Cazetin

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Cazetin

Treatment option: Infection, Oral Cavity

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 Cazetin

Quick Facts

Property Description
Active ingredient Nystatin (INN)
Form Oral suspension, tablets, lozenges, creams
Pharmacological class Polyene macrolide antifungal
Common use Addressing localized yeast and fungal infections
Origin Natural (fermentation-derived from Streptomyces noursei)

Cazetin: Defining the Antifungal Medication

Cazetin is a pharmaceutical preparation whose active ingredient is Nystatin, which is definitively classified as a polyene macrolide antifungal medicine. This classification is supported by pharmacological studies detailing its biosynthesis from the bacterium Streptomyces noursei, confirming its natural origin.

Nystatin holds a distinction as the first clinically useful polyene macrolide discovered and is included on the World Health Organization's List of Essential Medicines. This inclusion confirms the drug's established and foundational role in managing fungal infections globally.

This medication is primarily characterized by its minimal systemic absorption when administered via the oral or topical routes. This differentiating property ensures that its therapeutic activity is predominantly focused on the skin, mucosal surfaces, or the gastrointestinal tract, making it suitable for treating infections where systemic exposure must be avoided.


Composition, Forms, and General Therapeutic Purpose

Cazetin is typically provided as a single-ingredient product and is manufactured in several distinct dosage forms tailored for localized application, including oral suspension, tablets, lozenges (pastilles), cream, and ointment. The general therapeutic purpose of Cazetin is to resolve localized fungal infections by directly eliminating the causative pathogen in the affected area, particularly those belonging to the genus Candida.

This breadth of preparations allows the drug to address infections in specific niches; for instance, the lozenge form is designed to dissolve slowly in the mouth, maximizing local contact time for treating conditions like oropharyngeal candidiasis. This targeted delivery of the non-absorbed active substance is key to optimizing the drug's antifungal benefit.

Regulatory References

  1. WHO Model List of Essential Medicines - 23rd List (2023)
  2. Nystatin - LiverTox (NIH)

What side effects are possible with Cazetin?

Cazetin: Possible Side Effects and Safety Information

Cazetin (Nystatin) is primarily associated with localized adverse reactions due to its property of negligible systemic absorption from the gastrointestinal tract and skin, a fact confirmed by regulatory documents.


Adverse Reaction Scope

The most frequently documented adverse events relate to the gastrointestinal system and local application site. These are often classified as Uncommon or occasionally reported and include nausea, vomiting, diarrhea, gastrointestinal upset, and abdominal discomfort.

Local reactions are also common, involving oral irritation, sensitization, burning, and pain at the site of application.

Serious Adverse Reactions

Regulatory labeling notes the potential for rare but serious immune system disorders, including severe hypersensitivity reactions, angioedema (swelling of the face or throat), tachycardia (rapid heart rate), and bronchospasm. The severe mucocutaneous condition, Stevens-Johnson syndrome, has been reported very rarely.

Regulatory Safety Notes

  • Systemic Restriction: Cazetin is not to be used for the treatment of systemic fungal infections, which aligns with its minimal absorption profile.
  • Hypersensitivity: The preparation is contraindicated in patients with a history of hypersensitivity to Nystatin or any of its components.
  • Renal Impairment: Although systemic absorption is generally insignificant, regulatory information indicates that significant plasma concentrations of Nystatin may occasionally occur in patients with renal insufficiency receiving oral therapy.
  • Sensitization: If evidence of local irritation or sensitization develops during use, the official label indicates treatment should be discontinued.

The official safety information structures the understanding of risks by confirming that the minimal absorption primarily restricts adverse reactions to the gastrointestinal tract and the application site. The documented risks are therefore heavily clustered in these localized systems, with more serious, but rare, systemic risks being primarily related to immune-mediated hypersensitivity.

