Ketonal 2.5%

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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 Ketonal 2.5%

Quick Facts

Property Description
Active ingredient Ketoprofen (INN)
Form Gel (Topical)
Pharmacological class Nonsteroidal Anti-inflammatory Drug (NSAID)
Common use Localized pain and inflammation relief
Origin Synthetic (Propionic acid derivative)

What is Ketonal 2.5% Gel and Its Classification?

Ketonal 2.5% is a medicinal preparation for localized treatment that contains the active substance Ketoprofen. This ingredient is formally classified as a Nonsteroidal Anti-inflammatory Drug (NSAID) and belongs to the chemical family of propionic acid derivatives. This classification confirms the drug's fundamental function is to intervene in the body's inflammatory and pain response pathways.

Ketoprofen's primary mechanism, shared with the NSAID class, is to inhibit the synthesis of prostaglandins, which are key biological mediators that trigger swelling and sensitize nerve endings. The therapeutic utility of topical Ketoprofen is recognized for its localized efficacy in managing inflammatory soft tissue conditions. The medicine possesses a dual function in providing both analgesic (pain-relieving) and anti-inflammatory effects when used topically. This means the medicine is intended to actively target the chemicals that cause both pain and swelling.


Composition and Form: Targeted Topical Delivery

The medicine is supplied as a gel formulated for topical application onto the skin, containing Ketoprofen at a concentration of 2.5% w/w. This product is a single-component preparation designed exclusively for local action. The active ingredient is dispersed within a hydrogel matrix vehicle, distinguishing it from traditional greasy ointments and making it suitable for quick absorption.

This specialized gel form allows the therapeutic benefits of Ketoprofen to be concentrated in the underlying soft tissues, such as muscles, tendons, and joints, which is particularly beneficial for localized issues. This delivery method is intended to maximize the effect where it is needed while maintaining a favorable profile for localized treatments. Therefore, the gel is structured to focus its action precisely where the inflammation and pain are located.


What is the General Purpose of Topical Ketoprofen?

The general purpose of Ketonal 2.5% gel is to utilize its pharmacological actions to provide a concentrated anti-inflammatory and analgesic effect at the application site. By mitigating the biochemical signals that cause irritation, the preparation is primarily intended to alleviate localized pain and reduce associated soft tissue swelling. This provides focused symptomatic support for the body to manage inflammation in specific, affected areas.

Regulatory References

  1. Ketoprofen: MedlinePlus Drug Information

What side effects are possible with Ketonal 2.5%?

Possible side effects and safety information

This section describes the adverse reactions and safety characteristics of Ketoprofen 2.5% Gel as documented in official government regulatory texts, such as the Summary of Product Characteristics (SmPC) and equivalent labeling.


Documented Adverse Reactions

The most frequent adverse reactions involve the Skin and Subcutaneous Tissue Disorders.

Frequency Classification Examples of Documented Reactions
Uncommon (Localized) Erythema (redness), pruritus (itching), eczema, burning sensation at application site.
Rare (Localized/Systemic) Photosensitivity reactions, urticaria, bullous dermatitis, acute renal failure.
Frequency Not Known (Systemic) Anaphylactic reaction, angioedema, severe generalized skin reactions (e.g., Stevens-Johnson syndrome).

Serious Safety Considerations

Serious adverse reactions, though classified as Rare or Very Rare, include severe Photosensitivity Reactions and systemic hypersensitivity events such as anaphylactic shock. Isolated cases of Acute Renal Failure or aggravation of existing kidney issues have also been documented, reflecting the systemic potential of the NSAID class.

Population-Specific Constraints

Official labeling includes explicit restrictions for certain groups. The gel is contraindicated during the third trimester of pregnancy due to potential risks to the fetus. Furthermore, the safety and efficacy are not established for use in children under 15 years of age.

Exposure-Related Safety and Restrictions

The risk of systemic adverse reactions is stated to be related to the duration of treatment and the size of the applied area. A critical regulatory restriction is that the gel must not be applied to broken skin or exposed to sunlight or UV light during treatment and for a period of two weeks following discontinuation, due to the documented risk of photosensitivity.

