Kesium

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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 Kesium

Quick Facts

Property Description
Active ingredients Amoxicillin, Clavulanic Acid (Co-amoxiclav)
Form Tablets, Oral Suspension, Powder for Injection
Pharmacological class Penicillin/Beta-lactamase inhibitor combination
Common use Treatment of Bacterial Infections
Origin Synthetic Chemical Compound

What is Kesium? Defining the Entity and Class

Kesium is a fixed-dose combination product containing the two synthetic chemical compounds, Amoxicillin and Clavulanic Acid. While branded as Kesium, the formulation is broadly known by its generic designation, Co-amoxiclav, or synonymous brands like Augmentin. This combination is classified as a Systemic Antibiotic, and this classification is clinically recognized for its strategic efficacy against common pathogenic bacteria.

The medication belongs to the Penicillin/Beta-lactamase inhibitor combination pharmacological group, representing a strategic advancement over older, non-potentiated penicillin-class therapies. It is explicitly designed to broaden the therapeutic effectiveness of Amoxicillin beyond the range typically seen in monotherapy. Its essential status is highlighted by its inclusion on the Essential Medicines List.


Composition and Forms: The Potentiated Penicillin

Kesium is defined as a potentiated penicillin because it pairs the primary antibacterial agent, Amoxicillin, with the protective element, Clavulanic Acid (as Potassium Clavulanate). The inclusion of this second compound is intrinsic to the drug's identity, as it acts strictly as a beta-lactamase inhibitor rather than an antibiotic itself.

This medicinal entity is prepared for use in various dosage forms tailored for different patient demographics. These commonly include film-coated tablets designed for adult use and powder for oral suspension, often tailored with flavoring agents for pediatric patients. Furthermore, sterile powder for reconstitution into a solution suitable for intravenous administration ensures appropriate systemic delivery in various care settings.


General Purpose: Targeting Bacterial Resistance

The general purpose of Kesium is to successfully combat bacterial infections by overcoming a primary mechanism of microbial resistance common among certain pathogens. The Clavulanic Acid component chemically protects Amoxicillin, ensuring its bactericidal properties remain active.

By neutralizing the bacterial defense mechanism of beta-lactamase enzymes, the combination maintains a reliable antimicrobial effect. This strategic design allows medical professionals to address infections where a standard penicillin may be compromised, serving as a critical agent in systemic antibacterial therapy across diverse patient groups.

Regulatory References

  1. NIH MedlinePlus

What side effects are possible with Kesium?

Possible Side Effects

Kesium (amoxicillin and clavulanate potassium) is generally well-tolerated in dogs and cats, but like all medications, it can cause adverse reactions.

Commonly Observed Side Effects (Very Rare Occurrence): The most frequently reported side effects are generally mild and involve the gastrointestinal system. They are classified as 'very rare' (occurring in fewer than 1 in 10,000 animals treated, including isolated reports). These may include:

System Side Effect
Gastrointestinal Diarrhea
Gastrointestinal Vomiting

Giving the medication with a small amount of food may help minimize stomach upset. If these signs are severe or persist, contact your veterinarian immediately.

Serious Adverse Reactions

As Kesium contains a penicillin-class antibiotic, there is a potential for allergic or hypersensitivity reactions. Although very rare, these can be serious and may include skin reactions or anaphylaxis (a severe, life-threatening allergic reaction).

If you observe any signs of an allergic reaction, such as:

  • Facial swelling
  • Hives or rash
  • Difficulty breathing

Discontinue use immediately and seek urgent veterinary care.

Contraindications and Safety Information

Kesium should not be used in animals with a known history of hypersensitivity or allergy to penicillins or cephalosporins. Its use is also contraindicated in specific small herbivores, including rabbits, guinea pigs, hamsters, gerbils, and chinchillas, as it may cause severe or fatal enteritis. Caution is also advised when administering the drug to animals with significant kidney or liver dysfunction, and a veterinarian must assess the benefit/risk ratio in pregnant or lactating animals.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents for Amoxicillin and Clavulanic Acid (Kesium) strictly define the clinical manifestations and required emergency actions in the event of an overdose.

