Arthril

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Arthril

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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 Arthril

What is Arthril? The Foundational Definition

Property Description
Active ingredient Ketoprofen
Pharmacological Class Nonsteroidal Anti-inflammatory Drug (NSAID)
Forms Capsule, tablet, injection solution, gel, cream, or suppository
Common Purpose Symptomatic relief of pain and inflammation
Origin Synthetic (Propionic acid derivative)

Arthril: Definition and Classification as an NSAID

Arthril is a medicinal preparation containing the active ingredient Ketoprofen, and it is classified as a Nonsteroidal Anti-inflammatory Drug (NSAID). This designation identifies it as a synthetic, non-narcotic pharmaceutical agent intended to provide symptomatic relief from pain and inflammatory conditions.

The active substance, Ketoprofen, is chemically categorized as a propionic acid derivative, placing it in the same pharmacological class as agents such as ibuprofen. Ketoprofen’s primary action is the treatment of pain and inflammation associated with various musculoskeletal disorders. This allows for its utility in easing discomfort and reducing physical signs of inflammation. Unlike some other NSAIDs, Arthril is notably distinguished by its wide range of presentations, including both systemic and localized topical forms (gel/cream).

Composition, Origin, and Therapeutic Purpose

The pharmacological efficacy of Arthril is dependent on its single-ingredient active compound, Ketoprofen, which is a fully synthetic molecule manufactured for precise action. The compound is administered as a racemic mixture of its two mirror-image forms (enantiomers).

Arthril is available in numerous dosage forms, including oral, injectable, and topical preparations, each dictating the corresponding route of administration. Ketoprofen serves a dual function as an analgesic and an anti-inflammatory agent by reducing key mediators of the inflammatory process. This mechanism indicates that the drug's core benefit is linked to diminishing the body’s pain and swelling signals, making it a standard therapeutic choice for conditions where both pain and localized swelling are present.

Regulatory References

  1. MedlinePlus

What side effects are possible with Arthril?

Possible Side Effects and Safety Information

Arthril, a brand name for the active ingredient glucosamine sulfate, is generally considered to be well-tolerated when used appropriately. However, as with any medication or supplement, side effects can occur.

Common Side Effects

The most frequently reported side effects are generally mild and related to the digestive system. These may include:

  • Gastrointestinal issues: Nausea, abdominal pain, indigestion/dyspepsia, heartburn, diarrhea, constipation, or gas.
  • Other common effects: Headache, fatigue, and drowsiness.

Serious Side Effects and Precautions

While rare, serious reactions are possible and require immediate medical attention.

Allergy and Sensitivity: Individuals with a known shellfish allergy should be cautious, as glucosamine is often derived from the shells of crab, shrimp, or other shellfish. Allergic reactions, including itching, rash, or in rare cases, a severe reaction (anaphylaxis), may occur. Glucosamine may also potentially worsen symptoms in patients with asthma.

Metabolic and Organ Concerns: Caution is advised for individuals with certain pre-existing conditions:

  • Diabetes: Although research is mixed, some studies have raised concerns about glucosamine potentially affecting blood sugar levels or insulin sensitivity. Patients with diabetes should monitor their blood glucose closely.
  • Glaucoma: Glucosamine may increase the pressure inside the eye in some individuals. Patients with glaucoma should consult their doctor before use.
  • Liver Disease: Use of glucosamine is generally advised with caution in patients with liver conditions.

Drug Interactions

Glucosamine sulfate may interact with certain prescription medications. It is crucial to inform your healthcare provider about all medicines and supplements you are taking.

Medication Type Potential Interaction
Anticoagulants (e.g., Warfarin) May increase the blood-thinning effect, raising the risk of bruising or bleeding.
Acetaminophen (e.g., Tylenol) Taking the two together might affect the effectiveness of either the supplement or the medication.
Cancer Medications Glucosamine might block the effectiveness of some cancer medications (Topoisomerase II Inhibitors).

Discontinue use and seek medical advice if you experience any signs of a serious reaction, such as swelling of the face, tongue, or throat, or difficulty breathing.

Overdose and Emergency Response

Overdose and When to Seek Help

This section details the officially documented manifestations and required emergency actions for an overdose of Arthril (Ketoprofen), based strictly on regulatory labeling.

