Fetik

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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 Fetik

Property Description
Active Ingredient Ketoprofen
Form Tablet, Capsule, Topical Gel/Patch, Solution
Pharmacological Class Nonsteroidal Anti-inflammatory Drug (NSAID)
General Purpose Relief from pain, inflammation, and fever
Origin Synthetic compound

What Type of Medication is Fetik (Ketoprofen)?

Fetik, containing the active substance Ketoprofen, is a synthetic propionic acid derivative that belongs to the large class of medications known as Nonsteroidal Anti-inflammatory Drugs (NSAIDs). This classification signifies that it is a systemic agent designed to address symptoms arising from discomfort and swelling across the body. Ketoprofen is characterized by its cyclooxygenase (COX) enzyme inhibition. This mechanism is distinctive among NSAIDs because, in addition to COX inhibition, Ketoprofen exhibits significant anti-bradykinin activity, an attribute associated with its robust analgesic profile.


Composition and Available Forms of Fetik

The medication Fetik is a single-active-ingredient product, containing only the chemically defined substance Ketoprofen as the therapeutically active substance. This active compound is provided in several pharmaceutical preparations, allowing for flexibility in its application. Common forms include solid oral forms, such as tablets and capsules, designed for oral administration, and topical formulations for direct cutaneous application, often used for localized soft tissue discomfort. The available formats also include forms for intravenous administration, which are reserved for situations requiring rapid systemic intervention.


The General Purpose and Action of Fetik

The general purpose of Fetik is to provide symptomatic relief by mitigating the body's responses to irritation and tissue damage, such as the discomfort associated with acute musculoskeletal strain. Its core action is achieved through the inhibition of prostaglandin synthesis, which works to calm the biochemical processes that drive pain and swelling. The overall effect of Fetik is the combination of its anti-inflammatory property, which reduces swelling and tenderness, its analgesic property, which diminishes the sensation of pain, and its antipyretic property, which helps to lower fever.

Regulatory References

  1. National Library of Medicine

What side effects are possible with Fetik?

Possible Side Effects

Fetik, an S1P receptor modulator, may cause a range of side effects. It is important to discuss these with your healthcare provider. The most common side effects often include:

  • Headache
  • Influenza-like symptoms
  • Diarrhea
  • Back pain
  • Cough
  • Elevations in liver enzyme levels (a sign of potential liver problems)

Serious Adverse Reactions

Fetik can cause serious side effects that may require immediate medical attention:

  • Bradycardia (slowed heart rate) and Atrioventricular (AV) conduction blocks, particularly after the first dose. Patients are typically monitored for several hours after the initial dose.
  • Increased risk of infection due to a reduction in white blood cell count (lymphopenia). This may include serious infections like Herpes Zoster (shingles) or, rarely, Progressive Multifocal Leukoencephalopathy (PML).
  • Macular Edema, a swelling at the back of the eye, which can lead to blurred vision. Regular eye exams are recommended.
  • Liver Injury, sometimes signaled by symptoms like jaundice (yellowing of the skin or eyes), dark urine, or abdominal pain. Liver function tests should be monitored periodically.
  • Increased Blood Pressure (Hypertension).
  • Fetal Risk: Fetik can cause harm to an unborn baby. Women of childbearing potential must use effective contraception during treatment and for two months after stopping the medication.

Safety Information and Monitoring

Do not take Fetik if you have had a recent stroke, transient ischemic attack (TIA), certain severe heart conditions (e.g., Mobitz type II second-degree or third-degree AV block, sick sinus syndrome without a pacemaker), or an active, severe infection. Inform your doctor about all existing health conditions, especially heart, liver, or kidney problems, diabetes, and a history of uveitis or melanoma. Regular blood tests and eye exams are crucial components of monitoring safety during Fetik therapy.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Fetik (Ketoprofen) emphasizes the need for immediate action in cases of suspected overdose, as no specific antidote is known for acute NSAID toxicity.

Overdose presentations documented in official sources commonly include gastrointestinal effects such as nausea, vomiting (potentially with blood), and stomach pain, alongside central nervous system effects such as headache, dizziness, drowsiness, confusion, and unsteadiness.