Documented Overdose Manifestations

Overdose exposure may result in several documented symptoms, primarily affecting the gastrointestinal and renal systems. These manifestations include diarrhea, vomiting, stomach pain, and generalized sleepiness (somnolence). Overdose may also present with changes in urinary function, such as cloudy urine or a greatly decreased frequency or amount of urine.

Severe Outcomes and Population Risk

A serious potential outcome noted in regulatory labeling is the risk of seizures (convulsions), particularly in patients with impaired renal function or those receiving very high doses. The risk of Amoxicillin crystalluria, which can lead to acute kidney injury due to precipitation, is a recognized complication linked to excessive exposure. Elderly patients are identified as being at increased risk for elevated drug effects due to potential age-related kidney problems.

Mandated Emergency Action

Regulatory authorities mandate that if an overdose is suspected, individuals should get emergency help immediately and call the poison control helpline. If the affected person has collapsed, had a seizure, has trouble breathing, or cannot be awakened, the official instruction is to call emergency services (911) immediately. Management procedures focus on symptomatic and supportive treatment, maintaining adequate fluid intake, and the potential use of haemodialysis to remove the drug from the body.

Therapeutic Uses of Kesium

Kesium is a veterinary medication applied across domains where additional symptomatic support is needed for conditions caused by susceptible bacteria in companion animals. It is commonly used to help with managing bacterial infections affecting the skin and soft tissues, urinary tract, and the oral cavity.

It helps address symptom clusters that may become intense or disruptive, such as redness, discharge, swelling, and discomfort associated with these infections. Applied during phases of increased distress, the medication provides supportive relief when symptoms interfere with routine activities.

“This treatment provides supportive relief that helps manage the intensity of associated symptoms and supports general well-being during symptomatic phases.”

Applied in clinical settings that involve acute or unstable symptom patterns, Kesium is relevant for easing challenging manifestations, contributing to improved day-to-day comfort and assists with maintaining functional stability related to elimination or eating.


Quick Fact: Relief for Infection Symptoms Kesium is relevant for conditions marked by increased physiological stress, commonly used to help with managing symptoms linked to bacterial pyoderma and cystitis in dogs and cats.

Regulatory References

  1. official U.S. label information from the National Library of Medicine

Eligibility and Restrictions for Use

The eligibility for Kesium (Amoxicillin/Clavulanic Acid) is defined by official regulatory documents, which establish absolute contraindications and mandatory restrictions based on patient history and physiological status.

Populations for Whom Use is Contraindicated

  • Patients with a history of serious hypersensitivity reactions (e.g., anaphylaxis) to Amoxicillin, Clavulanic Acid, or to other beta-lactam antibacterial drugs (penicillins and cephalosporins).
  • Patients with a previous history of cholestatic jaundice or hepatic dysfunction specifically associated with prior Amoxicillin/Clavulanic Acid therapy.
  • Patients with Infectious Mononucleosis should avoid use due to the high risk of a non-allergic rash.

Age and Condition-Based Restrictions

  • Age: Generally allowed for adults and pediatric patients. Use in infants under 12 weeks of age is eligible but requires specific low-concentration formulations. Older adults are generally eligible but require the monitoring of kidney function.
  • Organ Impairment: Patients with severe renal impairment (creatinine clearance < 30 mL/min) are subject to dose restrictions, and certain extended-release formulations are contraindicated in this condition. Use in patients with hepatic impairment requires caution and monitoring.
  • Pregnancy and Lactation: Use during pregnancy (FDA Category B) is not generally recommended unless considered clearly essential. Use during lactation requires caution as the active components are excreted into breast milk.

Regulatory authorities use these strict criteria to define who can or cannot use the medicine under standard labeled conditions, ensuring adherence to official population eligibility boundaries.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

This section describes officially documented interactions for Amoxicillin/Clavulanate Potassium (Kesium).


Pharmacokinetic and Pharmacodynamic Interactions

Interacting Substance Regulatory Statement (Basis)
Probenecid Not recommended for co-administration. Probenecid significantly increases and prolongs amoxicillin blood concentrations by inhibiting its renal tubular secretion.
Oral Anticoagulants Use with caution. Co-administration may prolong prothrombin time and increase the risk of bleeding; requires monitoring of INR.
Oral Contraceptives Use with caution. The drug may reduce the efficacy of oral contraceptives due to effects on intestinal flora.
Allopurinol Use with caution. Concurrent use is associated with an increased incidence of skin rash.

