Keter

Quick links to important sections

Keter

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Keter

Property Description
Active Ingredient Ketoprofen (INN)
Pharmacological Class Non-Steroidal Anti-Inflammatory Drug (NSAID)
Typical Form Immediate-Release Oral Capsules
Common Use Symptomatic relief of pain and inflammation
Origin Synthetic Compound

What Type of Medicine is Keter?

Keter is a prescription medication whose active ingredient, Ketoprofen, belongs to the Non-Steroidal Anti-Inflammatory Drug (NSAID) class. It is a derivative of propionic acid, known for its powerful triple action: reducing inflammation, relieving pain, and lowering fever. Pharmacological studies have consistently noted its strong anti-inflammatory and analgesic effects compared to some common counterparts. The medicine is differentiated by its availability in immediate-release oral capsules, a formulation designed for rapid absorption.

Key Characteristics and Purpose

Ketoprofen is a synthetic compound, manufactured through chemical synthesis rather than being derived from natural sources. Keter's primary purpose is to offer effective, short-term symptomatic relief from mild to moderate pain. It is used to treat various types of discomfort, such as muscle aches and menstrual cramps. Due to its potent profile, Keter is typically managed under prescription (Rx status) to ensure appropriate use, setting it apart from lower-dose, over-the-counter NSAIDs.

Regulatory References

  1. Ketoprofen: MedlinePlus Drug Information

What side effects are possible with Keter?

Possible Side Effects and Safety Information for Keter

The information presented here summarizes the officially documented side effects and safety considerations for the drug Keter, strictly based on governmental regulatory documents.

Official Regulatory Status

There are no specific adverse reaction reports, warnings, or safety classifications currently published by major governmental drug regulatory authorities (such as the U.S. FDA or the European Medicines Agency) for a registered pharmaceutical product named Keter.

Adverse Reaction Scope

Since no official regulatory documentation for a drug named Keter has been located, the following categories cannot be populated with verified, official data:

  • Key adverse reaction categories: Not documented in official sources.
  • Frequency classification: Not classified (e.g., as very common, common, or rare).
  • System-organ classes involved: No specific system-organ classes (e.g., gastrointestinal, dermatological, nervous system) have been officially identified as targets for adverse reactions.
  • Serious adverse reactions: No serious adverse reactions have been documented in regulatory sources.
  • Population-specific safety considerations: No official data exists regarding safety in specific patient populations, such as pediatric, geriatric, or renally impaired individuals.

Safety Classifications and Restrictions

  • Regulatory frequency framework used: Not applicable; no data for classification exists.
  • Safety-related restrictions or limitations: No formal restrictions or limitations concerning use (e.g., contraindications, warnings) are documented in official regulatory labels for a drug named Keter.

Summary

The official safety structure for Keter is defined by the absence of specific, registered drug safety data in authoritative governmental regulatory sources. Consequently, the established risks, adverse events, or formal monitoring notes cannot be outlined. Any evaluation of potential side effects or safety measures would rely on information outside the scope of official, published regulatory documentation.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Keter can result in serious, life-threatening, or fatal outcomes, primarily affecting the respiratory, central nervous, and cardiovascular systems. The risk of severe toxicity is increased when Keter is combined with other central nervous system (CNS) depressants, such as benzodiazepines or alcohol.

Key overdose presentations and high-risk circumstances noted in regulatory documents include:

Classification Manifestation/Factor
Physical Symptoms Respiratory depression (slowed or shallow breathing), extreme sedation, stupor, or loss of consciousness.
Population Risk Accidental ingestion, particularly in children, may lead to a fatal overdose. Close monitoring is advised for elderly, debilitated, or chronic pulmonary disease patients.
Interaction Risk Concomitant use with other CNS depressants or alcohol can worsen adverse effects, increasing the risk of death.

When to Seek Immediate Medical Attention

If any individual is suspected of an overdose, or displays symptoms such as slowed or difficult breathing, unusual dizziness, or extreme sleepiness, immediate emergency medical help must be sought. Respiratory depression is a major concern that can occur at any dosage and may be life-threatening. The most critical action is to contact emergency services right away.