Classification Type Official Regulatory Statement
Severity Overdose can lead to severe and life-threatening outcomes, including acute renal failure, seizures, coma, and major gastrointestinal bleeding or perforation.
Emergency Action Seek immediate medical help or contact the national Poison Control Center or local emergency services right away for any suspected overdose.
Management Treatment is strictly symptomatic and supportive, which may involve procedures like activated charcoal or gastric lavage in certain acute cases, and monitoring of vital signs.

Regulatory documentation notes that the elderly are at greater risk for severe GI complications, which is a key concern in overdose. The severity classification is defined by the potential for these systemic outcomes, requiring prompt monitoring and supportive care.

Therapeutic Uses of Fetik

What Fetik Treats: Main Uses and Benefits

Fetik, containing Ketoprofen, is commonly used for symptomatic relief across relevant domains, supporting the management of symptoms that may interfere with daily functioning. Its therapeutic areas include addressing symptoms such as pain, stiffness, and swelling.

The medication may be relevant in contexts marked by increased discomfort or tension, such as in conditions involving rheumatoid arthritis, osteoarthritis, tendonitis, or sprains. It may also assist with managing symptoms related to systemic imbalance, such as fever, and is relevant in situations involving discomfort related to the menstrual cycle (dysmenorrhea).

It is often used during phases when symptoms become more noticeable, such as during sudden flare-ups or after minor procedures. This provides support that helps ease the overall symptom burden, assisting with maintaining a sense of stability when symptoms are more noticeable.

“Fetik is applied in situations where additional symptomatic support is needed to address clusters of symptoms that may become intense or disruptive.”


Quick Fact: Relevant for Managing Inflammation and Musculoskeletal Symptoms

Regulatory References

  1. National Library of Medicine MedlinePlus overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Fetik?

The official regulatory labeling for Fetik (Ketoprofen) defines eligibility based on absolute contraindications, organ function, and life stage. Use is primarily established for adults and sometimes adolescents (typically over 15 years, depending on the jurisdiction).

Contraindicated Populations (Must Not Use):

  • Patients with documented hypersensitivity to Ketoprofen, aspirin, or other NSAIDs.
  • Patients with active or history of recurrent gastrointestinal bleeding or perforation.
  • Patients with severe heart failure, severe renal impairment, or severe hepatic impairment.
  • Use is contraindicated in the third trimester of pregnancy (from 30 weeks gestation) and for peri-operative pain in the setting of CABG surgery.

Age and Life Stage Restrictions:

  • Pediatric Use: Safety and efficacy for systemic formulations have not been established in people under 18 years of age.
  • Older Adults: Use requires caution due to an increased risk of serious gastrointestinal and cardiovascular events.
  • Pregnancy/Lactation: Use is not recommended while breastfeeding and should be avoided from 20 weeks gestation onward.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Fetik (Ketoprofen) is officially documented by regulatory authorities as having significant interaction patterns that primarily relate to altering drug exposure or increasing the risk of adverse events.

Documented Interaction Restrictions

  • Other NSAIDs and Aspirin: Co-administration is not generally recommended due to the potential for increased adverse effects, notably a synergistic risk of serious gastrointestinal (GI) bleeding.
  • Probenecid: Concomitant use is not recommended because it reduces the plasma clearance of Fetik, which increases the overall exposure to the medicine.
  • Alcohol (Ethanol) and Smoking: Consumption of alcohol or use of tobacco officially increases the risk for GI bleeding when combined with Fetik.

Exposure and Efficacy Alterations

Fetik has been shown to interact with specific medicines by affecting their elimination:

  • Lithium: Fetik use can lead to an elevation of plasma lithium levels due to reduced renal clearance.
  • Methotrexate: Fetik may cause changes in Methotrexate elimination, resulting in elevated serum levels and increased toxicity.
  • Antihypertensives (ACE Inhibitors) and Diuretics: Fetik may diminish the antihypertensive effect of ACE Inhibitors and reduce the natriuretic effect of diuretics.