Classification Documented Manifestations
Common Clinical Signs Nausea, vomiting (sometimes bloody), abdominal pain, drowsiness, and lack of energy.
Severe Outcomes Seizures, coma (decreased consciousness), acute renal failure, hypotension, and potentially fatal gastrointestinal bleeding.

In the event of a suspected overdose, regulatory guidance mandates that individuals seek emergency medical attention immediately. Patients are advised to contact the national Poison Help line or local emergency services for immediate instruction and assistance.

There is no specific antidote known for Ketoprofen overdose. Management, as described in official prescribing information, is entirely symptomatic and supportive. This approach may include procedures such as gastric decontamination (e.g., activated charcoal or gastric lavage) if symptoms appear within four hours of ingestion or following a significant overdose. Due to the risk of severe systemic effects, hospital monitoring is generally required to check vital signs and perform blood and urine tests. Overdose with topical forms is considered unlikely due to low systemic absorption.

Therapeutic Uses of Arthril

What Arthril Treats: Main Uses and Benefits

Arthril (Ketoprofen) is applied across therapeutic domains to provide symptomatic relief from pain and inflammation, supporting the easing of symptom load. The medication is used for managing symptoms related to conditions like Rheumatoid Arthritis, Osteoarthritis, Ankylosing Spondylitis, musculotendinous trauma (such as sprains), and primary dysmenorrhea (menstrual cramps).

The medication is commonly used across conditions characterized by periods of heightened symptoms and is applied to address symptom patterns that create noticeable interference with daily stability. It offers support that may help maintain a sense of stability when symptoms are more noticeable, including persistent joint pain, swelling, and stiffness.

It is relevant in clinical situations where short-term symptomatic assistance is needed, such as managing discomfort following an injury or acute episodes of gout. It also supports the management of the systemic symptom of fever when it accompanies underlying inflammatory processes.

“This therapeutic agent is considered relevant for offering supportive relief during difficult episodes by easing the overall symptom load.”


Quick Fact: Relief for Inflammatory Symptoms

The core therapeutic function of Arthril is the symptomatic relief of symptoms related to inflammatory or irritative states, which may assist with maintaining functional stability and contributes to easing distress during symptomatic periods.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

The eligibility for using Arthril (Ketoprofen) is strictly defined by regulatory authorities and is based on a patient's medical history, age, and physiological status.

Contraindicated Populations (Must Not Use)

Use is strictly prohibited in several populations, as mandated by regulatory labels, including:

  • Patients with known hypersensitivity to Ketoprofen or with a history of allergic reactions (e.g., asthma, urticaria) induced by Aspirin or other NSAIDs.
  • In the setting of Coronary Artery Bypass Graft (CABG) surgery.
  • During the third trimester of pregnancy.
  • Patients with active peptic ulceration, severe gastrointestinal bleeding, severe heart failure, or severe hepatic/renal insufficiency.

Eligibility Restrictions and Limitations

  • Age-Related Rules: Safety and effectiveness for prescription use are not established in patients under 18 years of age. Older adults require careful monitoring and potential dose reduction.
  • Organ Function: Patients with non-severe renal or hepatic impairment require close monitoring, and their maximum daily dosage is restricted as defined by the regulator.
  • Physiological Status: Use is not recommended for women who are breastfeeding or in the first two trimesters of pregnancy unless clearly necessary.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Arthril (Ketoprofen) documents interactions defined by pharmacokinetic alterations and additive pharmacodynamic risks.

Interaction Classifications (High-Level)

Interaction Severity Classification
Contraindicated: Use in the setting of Coronary Artery Bypass Graft (CABG) surgery for perioperative pain.
Contraindicated: Co-administration with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs) or Aspirin.