Therapeutic Uses of Keter

What Keter Treats: Main Uses and Benefits

Keter is relevant in contexts marked by increased discomfort and tension, applied across domains where additional symptomatic support is needed. The medication is commonly used to help manage symptoms related to inflammatory or irritative states affecting the joints and soft tissues. This includes conditions such as rheumatoid arthritis, osteoarthritis, tendonitis, and episodes of acute pain like gout or primary dysmenorrhea (menstrual cramps).

The medication is applied in scenarios where additional management of discomfort is required, and helps address symptoms that create noticeable physiological strain. By supporting symptom clusters that interfere with daily functioning, Keter provides supportive relief that helps ease the overall symptom burden. It is often used during phases when symptoms become more noticeable, assisting with maintaining functional stability and improving day-to-day comfort. The medication also plays a role in managing symptoms related to systemic imbalance, such as helping to manage elevated body temperature (fever).

Quick Fact: Supportive Relief for Pain, Inflammation, and Fever (Symptomatic management may be part of addressing these three core symptom axes in contexts involving heightened physiological activity.)

Regulatory References

  1. NIH MedlinePlus overview of Ketoprofen

Eligibility and Restrictions for Use

The eligibility for using Keter (Ketoprofen) is defined by specific population groups and pre-existing health conditions, as mandated by official government regulatory labeling.

Contraindicated Populations

Use of Keter is contraindicated and must not be attempted in the following groups:

  • Patients with a known history of hypersensitivity (allergy) to ketoprofen, aspirin, or any other Non-Steroidal Anti-Inflammatory Drug (NSAID).
  • Patients with severe heart failure.
  • Patients with active or recurrent gastrointestinal (GI) bleeding or peptic ulceration.
  • Patients with severe hepatic (liver) failure or severe renal (kidney) failure.
  • For the treatment of peri-operative pain in the setting of Coronary Artery Bypass Graft (CABG) surgery.
  • Pregnant individuals in the third trimester (from 30 weeks gestation onward).

Age and Life Stage Eligibility

Population Eligibility Status (Regulatory Wording)
Pediatric Patients (Under 18) Not established; use is generally not recommended.
Older Adults (ge 65) Use with caution and close monitoring due to increased risk of GI and renal events.
Pregnancy Contraindicated in the third trimester; not recommended in the first and second trimesters.
Lactation Not recommended (due to potential for drug excretion into breast milk).

Restricted/Conditional Use

Individuals with mild to moderate heart, kidney, or liver impairment, a history of GI disorders (e.g., Crohn's disease), or hypertension require special caution and monitoring according to official regulatory labeling.

What should I know about interactions with other medicines?

Keter Interactions with Other Medicines and Products

The interaction profile of Keter (Ketoprofen) is defined by officially documented risks associated with co-administration, primarily involving pharmacodynamic effects and altered drug clearance, as stated in government regulatory documents.


Interaction Status and Constraints

Classification Constraint or Effect (Official Regulatory Information)
Contraindicated Combinations Use for peri-operative pain in Coronary Artery Bypass Graft (CABG) surgery is prohibited. Co-administration with other NSAIDs and high-dose Aspirin is not generally recommended due to an increased risk of serious adverse events.
Exposure-Altering Interactions Probenecid is not recommended as it reduces Ketoprofen clearance, significantly raising plasma levels. Keter may elevate serum levels of Methotrexate and Lithium by inhibiting their renal clearance.
Pharmacodynamic Interactions Documented increased risk of bleeding when used with Anticoagulants (e.g., Warfarin) and Anti-platelet drugs (e.g., Clopidogrel). May reduce the antihypertensive and natriuretic effects of Diuretics and ACE Inhibitors, increasing the risk of renal failure.
Food/Substance Effects Co-administration with food results in a delayed and reduced peak concentration (Cmax) without changing overall absorption. Daily use of alcohol and tobacco may increase the risk for stomach bleeding.
Population Notes Elderly patients have a greater risk for serious gastrointestinal adverse events. A dosage reduction may be necessary for patients with Chronic Liver Disease due to altered pharmacokinetics.