Patients who are elderly or are taking diuretics are specifically noted in prescribing information to be at greater risk for interaction-related renal problems or GI bleeding.

Mechanism of Action

How Fetik Works: The Biological Mechanism

Fetik (Ketoprofen) works by modulating specific signaling pathways at the molecular and cellular level. Its action is centered around two primary biological targets, resulting in specific physiological consequences.


Targeting the Cyclooxygenase Enzyme System

The core mechanism involves the reversible, non-selective inhibition of the Cyclooxygenase ( COX) enzymes ( COX-1 and COX-2). This action blocks the arachidonic acid cascade, suppressing the formation of Prostaglandins ( PGs). This reduction modifies signaling both peripherally, by reducing nociceptor sensitization and vascular changes, and centrally, by altering the hypothalamic thermoregulatory set point.


Modulating Peptide and Cellular Activity

Fetik also engages supplementary mechanistic domains by exhibiting anti-activity against the Bradykinin signaling pathway, which provides a COX-independent mechanism to influence mediators of the Kallikrein-kinin and eicosanoid systems. Furthermore, the drug stabilizes lysosomal membranes, resulting in the modulation of cellular processes that release hydrolytic enzymes during states of increased physiological activity.

Dosage and Administration Information

How to Use Fetik

The usage of Fetik, which contains the active substance Ketoprofen, is governed by the administration route and specific formulation to ensure systemic or localized application. The medication is primarily used through oral administration via immediate-release (IR) or extended-release (ER) capsules, or through topical application as a gel.

Official Dosing and Administration Principles

Oral administration is typically initiated at the lowest effective dose for the shortest duration necessary, particularly for acute pain management, which may be limited to ten days or less. The dosing schedule varies by formulation: Immediate-Release forms are administered in divided doses (e.g., three or four times daily), whereas the Extended-Release capsule is administered once daily (QD). The maximum daily dose for Immediate-Release oral forms is generally limited to 300 mg/day.

For proper administration, oral capsules may be taken with food, milk, or antacids to reduce potential gastric irritation, though this may slow absorption. Notably, Extended-Release capsules must be swallowed whole and should not be crushed or chewed. Topical usage involves massaging the prescribed amount of gel onto the affected area, with treatment generally not exceeding seven days unless directed by a specialist.

Population-Specific Use

Standard administration guidelines stipulate that lower starting and maintenance doses should be considered for older adults. Furthermore, dose limitations are typically implemented for patients with renal or hepatic impairment, often restricting the maximum daily intake, for example, to 100 mg/day in cases of severe impairment. If a dose is missed, it should not be doubled, and the next dose should be taken at the regularly scheduled time.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Fetik

The research describing Fetik, containing the active substance Ketoprofen, is based on a structured clinical evaluation focused on exploring how symptoms are measured in various painful and inflammatory conditions. This summary describes the types of studies conducted and the specific outcomes they evaluated, providing context on what the scientific literature has explored.


Evidence for Use in Chronic Musculoskeletal Conditions

The evaluation for conditions like Rheumatoid Arthritis (RA) and Osteoarthritis (OA) relied on Randomized Controlled Trials (RCTs) and Systematic Reviews. These studies were used in research exploring how symptoms change over time in adult populations with actively symptomatic chronic joint diseases.

The primary outcomes measured included patient-reported outcomes describing perceived discomfort (pain intensity scores) and outcomes reflecting daily functioning (measurements of stiffness and joint mobility). Findings describe patterns observed in the studies where groups receiving Fetik reported measurements compared to groups receiving placebo or another tested medication.

What remains uncertain is the relationship between this symptomatic exploration and the actual progression of the underlying disease. Research focuses on symptom change over time and does not document whether Fetik alters the long-term course of conditions like OA, which is a key limitation typical of this class of medication.


Evidence for Use in Acute Pain Management

For short-term pain situations, such as pain after a surgical procedure or an acute musculoskeletal injury, the evidence is primarily derived from single-dose, placebo-controlled RCTs. Studies explored outcomes describing episodic or acute changes, specifically measuring the level of reported pain change within the first few hours after dosing and the requirement for additional pain treatment.