Official Interaction Statements

  • Pharmacokinetic Interference: Co-administration with Lithium or Methotrexate decreases the renal clearance of these agents, which formally results in increased plasma concentrations and potential toxicity.
  • Increased Bleeding Risk: Concurrent use with Oral Anticoagulants (like Warfarin), Antiplatelet agents, or SSRIs increases the documented risk of bleeding and hemorrhage due to additive effects on platelet function.
  • Antihypertensive and Diuretic Effects: The diuretic and blood pressure-lowering effects of medicines like ACE inhibitors, ARBs, and Thiazide diuretics may be diminished, and the risk of nephrotoxicity is officially increased.
  • Gastrointestinal Risk: Co-administration with Corticosteroids increases the risk of severe gastrointestinal events, including ulceration.
  • Substance Interactions: Alcohol and tobacco use are documented to increase the risk of gastrointestinal adverse effects.
  • Population Note: Interactions involving clearance-sensitive agents are clinically more significant in patients with impaired renal function or in geriatric patients.

Connection to the Overall Interaction Profile

Regulatory documentation structures Ketoprofen's interaction profile around a high pharmacodynamic risk with agents affecting coagulation, alongside a pharmacokinetic potential to reduce the renal excretion of narrow therapeutic index drugs. This framework strictly prohibits use in specific conditions like CABG surgery and requires consideration for agents cleared through the kidney to prevent systemic accumulation.

Mechanism of Action

How Arthril Works: The Mechanism of Action


️ Modulating Cartilage Matrix Structure

Arthril (Glucosamine) functions as a fundamental anabolic precursor required by chondrocytes for the synthesis of proteoglycans and glycosaminoglycans . This interaction supports the cell's ability to synthesize these structural components, and the synthesis of these components helps maintain the tissue's viscoelastic and hydrodynamic properties.


️ Anti-Catabolic and Anti-Inflammatory Effects

The compound acts as a modulator of cellular signaling by interfering with the activation of the NF-kappaB pathway. This mechanistic cascade inhibits the activity and expression of catabolic enzymes, such as Matrix Metalloproteinases (MMPs), responsible for extracellular matrix degradation, and lowers the production of pro-inflammatory cytokines (e.g., IL-1beta) within the joint.


Systemic Physiological Consequences

The combined mechanistic effects—enhanced synthesis of structural components and reduced catabolic enzyme activity—shift the local metabolic balance toward an anabolic state by favoring synthesis over degradation. This modification of biochemical processes results in a slower rate of cartilage turnover and reduced production of pro-inflammatory mediators, which are the core physiological adjustments produced by the drug's mechanism.

Dosage and Administration Information

How to Use Arthril: Administration Guidelines

The administration of Arthril (Ketoprofen) is defined by parameters that specify the route, dosing regimen, and administration constraints. The medicine is available for use via oral (capsules/tablets), parenteral (injection solution), rectal (suppository), and topical (gel/cream) routes. This diversity in forms dictates the method of application, supporting both systemic and localized approaches.

Standard guidance establishes the adult dosing range, with a maximum systemic dose that typically does not exceed 300 mg per day. The dose is generally adjusted to the minimum effective amount for long-term management of chronic conditions, while parenteral use is limited to short-term acute administration, typically not exceeding 48 hours.

Dosing frequency depends on the formulation: immediate-release forms are utilized in divided doses throughout the day, whereas extended-release tablets are scheduled for once-daily use. An administration constraint requires oral formulations to be taken with food, milk, or an antacid to assist with tolerance. Procedural instructions indicate that intravenous solutions require dilution before infusion and must be administered slowly. Furthermore, extended-release tablets must be swallowed whole and cannot be crushed or chewed. For specific populations, such as older adults and individuals with reduced renal or hepatic function, a reduction to the lower end of the established dosing range is typically required.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Arthril (Ketoprofen)


Evidence for Use in Inflammatory Joint Conditions (RA and OA)

The research exploring outcomes related to symptoms in chronic conditions such as Rheumatoid Arthritis (RA) and Osteoarthritis (OA) primarily relies on short-term Randomized Controlled Trials (RCTs) and Systematic Reviews. These studies examined changes in patient-reported pain intensity and functional status over defined periods in adult populations. While findings describe patterns observed in measured changes, follow-up durations were limited. Controlled research has not established data on the long-term maintenance of functional status or the course of disease progression.


Evidence for Use in Acute Pain and Musculoskeletal Trauma

Arthril was evaluated in research exploring short-term symptom changes associated with acute pain from injuries like sprains, strains, and pain following certain surgical procedures. These involved very short-term RCTs, where studies monitored the speed and extent of changes in acute pain scores within the first few hours. The research is focused exclusively on the initial, acute phase; consequently, the existing evidence does not provide research context for examining pain outcomes over intermediate or long-term recovery periods.