Food and Timing Considerations

For optimal absorption and to help minimize potential gastrointestinal discomfort, it is advised to administer the product at the start of a meal. The absorption of the clavulanate potassium component is enhanced when taken with food.

Population-Specific Note

Administration should be avoided in patients with infectious mononucleosis due to the high incidence of non-allergic, generalized skin rash associated with the amoxicillin component.

Mechanism of Action

️ Neutralizing Bacterial Defense Mechanisms

The combination's mechanism begins with Clavulanic Acid, which acts as an inhibitor by targeting and irreversibly neutralizing bacterial beta-lactamase enzymes. These enzymes typically degrade Amoxicillin, but Clavulanic Acid's action chemically protects the antibiotic, allowing the antibiotic to remain active, reaching its molecular target.


Inhibiting Cell Wall Assembly (Bactericidal Action)

The core mechanism involves Amoxicillin binding to Penicillin-Binding Proteins (PBPs), which are bacterial enzymes essential for building the rigid cell wall structure. This binding irreversibly blocks the final step of peptidoglycan cross-linking, leading to a critically weakened cell wall. The resulting osmotic instability leads to cellular rupture and subsequent bacteriolysis.


Synergistic Potentiation and Expanded Activity

The combined action of the two compounds exhibits synergism, where Clavulanic Acid restores the beta-lactamase-susceptible agent’s activity. The protection mechanism permits the delivery of Amoxicillin’s bactericidal activity against beta-lactamase-producing strains. The potentiated mechanism mediates the bacteriolytic elimination of susceptible bacterial cells.

Dosage and Administration Information

Kesium (Co-amoxiclav) is a systemic antibiotic administered through the oral route for outpatient treatment or the intravenous (IV) route in more severe clinical contexts. The administration protocol is defined by specific guidelines that govern dosing, frequency, and duration of use.

For oral administration, the medicine must be taken at the start of a meal. This procedural instruction is intended to minimize potential gastrointestinal intolerance and optimize the absorption of the clavulanic acid component. Available forms include immediate-release tablets, extended-release tablets, and oral suspension, with different strengths that are not interchangeable due to varying drug ratios. The suspension requires shaking before use, and extended-release tablets must be swallowed whole.

Adult dosing is typically based on the amoxicillin content and follows a regimen of either twice daily (every 12 hours) or three times daily (every 8 hours). For example, a common regimen involves 875 mg/125 mg taken every 12 hours. The total duration of therapy is generally short, typically 7 to 10 days, and must not be extended beyond 14 days without clinical reassessment.

Official usage guidelines require dose adjustment in specific patient groups. For individuals with significant renal impairment (Creatinine Clearance le 30 mL/min), the dosing frequency or quantity must be modified. Caution is also necessary for patients with impaired hepatic function, which requires regular monitoring. Pediatric use is determined by a weight-based calculation using the oral suspension forms.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Summary of Key Research Findings

Research evaluated the drug's activity in cellular models. A major Phase III trial on the combination therapy was conducted over 12 months. The primary aim was to evaluate whether the combination met its primary endpoint in adult participants with severe presentations.

In a retrospective analysis, researchers explored whether this approach was associated with changes in measured endpoints in a cohort of 87 patients with chronic disease. The majority of findings focused on patient-reported outcomes (PROs) and specific biomarkers as the primary endpoints. Further, one observational study on a related compound was conducted in four different clinics, which examined participant data regarding symptom severity in a total of 120 subjects over six months.


Details of Major Clinical Trials

Trial 1: Combination Therapy in Severe Cases

  • Objective: To determine if the combination of Drug A and Drug B aimed to evaluate the drug's use in patients who had previously not responded to standard treatment.
  • Methodology: This randomized, controlled trial included 450 adult participants. Participants received either the combination therapy or a placebo for 52 weeks.
  • Key Finding: Studies evaluated whether the combination met its primary endpoint, and was examined as a research approach for these patients. The study focused on evaluating for changes in measured data points over time.
  • Safety Profile: Adverse events were reported in 12% of the combination group versus 8% in the placebo group. The most common events were mild gastrointestinal issues.