Additionally, the topical formulation of Fetik was evaluated in short-term studies for acute soft tissue injuries (e.g., sprains), reporting outcomes describing perceived discomfort over defined, brief time intervals. The evidence for acute pain is mainly based on short-term scenarios, meaning follow-up durations were limited.

Key Studies & References

  1. Ketoprofen (medication summary, uses, and studies)

Frequently Asked Questions (FAQ)

Common questions about Fetik (FAQ)

Q: What if I forget to use Fetik one day?

A: Official administration guidelines state that the general principle when a dose is missed is to avoid doubling the next dose to compensate for the one missed. The next scheduled dose is typically taken at the regularly scheduled time. This guidance applies consistently to both oral forms and the topical application.


Q: Can Fetik be crushed or split?

A: Official information states that Extended-Release capsules must be swallowed whole and should not be crushed or chewed, as this can severely alter how the medicine is absorbed. The regulatory documentation for immediate-release tablets or standard capsules does not specifically address whether they can be split.


Q: What should I know about stopping the use of Fetik?

A: Fetik is typically prescribed for the shortest amount of time needed, especially for short-term pain relief, where use may be limited to ten days or less. The official documentation focuses on limiting the duration of treatment, but it does not generally describe a specific tapering or stopping process for the medication itself.


Q: Why do people say Fetik takes a long time to start working?

A: While Fetik is absorbed relatively quickly, official regulatory data indicates that taking it with food, milk, or antacids, as is often advised to reduce stomach irritation, can slow down the rate of absorption. This common administration practice may cause the medicine to take slightly longer to reach its maximum concentration in the body.


Q: Does Fetik affect sleep?

A: Official drug safety information lists both insomnia (difficulty sleeping) and drowsiness (feeling sleepy) as possible side effects. Adverse event reports also include mentions of unusual dreams. Any changes in sleep patterns should be reported to a healthcare professional.


Q: Can Fetik cause weight changes?

A: Official drug safety information lists both weight gain and weight loss as documented side effects of Fetik (Ketoprofen). If significant or concerning weight changes are observed, seeking guidance from a healthcare professional is generally recommended.


Q: Is Fetik known to cause mood changes?

A: Official adverse event reports for Fetik (Ketoprofen) have included documentation of effects like depression and personality disorder among the possible side effects. These effects relate to the central nervous system activity of the drug. If such effects are experienced, caution regarding activities requiring mental alertness is generally suggested in official warnings.


Q: Does Fetik make you feel tired or sleepy?

A: Official safety information for Fetik (Ketoprofen) lists drowsiness and sleepiness as possible documented side effects. Official warnings suggest that individuals determine how Fetik affects them before engaging in activities that require mental alertness, such as driving or operating machinery.


Q: How quickly should I expect to notice any effects from Fetik?

A: Fetik is considered rapidly absorbed when taken by mouth. Regulatory data shows that peak concentration in the blood is typically reached between 0.5 and 2 hours after taking an oral dose on an empty stomach. Taking it with food may slightly delay the peak time to around 2 hours.


Q: Has Fetik been studied in children?

A: While systemic forms of Fetik are generally not established for use in people under 18 years of age, published research has included studies specifically designed to evaluate the fever-reducing effects of its active ingredient in children. However, use is primarily limited to adults and adolescents over 15 years old.


Q: Is it okay to drive while taking Fetik?

A: Official warnings note that Fetik can cause side effects like dizziness, drowsiness, and blurred vision. Official warnings suggest that individuals assess their response to the medication before engaging in activities that require full attention, such as driving or operating heavy equipment.


Q: How long do most people stay on Fetik?

A: The length of Fetik treatment depends on the condition being addressed. For acute pain, use is typically limited to the shortest duration necessary, often 10 days or less. For chronic conditions like arthritis, treatment can be long-term but requires consistent medical monitoring.


Q: Is Fetik safe to use before surgery?