Regulatory documentation structures the interaction profile around prohibitions, such as the CABG constraint, and specific drug combinations requiring close monitoring due to demonstrated changes in plasma levels (e.g., Lithium, Methotrexate). These official statements establish the context for co-administration risks, emphasizing additive gastrointestinal and bleeding concerns with specific agents.

Mechanism of Action

How Keter Works

The action of Ketoprofen (Keter) is centered on the inhibition of lipid-signaling pathways, which results in the modulation of eicosanoid production.


Modulation of Eicosanoid Biosynthesis

The drug's primary mechanism involves the non-selective, reversible inhibition of the Cyclooxygenase (COX-1 and COX-2) enzymes and a secondary inhibition of the Lipoxygenase (LOX) enzyme. These enzymes are critical components of the arachidonic acid cascade. By suppressing their activity, the drug dramatically reduces the synthesis of signaling molecules such as prostaglandins and leukotrienes. This action influences biological systems characterized by the upregulation of eicosanoid synthesis.


️ Alteration of Nociceptive and Thermoregulatory Signaling

The resulting reduction in prostaglandin concentration leads to a physiological outcome of altered signal transduction. Peripherally, the reduction of PGE2 limits the chemical sensitization of nociceptors, which alters the threshold for afferent nervous system activation. Centrally, the drug engages mechanisms that suppress PGE2 production in the hypothalamus. This modification results in the normalization of the hypothalamic thermoregulatory set-point and subsequent changes in core body temperature.

Dosage and Administration Information

How Keter is Used

Keter (Ketoprofen) is a medication utilized according to standard administration guidelines. The primary route of administration for Keter is oral, available in immediate-release capsules, which are typically found in strengths of 25 mg, 50 mg, and 75 mg.


Administration and Dosing Regimens

Usage patterns vary based on the clinical context, but the overall maximum daily dose must not exceed 300 mg across all approved indications. The dose and frequency are subject to adjustment based on the observed response to initial therapy.

Usage Context Typical Dosing Schedule Maximum Daily Limit
Chronic Conditions (e.g., Arthritis) Administered in divided doses (three to four times daily). 300 mg
Acute Conditions (e.g., Pain, Dysmenorrhea) 25 mg to 50 mg per dose, taken every 6 to 8 hours as needed. 300 mg

Procedural and Population Constraints

The capsules may be taken with food, milk, or antacids to support proper intake conditions. The immediate-release form of the medication is the required choice for managing acute symptoms; extended-release formulations are not indicated for this purpose.

Specific dosage limitations are detailed for certain patient populations. For older adults or those considered debilitated, treatment is typically initiated at the lower end of the dosing range. Furthermore, the maximum daily intake is restricted for individuals with renal or hepatic impairment, such as a limit of 100 mg per day in severe cases of kidney impairment.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Keter

Evidence for Symptom Management in Chronic Joint Conditions

Research has explored how symptoms change over time in conditions characterized by fluctuating or episodic manifestations, such as osteoarthritis and rheumatoid arthritis. The research base for these chronic joint conditions includes many short- to intermediate-term Randomized Controlled Trials (RCTs), as well as systematic reviews and meta-analyses that combine data from different studies. Studies conducted during periods of increased symptom activity evaluated measurements of pain intensity and physical function, and researchers observed differences in these measurements when compared to measurements reported by participants receiving placebo. However, the follow-up durations for many controlled trials were limited relative to the chronic nature of these conditions, often extending only up to 12 weeks. Therefore, there is limited information for long-term outcomes.