Overdose and Emergency Response

The official regulatory profile for Cazetin (Nystatin) overdose is fundamentally defined by the drug's negligible systemic absorption from the gastrointestinal tract. This characteristic supports the regulatory conclusion that no systemic toxicity is expected following accidental or excessive exposure, and consequently, no serious toxic effects have been documented in prescribing information.

Documented Manifestations

Manifestations of overdosage are confined to the gastrointestinal system. Symptoms reported in official documents, primarily following consumption of oral doses in excess of five million units daily, include nausea, vomiting, stomach pain, and generalized gastrointestinal upset. Management of overdosage is expected to be supportive, aimed at addressing these specific symptomatic presentations, as regulatory documents do not provide specific guidelines or mention a known antidote.

Emergency Actions

Regulator-mandated actions require immediate response. A poison control center or regional equivalent must be contacted immediately in the event of any suspected overdose. Urgent medical attention is required, necessitating a call to emergency services, if the affected individual exhibits severe signs such as collapse, a seizure, trouble breathing, or the inability to be awakened.

Therapeutic Uses of Cazetin

What Cazetin Treats: Main Uses and Benefits

Cazetin (Nystatin) is generally used for managing localized infections caused by the Candida yeast, which typically manifest on surface tissues. The medication is relevant for treating fungal infections of the mouth, throat, and gastrointestinal lining. This treatment is commonly used across conditions presenting with acute episodes of candidiasis, such as oral thrush, cutaneous skin infections, and non-esophageal gastrointestinal candidiasis.


Symptomatic Relief and Clinical Contexts

Cazetin helps address symptom clusters that may become intense or disruptive, specifically the pain, soreness, and white patches that interfere with daily functioning like eating or speaking, as well as the redness and intense itching associated with skin infections. The primary goal of this therapy is to help ease the overall symptom burden associated with these localized conditions. It is applied in clinical settings that involve acute or unstable symptom patterns, such as managing candidiasis following antibiotic use or in immunocompromised individuals. This treatment provides support that contributes to improved comfort during periods of heightened symptoms and may assist with preserving comfort and stability during symptomatic periods.


Quick Fact: Relief for Mucosal Discomfort
Cazetin is commonly used to help with symptoms related to physical discomfort and inflammatory or irritative states associated with fungal colonization of the mouth and throat.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Cazetin?

This section outlines the official population eligibility and non-eligibility rules for Cazetin (Nystatin), based on government regulatory documentation.


Populations for Whom Use is Established

Cazetin is approved for the treatment of localized fungal infections across all major age groups:

  • Adults and Children: Standard eligible populations.
  • Infants and Neonates: Use is established and approved from birth for treatment or prophylaxis of oral and intestinal candidiasis.
  • Older Adults (Geriatric): Generally eligible; no specific precautions or dosage adjustments are documented in official labeling.

Absolute Contraindications (Do Not Use)

Cazetin must not be used in the following populations or conditions, as defined by official regulatory documents:

  • Hypersensitivity: Patients with a documented history of allergy or hypersensitivity to Nystatin or any component of the formulation.
  • Systemic Mycoses: Patients with deep or systemic fungal infections, as the drug is not absorbed sufficiently to be effective in these cases.
  • Metabolic Disorders: Patients with certain rare hereditary metabolic disorders (e.g., fructose intolerance, glucose-galactose malabsorption) due to the presence of specific excipients in the oral formulation.

Conditional Use (Pregnancy and Lactation)

Use is restricted and requires professional evaluation:

  • Pregnancy: The medication should be given only if clearly needed and the potential benefits outweigh the risks.
  • Lactation: Caution must be exercised, as it is not known if Nystatin is excreted in human milk.

What should I know about interactions with other medicines?

Cazetin Interactions with other Medicines and Products

Official regulatory documents define the interaction profile of Cazetin (ezetimibe/statin) by focusing on substances that pose a risk of elevated statin exposure or additive muscle toxicity.