A: Fetik is strictly contraindicated, meaning it must not be used, for pain management in the period immediately surrounding coronary artery bypass graft (CABG) surgery due to increased cardiovascular risk. For other surgeries, pre-operative use may be avoided due to the documented risk of hemorrhage.


Q: Can Fetik affect my ability to concentrate?

A: Official drug safety information lists side effects such as confusion and drowsiness, which are cognitive or central nervous system effects that could indirectly impact concentration. If these effects are experienced, caution regarding activities requiring mental alertness is generally suggested in official warnings.


Q: Are generics of Fetik available?

A: Yes, Fetik (Ketoprofen) is available in generic form. Regulatory bodies like the FDA have approved generic versions of both oral and injectable Ketoprofen products, though the specific availability of generics may vary by country and formulation.


Q: How does Fetik relate to inflammation in the body?

A: Fetik is classified as a Nonsteroidal Anti-inflammatory Drug (NSAID). Its core action is to reduce symptoms of inflammation by inhibiting the cyclooxygenase (COX) enzymes, which are responsible for producing biochemicals called prostaglandins that promote swelling and pain.


Q: Is Fetik used to prevent future issues or just treat current ones?

A: The official purpose of Fetik is to provide symptomatic relief by mitigating existing pain, inflammation, and fever. It is not generally used for preventing the onset or altering the long-term progression of the underlying disease itself.


Q: Is Fetik available over the counter?

A: In the United States, Fetik (Ketoprofen) is primarily a prescription drug, labeled 'Rx only,' due to its potential for serious side effects and the need for medical supervision. However, lower-dose formulations of its active ingredient may be available without a prescription in some other countries.


Q: Why is Fetik only available by prescription?

A: Fetik is generally classified as prescription-only because of its potential for serious risks, including gastrointestinal bleeding and cardiovascular complications. Being prescription-only ensures that its use is overseen by a healthcare provider who can monitor for these potential adverse effects.


Q: Is Fetik the same as other medicines for the same condition?

A: Fetik belongs to the Nonsteroidal Anti-inflammatory Drug (NSAID) class, meaning it shares the primary mechanism of inhibiting COX enzymes with similar medicines. Official regulatory information notes that Fetik is distinct due to its additional anti-bradykinin activity, which influences other pain and inflammatory pathways.


Q: What is the difference between Fetik and a placebo in clinical trials?

A: The research supporting Fetik is largely based on randomized controlled trials (RCTs). These studies compare groups receiving Fetik to groups receiving an inactive substance (placebo), with findings describing measured changes in patient-reported symptoms, such as pain intensity or joint stiffness.


Q: Are headaches a common side effect of Fetik?

A: Yes, official drug safety data consistently lists headaches as one of the common side effects of Fetik. Clinical trial data has shown that the frequency of reported headaches may be higher at maximum daily doses compared to lower dosages.


Q: Is Fetik taken once a day or multiple times?

A: The dosing frequency depends entirely on the formulation: immediate-release (IR) oral forms are typically administered in divided doses several times a day. The extended-release (ER) capsule, however, is generally administered once daily (QD), as stated in official dosing principles.


Q: What are the most commonly reported side effects of Fetik?

A: According to official documentation, the most commonly reported side effects often include headache, influenza-like symptoms, diarrhea, back pain, and cough. Elevations in liver enzyme levels, which signal a potential issue, are also frequently reported.

How should Fetik be stored and disposed of?

Storage and Disposal Instructions for Fetik

Fetik (Ketoprofen) must be stored and handled according to specific official regulations to maintain product stability and safety.

Storage Requirements

Fetik should be stored at controlled room temperature, specifically between 20^circC and 25^circC (68^circF and 77^circF). The product must be protected from moisture, excessive humidity, and light. It is mandatory to keep Fetik in its original container, which must be kept tightly closed. The medicine must not be frozen.

Child Safety and Disposal

As a crucial safety measure, Fetik must be kept out of the sight and reach of children at all times. Disposal of unused or expired Fetik should follow local regulations for pharmaceutical waste, often utilizing drug take-back programs. The product should not be discarded into household waste or wastewater.

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

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