Overdose and Emergency Response

Overdose: When to Seek Help

Ketonal 2.5% is a topical preparation with low systemic absorption. However, cases of overdose, primarily documented with high-dose oral formulations, highlight the potential risks of excessive systemic exposure to ketoprofen. In reported overdose events, general symptoms tend to include lethargy, drowsiness, nausea, vomiting, and epigastric pain.

More serious, high-exposure manifestations may affect the central nervous and renal systems, leading to symptoms such as seizures and renal (kidney) failure.

What to Do in Case of Overdose

There is no specific antidote for ketoprofen overdose. Treatment is supportive and symptomatic. Procedures for significant systemic exposure, as outlined in official documents, may include gastric lavage, administration of activated charcoal, and symptomatic maintenance therapy to support renal function.

When Immediate Medical Attention is Required

Urgent medical attention is necessary if a significant overdose is suspected or if severe symptoms occur, including:

  • Signs of serious internal bleeding: Bloody or tarry stools or vomiting blood.
  • Symptoms indicative of anaphylaxis or severe allergic reaction: Difficulty breathing or swelling of the face and throat.
  • Signs of a cardiovascular event: Chest pain, shortness of breath, or weakness on one side of the body.

It is essential to contact emergency services immediately if any of these severe manifestations are observed.

Therapeutic Uses of Ketonal 2.5%

What Ketonal 2.5% treats: main uses and benefits

Ketonal 2.5% gel is commonly used for managing conditions presenting with acute painful symptoms and localized inflammation. It is applied across domains where additional symptomatic support is needed. The formulation is used to assist in easing symptoms associated with minor trauma like sprains, strains, and contusions; inflammatory processes like musculo-tendonitis; and localized pain from degenerative joint conditions such as mild osteoarthritis.

The gel is applied in clinical settings that involve acute symptom patterns, such as when acute manifestations interfere with function. By addressing localized inflammatory reactions and pain, the product contributes to easing the overall symptom load, providing supportive relief when symptoms interfere with routine activities.


Summary: Support for Localized Discomfort
Primary Focus Symptoms related to inflammatory or irritative states
Common Scenarios Often used during phases when symptoms become more noticeable
Patient Benefit Eases discomfort and may assist with maintaining comfort during symptomatic periods

Eligibility and Restrictions for Use

Official Population Eligibility for Ketonal 2.5% Gel

Official regulatory documents define strict criteria for using Ketonal 2.5% (Ketoprofen) gel, primarily establishing contraindications (absolute prohibitions) and limitations for specific populations.


Contraindicated Populations (Must Not Use)
Individuals with known hypersensitivity to ketoprofen, acetylsalicylic acid (aspirin), or other NSAIDs (Non-Steroidal Anti-Inflammatory Drugs).
Patients with a history of photosensitivity reaction or skin allergy to related compounds, such as tiaprofenic acid, fenofibrate, UV blockers, or perfumes.
Patients with pathological skin changes (e.g., eczema, open wounds, infected lesions) at the application site.
Pregnant individuals during the third trimester.

Age and Conditional Use Restrictions
Pediatric Use: Safety and efficacy have not been established in children and adolescents; use is generally not recommended below the age of 12 or 15.
Pregnancy/Lactation: Use is contraindicated in the third trimester. Use in the first and second trimesters and during breastfeeding is not recommended.
Organ Function: Caution is required for use in patients with reduced heart, hepatic (liver), or renal (kidney) function.

Eligibility-Related Restrictions: The treated skin area must not be exposed to natural sunlight or artificial UV light during treatment and for a mandatory two weeks after treatment has ceased. Use should also be with caution in the elderly and in patients with concurrent asthma or certain respiratory conditions.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documentation indicates that systemic pharmacokinetic interactions are unlikely due to the low serum concentrations of Ketoprofen achieved following topical application of the gel. However, the official profile includes constraints related to local exposure and adherence to NSAID-class warnings.