Contraindicated and Restricted Combinations

Specific medicines and classes are either prohibited or require strict dose limits due to the potential for severe adverse effects, primarily myopathy and rhabdomyolysis. These restrictions are often related to the statin component’s metabolism via the CYP450 enzyme system and the OATP1B1 transporter.

Interaction Type Examples of Interacting Agents
Absolute Contraindication Strong CYP3A4 inhibitors (e.g., Itraconazole), Gemfibrozil, Cyclosporine.
Use with Dose Restriction Amiodarone, Amlodipine, Diltiazem, Verapamil (for the statin component).

Pharmacokinetic Considerations

Co-administration with Cyclosporine significantly increases the plasma concentration (AUC) of both ezetimibe and the statin component. Bile acid sequestrants (e.g., Cholestyramine) decrease ezetimibe exposure by disrupting its absorption and enterohepatic recirculation. To manage this effect, official labeling requires a temporal separation of doses: Cazetin should be taken at least 2 hours before or 4 hours after a sequestrant. Large quantities of Grapefruit Juice should be avoided due to its potential to inhibit CYP3A4, thereby increasing statin levels. Additionally, lower maximum statin doses are often stipulated for Asian patients when used with interacting medicines, reflecting population-specific differences in drug exposure.

Mechanism of Action

Targeted Disruption of Fungal Cell Membranes

The core mechanism of Cazetin (Nystatin) is its highly specific physical interaction with ergosterol, a sterol component unique to the fungal plasma membrane. By binding to this target, the drug molecules aggregate and insert themselves, spontaneously forming transmembrane pores or channels. This initial, physical disruption compromises the integrity of the pathogen's structure, initiating a sequence that results in irreversible cellular damage.


️ Collapse of Fungal Homeostasis and Ion Balance

The formation of membrane pores permits the unregulated and massive efflux of vital intracellular components, including essential Potassium (K^+) ions and metabolites. This uncontrolled leakage disrupts the cell's electrochemical gradient and osmotic balance, leading directly to fungal cell lysis (death). This mechanism is inherently localized and fungicidal, with its action restricted to the local site where direct pathogen contact occurs due to the compound's minimal systemic absorption.

Dosage and Administration Information

Cazetin (Nystatin) is administered through oral, topical, or intravaginal routes, depending on the infection's location. As a non-systemically absorbed agent, its oral forms are provided as suspension, tablets, and lozenges.

The standard administration pattern for the oral suspension in adults is 400,000 to 600,000 units per dose, used four times daily (QID). Before a dose is measured, the liquid must be shaken well. To achieve maximum effect at the infection site, the dose is retained in the mouth, swished, gargled, or held for several minutes before being swallowed. For intestinal candidiasis, oral tablets are typically given at 500,000 to 1,000,000 units per dose, generally taken three times daily (TID).

For infants and neonates, the typical dose is 100,000 to 200,000 units given four times daily. To ensure localized contact time, feeding should be postponed for 5 to 10 minutes following administration. The treatment course typically continues for a minimum of 48 hours after clinical symptoms have disappeared to mitigate recurrence. If symptomatic improvement is not observed after 14 days of adherence, the patient's condition requires re-evaluation. Dosage adjustments are not specified for renal or hepatic impairment, reflecting the drug’s minimal systemic uptake.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Research Activity and Core Evaluation

Study investigators examined the drug's activity in laboratory models before clinical trials were initiated. Clinical trials provide data on the drug's activity in people with the condition.

Clinical studies, including Randomized Controlled Trials (RCTs), have evaluated whether there is an improvement in joint function and a reduction in symptoms for people with the target condition.


Key Clinical Trial Findings

Phase 3 Data

The primary evidence for the drug comes from two large-scale, double-blind, placebo-controlled Phase 3 trials. These studies examined the use of the medication over a 12-month period in adults diagnosed with the condition.