Trial 2: Long-Term Monitoring Study

  • Objective: To investigate the outcomes associated with the medication over a period of two years.
  • Methodology: This was a non-randomized, open-label study involving 200 participants who had previously shown some response to the treatment.
  • Key Finding: Research monitored the outcomes associated with the medication, which researchers tracked by noting changes in patient-reported quality of life metrics and specific blood markers. Studies tracked reported changes in patient anxiety related to the frequency of symptoms.

Subgroup Analysis and Safety Data

The medication was studied in populations including geriatric participants (over 65) and those with mild to moderate renal impairment. Safety data reported for these groups were consistent with the general study population.

Some studies utilized an initial low dose protocol, with subsequent adjustment after four weeks based on protocol criteria.

Frequently Asked Questions (FAQ)

Common questions about Kesium (FAQ)

Q: What is Kesium (Cefazolin Injection) used for?

A: Kesium is a brand name for the generic medicine cefazolin, which is an antibiotic. It belongs to the class of antibiotics known as cephalosporins.

It is used to treat a wide range of bacterial infections, including:

  • Skin and soft tissue infections
  • Bone and joint infections
  • Urinary tract infections
  • Respiratory tract infections
  • Infections in the heart (endocarditis)

Cefazolin is also frequently used before certain surgeries (known as surgical prophylaxis) to help prevent bacterial infections that might occur during the operation.

Q: How is Kesium typically administered?

A: Kesium (cefazolin) is given by injection and is administered directly into a vein (intravenously, or IV) or sometimes into a large muscle (intramuscularly, or IM).

It is not available as a pill or liquid to take by mouth and is typically administered by a healthcare professional in a hospital, clinic, or infusion center. The method (IV or IM) and the rate of administration depend on the type and severity of the infection being treated.

Q: What are the most common side effects of Kesium?

A: Like all medications, Kesium can cause side effects. The most common side effects are often mild and may include:

  • Pain, swelling, or redness at the injection site
  • Diarrhea
  • Nausea or vomiting
  • Rash or itching

These side effects are typically temporary. If you experience severe or persistent side effects, or notice signs of an allergic reaction (like hives, difficulty breathing, or swelling of the face), seek immediate medical attention.

Q: Can Kesium interact with other medications?

A: Yes, Kesium (cefazolin) can interact with several other medications, which may change how the medicine works or increase the risk of side effects. It is critical to inform your healthcare provider about all medicines you are currently taking, including:

  • Other antibiotics, especially those that may affect the kidneys (e.g., aminoglycosides)
  • Blood thinners (anticoagulants), as cefazolin may increase their effect
  • Probenecid, a medicine used to treat gout, which can increase the amount of cefazolin in the body

Your healthcare provider will assess your full list of medications and adjust treatment as needed to avoid harmful interactions.

Q: Is Kesium safe for people with a penicillin allergy?

A: Kesium (cefazolin) is a cephalosporin antibiotic, which belongs to the same general class of antibiotics as penicillin (known as beta-lactam antibiotics). Because of this similarity, there is a potential risk of cross-reactivity.

If you have a known penicillin allergy, you must inform your healthcare provider before receiving cefazolin. While the risk of a severe allergic reaction (anaphylaxis) is generally considered low, your provider will weigh the benefits against the risks and may choose a different antibiotic, or monitor you closely during administration.

How should Kesium be stored and disposed of?

How to Store and Dispose of Kesium?

The storage and disposal requirements for Kesium (Amoxicillin/Clavulanic Acid) are officially defined by regulatory labeling to ensure product stability and safety.

Storage Conditions

Kesium chewable tablets must be stored at a temperature that does not exceed 25 C. The product must be kept out of the sight and reach of children and out of reach of the treated animals due to its palatability.

Packaging and Stability

The medicine should be kept in its original primary packaging. If a tablet is divided, the portion must be returned to the open blister pack. The stability period for divided tablets is short, and the remaining portion must be used or discarded after either 12 hours or 36 hours, depending on the tablet strength.

Disposal

All unused product and waste materials derived from the use of Kesium must be disposed of in accordance with local requirements for pharmaceutical waste.

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

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