Official Interaction Statements and Restrictions

Restriction Category Interacting Substance/Condition Official Constraint or Classification
Contraindicated Co-Exposure Sun Exposure, UV Light (Solarium) Mandatory avoidance during treatment and for two weeks after discontinuation to prevent severe photosensitivity.
Contraindicated Co-Application Octocrylene-containing products Must be avoided due to risk of cutaneous reactions; treatment must be stopped if reactions occur.
NSAID-Class Warning High-dose Methotrexate Cited as a serious interaction recorded for systemic NSAIDs, based on the potential for decreased elimination and increased toxicity of Methotrexate.

Population-Specific Cautions

Although systemic effects are minimal, official labeling advises caution in patients with reduced cardiac, hepatic, or severe renal function, as isolated cases of systemic adverse reactions, specifically renal affections, have been reported. Caution is also required for elderly patients, who are generally more susceptible to NSAID effects.

This interaction profile is primarily defined by mandatory local restrictions, while systemic drug-drug risks are officially minimized yet maintain specific class-related warnings for high-risk co-administered medicines.

Mechanism of Action

The Mechanism of Ketoprofen (Ketonal 2.5%)

The mechanism of Ketonal 2.5% gel involves the pharmacodynamic action of Ketoprofen, an ingredient that modulates signaling pathways related to inflammation and nociception at the site of application.


Dual-Pathway Modulation of Inflammatory Mediators

Ketoprofen's primary action is the non-selective, reversible inhibition of Cyclooxygenase (COX-1 and COX-2) enzymes. This inhibits the conversion of Arachidonic Acid into prostanoids ( PGE2) and other pro-inflammatory mediators. Furthermore, Ketoprofen modulates the effects of Bradykinin, a potent peptide that promotes peripheral nociceptive signaling. By targeting both the prostaglandin synthesis pathway and the bradykinin signaling pathway, the mechanism produces a significant attenuation of the chemical mediators that promote inflammation and peripheral nociceptive signaling.


Stabilization of Cellular Components

A secondary action involves the stabilization of lysosomal membranes within cells. During tissue damage, the breakdown of these organelles releases destructive enzymes that can contribute to localized tissue injury. By promoting the integrity of these cellular barriers, the mechanism contributes to limiting the self-propagation of the inflammatory response by reducing the contribution of cell damage to mediator release.

Dosage and Administration Information

Administration Regimen

Ketonal 2.5% Gel contains Ketoprofen and is administered exclusively by the topical route, involving direct application to the skin over the affected area. The established protocol involves adherence to the specified dosage and frequency.

Feature Guideline Summary
Route Topical (Cutaneous) application only.
Standard Dosing 2 to 4 grams of gel (corresponding to approximately a 5 to 10 cm ribbon of gel) is applied per dose. The total amount applied daily must not exceed 15 grams.
Frequency Application is typically performed two to three times daily, although guidelines permit one to four applications per day.
Duration Use is limited to short-term treatment, and the maximum duration of continuous application should not exceed 7 to 10 days.

Procedural and Population-Specific Use

The administration of the gel involves specific procedural steps. The prescribed quantity is to be massaged gently into the skin to facilitate localized action. After the application, it is specified that users wash their hands thoroughly, unless the hands are the area being treated. Instructions specify that the gel must not be applied to broken skin, open wounds, or mucous membranes, and it must not be covered with occlusive dressings.

Regarding population-specific use, the gel is not recommended for use in children and adolescents under 15 years of age due to a lack of established safety and efficacy data. For older adults, while specific dose adjustments are not mandated, the approach emphasizes utilizing the lowest effective amount for the shortest duration necessary.


Connection to Official Protocol

This structure defines the use of topical Ketoprofen as a highly localized and time-limited intervention. The established protocol involves specific procedural controls—including measured dosing, application technique, and strict duration limits—to ensure the preparation is used precisely as a non-systemic, external product.