  • Joint Function: Researchers primarily assessed changes in the standardized Joint Function Index (JFI). The trials reported that a higher mean change in JFI scores was observed in the group receiving the drug compared to the placebo group.
  • Symptom Reduction: Secondary endpoints focused on pain severity (measured by a visual analog scale, VAS) and swelling. Researchers evaluated the difference in outcomes between the treatment and placebo groups.

Combination Therapy Studies

Phase 3 trials show that the combination was evaluated for potential changes in overall symptom management when the drug was co-administered with a standard-of-care analgesic. The findings of these combination studies were mixed. One trial reported a higher mean change in joint mobility scores with the combined therapy, while another study reported no statistically significant difference in pain scores between the two groups.


Safety and Tolerability Profile

Research examined the drug. Data on the incidence of adverse events were collected across the clinical trials. The most frequently reported adverse events (AEs) were headache, mild gastrointestinal distress, and injection site reactions (for the injectable formulation).

Rare adverse events were reported across the trials, including observations of elevated liver enzymes. The trials also explored the drug's potential for interaction with specific pre-existing heart conditions.


Comparison to Other Treatments

Research explored whether the drug compares to traditional treatments, specifically a non-steroidal anti-inflammatory drug (NSAID) regimen.

Trial Type Primary Outcome (JFI) Tolerability Finding
Head-to-Head Trial (6-month) Reported no statistically significant difference Drug group reported lower incidence of severe GI events

Administration Studies

Studies examined the use of the drug in specific dosing protocols, including once-daily dosing. Researchers evaluated how the results from the clinical trials compared when the drug was combined with supportive physical therapy versus drug use alone.

Frequently Asked Questions (FAQ)

Common questions about Cazetin (FAQ)

Q: Are there any specific foods or drinks that should be avoided while using Cazetin?

Official patient instructions advise against eating or drinking for about 20 minutes after using the oral suspension. This timing restriction is intended to allow the medication to remain in contact with the affected area for maximum therapeutic benefit.

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

Regulatory documents define the duration of a treatment course, specifying that the medication should be continued for the full time prescribed, usually for at least 48 hours after symptoms have cleared. However, there is no information in official regulatory documents that specifies a maximum safe duration for continuous long-term use.

Q: Can Cazetin be safely used by people who have liver concerns?

According to official product information, the medication is only minimally absorbed into the body from the gastrointestinal tract. Due to this property, regulatory documents do not specify any dosage adjustments for individuals with hepatic (liver) impairment.

Q: Is Cazetin safe to use for people who have kidney issues?

Official safety notes mention a specific caution regarding use in patients with kidney insufficiency. While the drug is minimally absorbed, official information suggests that significant plasma concentrations may occasionally occur in patients with renal (kidney) impairment when taking the oral therapy.

Q: What should I do if a side effect of Cazetin is concerning, but not listed as severe?

Official patient information indicates that a healthcare professional should be informed if side effects are severe, persist, or do not go away. They should also be notified if symptoms of local irritation or sensitization develop while using the medication.

Q: Is Cazetin a medicine that can be taken as needed, or does it need to be taken regularly?

The medication is prescribed as part of a fixed treatment course and should be taken regularly as instructed for the full duration. Official information states that it is not intended to be taken on an 'as needed' basis.

Q: How do I know if Cazetin is truly working for my condition?

Symptomatic improvement is the main measure used to evaluate the medication's effect. If there is a lack of improvement after the prescribed treatment course, or if symptoms persist, official guidance indicates a need for re-evaluation by a healthcare professional. This may include repeating microbiological studies.

Q: What are the ingredients in Cazetin besides the active one?

The oral suspension is formulated with several inactive components (excipients) in addition to the active ingredient, Nystatin. These typically include agents such as preservatives (like parabens), thickeners, flavoring agents, and sweeteners. The suspension also contains a small amount of alcohol, usually leq 1% v/v.

Q: How quickly does Cazetin start working after taking it?

While the full treatment course is required, symptomatic improvement from the infection may begin to be noticeable within one to three days. It remains essential to complete the medication for the full prescribed period to ensure the infection is completely resolved.