Long-Term Studies and Evidence Gaps

Most controlled studies for Arthril were observed in short time intervals (hours up to six months). Long-term effects are not fully established because the follow-up durations were limited in the majority of core RCTs. The sustained patterns of patient-reported outcomes remain areas where data are still emerging. Furthermore, research focused on the general adult population. Data for certain groups remain insufficient, particularly the pediatric patient group and specific groups defined by severe comorbidity.

Key Studies & References

  1. Ketoprofen: MedlinePlus Drug Information
  2. Efficacy and safety of ketoprofen for the treatment of episodic tension-type headache: a meta-analysis
  3. Clinical Guideline: Osteoarthritis: care and management (NICE)

Frequently Asked Questions (FAQ)

Common questions about Arthril (FAQ)


Q: How is Arthril different from over-the-counter joint supplements?

A: The classification of Arthril's active ingredient (Glucosamine) varies by region. In the United States, it is widely classified as a dietary supplement and has not been approved by the FDA for medical use in humans. However, in many European countries, the sulfate form is approved and regulated as a formal medical drug.


Q: Does Arthril only treat symptoms, or does it help the underlying issue?

A: Official information indicates that the product contains components with different functions. One component is described as providing symptomatic relief from pain and inflammation. The other component (Glucosamine) is described as an anabolic precursor, meaning it supports the natural synthesis and structure of cartilage components.


Q: Can Arthril be taken long-term?

A: Regulatory documents suggest that for chronic conditions, the medicine is sometimes used as part of a long-term treatment plan. Regulatory research summaries indicate that long-term effects and safety have not been fully established in the majority of core clinical trials.


Q: Is Arthril a natural product or a synthetic medicine?

A: The active ingredients are sourced in different ways. The component Ketoprofen is a fully synthetic molecule manufactured for precise action. The other component, Glucosamine, is typically produced by the hydrolysis of shellfish exoskeletons or sometimes by grain fermentation.


Q: Are there any food restrictions while using Arthril?

A: Official administration constraints state that oral forms of the medicine are instructed to be taken with food, milk, or an antacid to help with proper tolerance in the stomach. Additionally, the use of alcohol is documented to increase the risk of gastrointestinal adverse effects.


Q: Does Arthril require continuous use, or can I stop when I feel better?

A: Treatment for chronic conditions is generally intended for a long duration. Patient guidance on the Glucosamine component suggests evaluating the treatment after approximately two months; if no symptomatic improvement is noted by then, there is little chance of therapeutic benefit.


Q: What does the research say about Arthril for conditions other than joint problems?

A: Regulatory-cited research focuses primarily on the relief of symptoms related to rheumatoid arthritis, osteoarthritis, acute pain, sprains, strains, and pain following certain surgical procedures. The medicine is officially recognized for its utility in easing discomfort and reducing the physical signs of inflammation in these musculoskeletal conditions.


Q: Does Arthril contain any gluten or common allergens?

A: Due to its common source, the Glucosamine component may be unsuitable for individuals with a known shellfish allergy. However, regulatory documents do not typically specify information regarding the presence or absence of gluten in the final product formulation.


Q: Why is the mechanism of action for Arthril described as complex?

A: The mechanism of action is described through multiple biochemical pathways. It is cited as functioning as an anabolic precursor to help build cartilage components, while also acting as a modulator of cellular signaling that inhibits catabolic enzymes and pro-inflammatory mediators within the joint.


Q: Is Arthril meant to be a permanent treatment?

A: For chronic conditions, treatment is often part of a long-term plan, with the goal of managing the condition over time. Regulatory research summaries indicate that long-term effects and safety have not been fully established in the majority of core clinical trials.


Q: What is the overall safety profile of Arthril, according to official sources?

A: Official US warnings cite risks of serious and potentially fatal cardiovascular thrombotic events (such as heart attack or stroke) and serious gastrointestinal adverse events (including bleeding and ulceration). It is also strictly contraindicated for pain following Coronary Artery Bypass Graft (CABG) surgery.