Recent Clinical Evidence

Ketonal 2.5%: Recent Clinical Evidence

Evidence for Use in Acute Soft Tissue Injuries

The research base exploring studies of topical ketoprofen for acute, localized conditions like sprains, strains, and contusions primarily relies on short-term, randomized controlled trials (RCTs) and meta-analyses. These studies focused on outcomes related to physical discomfort and daily functioning in adult populations. Studies explored the patterns of change measured during the study period compared to control gels, and findings describe patterns observed in pain intensity measurements, which adds context to the broader evidence landscape related to short-term changes.

Evidence for Use in Mild to Moderate Osteoarthritis

Topical ketoprofen was evaluated in controlled studies that focused on pain and functional limitations associated with mild to moderate osteoarthritis, primarily in the knee joint. These were typically intermediate-term trials, with observation periods extending up to twelve weeks. The studies examined patient-reported outcomes using established measures that assess both pain and the ability to perform daily activities.

Research describes how symptoms evolved in the observed populations. However, high levels of symptomatic change were often observed in control groups receiving the carrier gel alone, which adds complexity when reviewing the findings compared to the control group.

What the Studies Did Not Fully Address

The available evidence highlights limitations in several areas. The follow-up durations were limited, meaning that long-term outcomes are not well characterized. Comparative evidence is sparse, meaning there is limited information to contextualize the measured outcomes against other available options. Furthermore, data for certain groups, such as pediatric patients or older adults with multiple health issues, remain insufficient.

Frequently Asked Questions (FAQ)

Common questions about Ketonal 2.5% (FAQ)

Q: What is Ketonal 2.5% used for?

A: Ketonal 2.5% is a gel formulation containing ketoprofen, a non-steroidal anti-inflammatory drug (NSAID). It is typically indicated for the local symptomatic treatment of pain and inflammation resulting from musculoskeletal conditions, such as sprains, strains, or tendonitis. The specific uses are outlined in the product's official labeling.

Q: How quickly does Ketonal 2.5% work?

A: The time it takes for topical medications to provide relief can vary significantly among individuals. Some people may notice a reduction in pain shortly after application, while others may require several days of consistent use as directed by a healthcare professional. It is important to follow the prescribed application schedule.

Q: Can I use Ketonal 2.5% for chronic pain?

A: Ketonal 2.5% is generally approved for short-term, localized treatment of acute painful and inflammatory conditions. For management of chronic pain, a healthcare provider should be consulted to determine the most appropriate long-term treatment strategy. Use should not exceed the duration recommended on the product label unless advised otherwise.

Q: What are the main side effects of Ketonal 2.5% gel?

A: The most common side effects are usually localized reactions at the application site. These may include skin redness (erythema), itching (pruritus), or mild irritation. A more serious but less common concern is photosensitivity (increased sensitivity to sunlight), which requires strict avoidance of direct sun exposure on the treated area, even on cloudy days. All potential side effects are listed in the patient information leaflet.

Q: Do I need a prescription for Ketonal 2.5%?

A: The availability of Ketonal 2.5% and whether it requires a prescription (Rx) or is available over-the-counter (OTC) depends on the specific regulatory status in your country. Patients should consult a pharmacist or healthcare provider to confirm the legal classification and dispensing requirements in their location.

How should Ketonal 2.5% be stored and disposed of?

How to Store and Dispose of Ketonal 2.5% Gel

Official regulatory guidelines define specific conditions for storing and disposing of Ketonal 2.5% gel (Ketoprofen) to maintain its quality and ensure environmental safety.


Storage Requirements

The gel must be stored at a temperature not exceeding 25 C and kept in a tightly closed container. It must be protected from direct light and moisture. Crucially, the product must be kept out of the sight and reach of children.


Stability and Disposal

Once the tube is opened, the medicine must be used within one month. The product must be kept away from naked flames and must not be burned.

Unused or expired gel must not be thrown away via wastewater or household waste. Patients should ask the pharmacist how to throw away unused medicine in accordance with local requirements.

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

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