are clearly detailed in the approved product information. The label specifies the authorized ages and dosing recommendations for children. If the drug is not explicitly labeled for a child's age group, that use is not authorized on the official label.


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

Instructions for managing a missed dose of Calmox are provided in the approved patient information leaflet under the Dosage and Administration section. Typically, this guidance will instruct you on whether to take the dose as soon as you remember or to skip the missed dose entirely. The product information states what to do if a dose is missed, which may include not taking two doses at once.


Q: Is it safe to take Calmox long-term?

Official product information for Calmox specifies the maximum recommended duration of treatment for the drug's approved indications. Safety and effectiveness data regarding use beyond the specified treatment duration is not typically included in the standard approved label. The product information should be consulted for the duration authorized by regulators.

How should Calmox be stored and disposed of?

Storage and Disposal of Calmox

The storage and disposal of Calmox (Amoxicillin/Dicloxacillin) must comply strictly with conditions specified in regulatory labeling to maintain stability.

Storage Requirements

Condition Requirement
Temperature Store dry product at Controlled Room Temperature (15°C to 30°C).
Protection Keep the medicine in its tightly closed, light-resistant container and away from excessive heat and moisture.
Suspension Limit The reconstituted oral suspension must not be frozen and is stable for 14 days after mixing, whether refrigerated or at room temperature.
Child Safety All forms must be stored out of the sight and reach of children.

Disposal

Disposal of unused or expired product must follow local regulations. The medicine should not be disposed of in wastewater (sinks or toilets) as the Amoxicillin component is toxic to aquatic life. Unused portions should be mixed with an undesirable substance, sealed, and placed in the household trash, or returned to a drug take-back program if available.

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

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