Q: If I miss a dose of Cazetin, what is generally recommended?

Official patient guidance for a forgotten dose is to take the missed dose as soon as it is remembered. However, if it is almost time for the next scheduled dose, the missed dose is typically skipped, with care taken not to take two doses at once.

Q: What happens if I stop taking Cazetin suddenly?

Stopping the medication prematurely, even if symptoms have improved, is officially cautioned against. Official patient information indicates that interrupting the treatment course can allow the infection to return and may prevent complete elimination of the causative pathogen.

Q: Is Cazetin known to cause a dry mouth?

Dry mouth is reported as a possible side effect of the oral formulation. Official safety information primarily focuses on localized adverse reactions such as gastrointestinal upset and oral irritation at the application site.

Q: Is it normal to feel tired or dizzy after starting Cazetin?

Tiredness, or fatigue, is not a commonly reported side effect in official documents. However, sudden or severe dizziness or confusion can be a sign of a rare but serious adverse event and are adverse events that warrant immediate reporting to a healthcare professional.

Q: Is Cazetin a controlled substance or addictive?

Official government classifications for this medication indicate that the active ingredient, Nystatin, is Not a controlled substance.

Q: How does the body break down Cazetin?

Due to its pharmaceutical properties, Cazetin (Nystatin) exhibits minimal systemic absorption from the gastrointestinal tract. Regulatory sources indicate that because of this minimal absorption, the medication is not metabolized to any appreciable extent by the body.

Q: What happens if Cazetin is taken with alcohol?

Official documents do not highlight specific interaction warnings regarding the consumption of alcoholic beverages during therapy. However, the oral suspension formulation itself contains a minimal amount of alcohol (typically leq 1% v/v) as an inactive ingredient.

Q: Is there a generic version of Cazetin available?

Yes, the active ingredient in Cazetin, Nystatin, is widely available as a generic prescription medication.

Q: Does Cazetin require any special lab tests while using it?

Routine lab monitoring tests are generally not specified as a requirement for all patients. However, if there is a lack of therapeutic response, your healthcare professional may order specific lab tests, such as repeat microbiological studies, to re-evaluate the condition.

Q: What is the primary way Cazetin is eliminated from the body?

Since the medication is minimally absorbed into the bloodstream, the majority of the dose that is orally administered is eliminated, or passed out of the body, unchanged in the feces.

Q: Does official guidance say Cazetin should be taken with food or on an empty stomach?

Official patient guidance for the oral liquid formulation indicates taking it after a meal or some food. The suspension itself should not be mixed with any food or drink.

Q: Can Cazetin affect the results of common urine or blood tests?

Official labeling advises that specific diagnostic tests, such as microbiological studies, may be ordered by a healthcare professional to check the therapeutic response. The official information does not indicate that the drug interferes with the results of common urine or blood tests.

Q: Is there a risk of developing a tolerance to Cazetin over time?

Regulatory-cited literature discusses the potential for resistance to develop in the target pathogen. Official information suggests that resistance (where the fungus is less sensitive) to Nystatin is generally minimal in the most common target organism, Candida albicans.

How should Cazetin be stored and disposed of?

Storage Requirements

Cazetin (Nystatin) must be stored strictly according to the conditions specified on its official label to ensure product stability and integrity. The medication should be kept at Controlled Room Temperature, typically 20 to 25 C (68 to 77 F), and must be protected from excess heat and moisture.

Crucially, the oral suspension formulation must not be frozen.

Packaging and Safety

To prevent contamination, keep Cazetin in its original container with the cap tightly closed. As a mandatory safety rule, the product must be stored out of the sight and reach of children.

Disposal Instructions

Unused or expired Cazetin should be discarded following official guidelines and must not be flushed down a toilet or poured down a sink. If a drug take-back program is unavailable, the medication should be mixed with an undesirable substance (such as coffee grounds) and placed in a sealed bag or container before being thrown into the household trash.

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

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