Q: Can Arthril be taken with other pain relievers?

A: Official regulatory labels state that the use of Arthril is contraindicated (strictly prohibited) with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs) or Aspirin. This is due to the increased risk of gastrointestinal side effects and bleeding. The product information does not list the full range of other pain relievers.


Q: Are there specific symptoms that signal a serious side effect from Arthril?

A: Official US warnings and safety information describe signs of serious side effects that may occur. These can include signs of an allergic reaction (such as swelling of the face or throat), symptoms of a cardiovascular event (like chest pain or weakness on one side of the body), or signs of gastrointestinal bleeding (such as black, tarry stools or vomiting blood).


Q: Does Arthril contain any animal products?

A: The Glucosamine component is commercially produced by the hydrolysis of shellfish exoskeletons (e.g., crab, shrimp, lobster), which are considered animal products. Individuals seeking non-animal-derived products should note this common sourcing method.


Q: How long does it usually take to notice an effect from Arthril?

A: The time to notice an effect varies by the active ingredient. For the Ketoprofen component (immediate-release forms), some pain relief may be reported within 30 minutes after a single dose. For the Glucosamine component, reported symptomatic improvement in chronic conditions typically varies, requiring approximately three to eight weeks of use.


Q: Can I take Arthril if I have high blood pressure?

A: Regulatory warnings indicate the medicine is associated with a need for caution in individuals with pre-existing high blood pressure (hypertension). NSAIDs can cause new or worsened hypertension, and regulatory guidance emphasizes close monitoring of blood pressure during use.


Q: Is it true that Arthril is often used for knee issues?

A: Regulatory-cited research focuses on inflammatory joint conditions. While general use covers various areas, a high volume of controlled trials specifically evaluates the Glucosamine component’s effects on symptoms associated with knee osteoarthritis.


Q: Is Arthril available without a prescription?

A: The status depends on the formulation and region. The active ingredient Glucosamine is often sold without a prescription in the United States as a dietary supplement. In many European countries, the sulfate form is approved and regulated as a formal medical drug, which may require a prescription.


Q: What happens if I miss a day of taking Arthril?

A: Regulatory patient guidance advises that if a dose is missed and it is almost time for the next scheduled dose, the missed dose be skipped. Individuals are advised not to take extra medicine to make up the dose.


Q: Does Arthril affect my ability to drive or operate machinery?

A: Official documents advise that if side effects such as dizziness, drowsiness, or visual disturbances are experienced, activities requiring high alertness, such as driving a car or operating machinery, are generally advised against.


Q: What should I do if I think Arthril is not working after a few weeks?

A: Patient guidance suggests that if the condition being treated does not improve or appears to worsen, or if there is no pain reduction after approximately two months of use, the individual is advised to consult with their healthcare provider for evaluation.


Q: Does taking Arthril affect laboratory tests?

A: Regulatory documents note that in some patients receiving the medicine, abnormal values were found for certain laboratory tests. These include alkaline phosphatase, lactic dehydrogenase, glutamic oxaloacetic transaminase, and blood urea nitrogen (BUN).


Q: Is there a Black Box Warning for Arthril in the US?

A: Yes, the Ketoprofen component carries Black Box Warnings from the FDA. These warnings concern the increased risk of serious cardiovascular events (such as heart attack or stroke), serious gastrointestinal events (including bleeding and ulceration), and a contraindication for pain after Coronary Artery Bypass Graft (CABG) surgery.

How should Arthril be stored and disposed of?

Storage and Handling Requirements

Arthril (Ketoprofen) must be stored at Controlled Room Temperature (typically 15 C to 30 C) as defined by regulatory standards. The product must be stored away from excess heat, freezing, and moisture. It is required to keep the medication in its original container, tightly closed, and protect it from light. All forms of the medicine must be stored out of the sight and reach of children.

Disposal Instructions

Unused or expired Arthril must be disposed of according to official regulatory guidance. The preferred method is using a pharmacy take-back program. If this is unavailable, the medicine must be prepared for disposal in household trash by mixing it with an unappealing substance, placing it in a sealed container, and discarding it. Environmental regulations prohibit disposal into the sewage system or drains.

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

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