Evidence for Symptomatic Relief in Acute Pain and Menstrual Cramps

Research exploring short-term symptom changes was evaluated in studies focusing on acute or disruptive episodes, such as simple aches, certain musculoskeletal injuries, and Primary Dysmenorrhea (menstrual cramps). The evidence here largely comes from single-dose or very short-course RCTs designed to quickly measure responses to treatment. For acute pain, research explored the rapid nature of symptom change, and findings indicate patterns related to a quick measured difference in symptom onset compared to placebo. Similarly, research examined the use of Ketoprofen in conditions associated with acute or disruptive episodes like menstrual cramps, where studies reported measurements showing changes in pain levels. The research base is primarily focused on studies observing short-term symptom evolution, and there is limited information for long-term outcomes or how often acute pain episodes recur following treatment cessation.


Key Evidence Gaps and Areas of Scientific Uncertainty

The research highlights what is known and what is still uncertain about Ketoprofen. Evidence quality varies across studies due to differences in design and dosing. A key limitation is that there is limited information for long-term outcomes and the durability of any observed response in chronic conditions. Furthermore, findings were mixed in some studies, indicating variability in the measured outcomes. Sample sizes were modest for some specific acute indications, which limits the certainty for generalizing those specific findings broadly.

Key Studies & References

  1. Ketoprofen Oral Capsules: Full Prescribing Information (Reference for labeling, dosing regimen, and approved indications)

Frequently Asked Questions (FAQ)

Common questions about Keter (FAQ)


Q: What is the general success rate of Keter in clinical trials?

Studies and official information report that in trials for acute pain, a single oral dose of Ketoprofen was found to be associated with at least 50% pain relief over a 4 to 6 hour period when compared to placebo. The Number Needed to Treat (NNT)—a measure of efficacy—was reported to be approximately 2.9.


Q: How quickly should I expect to feel the effects of Keter?

According to official product information, the medication is rapidly absorbed. Peak plasma concentrations of the immediate-release capsule are generally reached between 0.5 to 2 hours following administration while fasting.


Q: What does 'contraindicated' mean in relation to Keter?

The term 'contraindicated' is used in regulatory documents to signify conditions where the medication must not be used. This is because, under those specific circumstances listed on the drug label, the risks of harm are significantly greater than any potential benefits.


Q: Does Keter interact with herbal supplements like St. John's Wort?

Official documents advise caution regarding potential interactions with certain herbal supplements. For instance, the combination of Ketoprofen with herbs like Ginseng may enhance the risk of bleeding. The full interactions label should be consulted for comprehensive details on specific substances.


Q: Do I need to take Keter at a specific time of day?

The dosing schedule is based on frequency, recommending administration in divided doses or every 6 to 8 hours as needed. Maintaining consistency in the dosing interval is generally considered more important than the specific time of day (morning versus evening).


Q: How long does one dose of Keter last in the body?

The medication is typically scheduled every 6 to 8 hours for pain management, which indicates the expected duration of its effective action. The drug’s terminal elimination half-life—the time it takes for half the drug to be cleared from the plasma—is approximately 2 to 4 hours.


Q: Why do some people say Keter causes weight changes?

Regulatory documents state that weight changes, including both weight gain and weight loss, have been reported as documented side effects in clinical trials. These effects are generally classified in the uncommon or rare frequency categories.


Q: Are headaches a common side effect of Keter?

Yes, official documents list headache as a common central nervous system (CNS) side effect. This means it has been reported to occur in approximately 1% to 10% of patients in clinical trials.


Q: Is it normal to feel a bit tired when starting Keter?

Somnolence (sleepiness/drowsiness) and fatigue are documented CNS side effects reported in clinical trials. These effects are not uncommon, as they occurred in up to 10% of patients.


Q: What if I accidentally take two doses of Keter close together?

If a dose is missed and the next scheduled dose is near, the product information states that skipping the missed dose is generally recommended. The product information also states that taking two doses at the same time is not advised.


Q: Does Keter affect sleep patterns?

Yes, official documents list insomnia (trouble sleeping) as a common psychiatric side effect. This is reported to occur in 1% to 10% of patients who use the medication.


Q: What are the most serious side effects associated with Keter according to official documents?

Official regulatory warnings highlight the potential for serious gastrointestinal (GI) bleeding or ulceration and an increased risk of serious cardiovascular events, such as heart attack or stroke, particularly with prolonged use.


Q: What happens if I miss a dose of Keter?

If the drug is taken on a regular schedule, the product information suggests that the missed dose may be taken as soon as it is remembered. If it is almost time for the next scheduled dose, the missed dose should be skipped.


Q: What is the half-life of Keter?

The drug's plasma elimination half-life is typically about 2 to 4 hours in healthy young adults. This measure indicates the time it takes for half of the drug to be cleared from the plasma after administration.


Q: Does taking Keter require any regular blood tests?

For certain patients with pre-existing conditions, such as severe kidney or liver impairment, official documents indicate that close monitoring of organ function may be required. Specific blood monitoring is also necessary if the drug is co-administered with certain other medications, like Lithium.


Q: Is it safe to drive or operate machinery while using Keter?

The label advises that the medication may cause side effects like dizziness, drowsiness, or blurred vision. The regulatory label contains a specific warning advising against driving or operating machinery until an individual is certain of the drug's effects.


Q: What does the drug's safety label say about mental health side effects?

Psychiatric side effects are documented in official sources. These reported events can include depression, insomnia, and nervousness. Other effects such as anxiety and confusion have also been noted.


Q: Can Keter be prescribed for uses other than the main ones listed?

Regulatory documents state that the official indications (approved uses) for this drug are limited to the conditions specified in the labeling, such as pain, dysmenorrhea, rheumatoid arthritis, and osteoarthritis.


Q: Is there a generic version of Keter available?

Yes, the active ingredient Ketoprofen is generally available in generic capsule formulations. These generic products are required to meet regulatory standards to ensure they are bioequivalent (work the same way) as the branded versions.


Q: Does Keter cause any changes to appetite?

Yes, loss of appetite (anorexia) is a documented side effect of Ketoprofen. This change is often noted in the gastrointestinal side effect profile in regulatory documents.


Q: Are there any known long-term side effects after using Keter for many years?

Official warnings indicate that the risk of serious side effects, such as cardiovascular and GI events, is increased with long-term use. However, most controlled clinical trials have been short-term, which limits the detailed long-term safety data available.


Q: Can I stop taking Keter suddenly?

Official labeling emphasizes that the healthcare professional determines when to stop or change treatment. Therefore, the product information suggests patients consult with their prescribing doctor before stopping the medication suddenly.


Q: Does Keter change the way my immune system works?

The drug's mechanism of action involves inhibiting enzymes that produce inflammatory eicosanoids (prostaglandins and leukotrienes). This action modulates the inflammatory response—a component of the innate immune system—by reducing the synthesis of signaling molecules that cause inflammation.


Q: Can Keter be crushed or split?

The official product information states that the immediate-release capsules must be swallowed whole. The label specifies that breaking, crushing, or chewing the capsules is not advised.


Q: What makes Keter different from other treatments for the same condition?

Ketoprofen is classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID). A key characteristic described in official product information is that it not only inhibits both COX-1 and COX-2 enzymes but also has a secondary effect on the 5-Lipoxygenase (5-LOX) pathway. This dual-enzyme modulation is part of its action profile.

How should Keter be stored and disposed of?

The official labeling for Keter (ketoprofen immediate-release capsules) specifies strict requirements for storage and disposal to maintain product stability and safety.

Storage & Disposal Scope

Scope Item Official Regulatory Requirement
Labeled storage temperature requirements: Store at controlled room temperature (20 to 25 C or 68 to 77 F).
Light/moisture protection requirements: Must be protected from moisture and stored in a tightly closed container.
Child-protection storage requirements: Must be kept out of the reach and sight of children.
Environmental disposal requirements: Do not flush down a toilet or pour down a drain.

Official Disposal Rules

Disposal must adhere to federal guidelines. Unused or expired medication should preferably be returned through a drug take-back program. If this option is not available, the product must be mixed with an unappealing substance, sealed in a container, and discarded with household trash, following specific regulatory procedures.

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

Equivalent of Keter found in:

A-Z Index: