Inflamyl

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Inflamyl

Inflamyl is a brand name for the prescription drug Mefenamic Acid, which is primarily used for the short-term management of mild-to-moderate pain and inflammation.

Quick Facts Description
Active Ingredient Mefenamic Acid
Form Oral Capsule (typically 250 mg)
Pharmacological Class Nonsteroidal Anti-inflammatory Drug (NSAID)
Common Use Short-term relief of pain and menstrual cramps (dysmenorrhea)
Origin Anthranilic acid derivative (Fenamate class)

Inflamyl is a prescription-only medication that belongs to a class of powerful pain and inflammation relievers known as Nonsteroidal Anti-inflammatory Drugs, or NSAIDs. It is specifically an anthranilic acid derivative, a distinct chemical group within the NSAID family, and is clinically recognized for providing three core effects: pain-relieving (analgesic), swelling-reducing (anti-inflammatory), and fever-reducing (antipyretic).

Healthcare providers often prescribe Inflamyl for managing acute, short-term pain, meaning temporary rather than chronic discomfort. A common scenario involves the effective relief of muscle aches, dental pain, or post-operative pain. It is also particularly effective and widely prescribed for addressing the specific pain and cramping associated with menstrual periods (primary dysmenorrhea).

Inflamyl achieves its therapeutic effects by interfering with the body's natural signaling process for pain and inflammation. It works by temporarily blocking the activity of enzymes responsible for producing prostaglandins, which are key chemicals that trigger pain, fever, and swelling. This targeted action is what gives the medication its benefit in reducing discomfort and inflammation at the source.

Regulatory References

  1. MedlinePlus Drug Information, U.S. National Library of Medicine
  2. Mefenamic Acid - LiverTox, National Center for Biotechnology Information (NCBI)

What side effects are possible with Inflamyl?

Possible Side Effects and Safety Information

The official safety information for Inflamyl documents several categories of adverse reactions, including potentially life-threatening events. The medicine carries regulatory warnings regarding the risk of serious cardiovascular thrombotic events, which include myocardial infarction (heart attack) and stroke, as well as serious and potentially fatal gastrointestinal events, such as bleeding, ulceration, and perforation of the stomach or intestines.

Safety-Related Restrictions and Serious Risks

The risk of serious cardiovascular and gastrointestinal adverse events is formally stated to increase with higher doses and longer duration of use. Official regulatory guidance mandates the use of the lowest effective dosage for the shortest duration necessary to meet treatment goals and minimize these risks.

Inflamyl is strictly contraindicated (must not be used) in patients undergoing coronary artery bypass graft (CABG) surgery and in individuals with a history of asthma, hives, or other allergic-type reactions to aspirin or other NSAIDs. Use during the third trimester of pregnancy is also contraindicated due to the risk of premature closure of the fetal ductus arteriosus.

Common and Other Adverse Reactions

Adverse reactions that are frequently reported, typically considered common, include gastrointestinal effects like indigestion (dyspepsia), nausea, stomach pain, and diarrhea, as well as nervous system effects like headache and dizziness. The safety profile also includes documented risks of hepatotoxicity (liver injury), renal toxicity leading to kidney problems, severe skin reactions, and hypertension (high blood pressure). Monitoring of blood pressure and kidney function is explicitly recommended in at-risk patients.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documentation describes specific clinical signs and severe outcomes associated with an overdose of Inflamyl (Mefenamic Acid).

Documented Overdose Manifestations

System Officially Listed Symptoms and Signs
Gastrointestinal Nausea, vomiting, diarrhea, and upper abdominal pain.
Neurological Lethargy, drowsiness, headache, nystagmus, stupor, and tonic-clonic convulsions (seizures).

Severe Outcomes and Emergency Action

Overdose carries the documented risk of serious systemic complications, including acute renal failure, metabolic acidosis, progression to coma, and severe gastrointestinal bleeding. Overdose symptoms may be more severe in patients with pre-existing renal or hepatic impairment.

Regulators mandate that in the event of any suspected overdose, immediate medical attention must be sought. Emergency services or a Poison Control center must be contacted immediately, particularly if severe symptoms like collapse or a seizure occur.

Management Requirements

Management of Mefenamic Acid overdose is symptomatic and supportive, as no specific antidote is known. Officially documented procedural steps include the consideration of gastric lavage and the administration of activated charcoal. Furthermore, close medical observation is required, including the monitoring of renal function and the body's acid-base status.

Therapeutic Uses of Inflamyl

What Inflamyl Treats: Main Uses and Benefits

Inflamyl (Mefenamic Acid) is commonly used to help manage two primary therapeutic concerns: short-term pain relief and the management of menstrual cramping. It is relevant for easing symptoms related to mild-to-moderate pain, inflammation, and fever.

Relief for Acute, Mild-to-Moderate Pain and Aches

Inflamyl is primarily used across conditions characterized by periods of heightened symptoms that create noticeable interference with daily stability, such as muscle aches and discomfort following minor dental or surgical procedures. These uses apply specifically to contexts involving acute, temporary symptoms. It offers symptomatic relief that helps patients cope more steadily with difficult episodes and may assist with maintaining functional stability during temporary pain events.

“Inflamyl provides supportive relief when symptoms interfere with routine activities, contributing to improved day-to-day comfort.”

Specific Management of Menstrual Cramping

The medication is commonly used and relevant in clinical settings marked by the heightened patient distress of primary dysmenorrhea, which involves spasmodic pelvic and abdominal cramping. Inflamyl is applied during phases where the patient experiences heightened discomfort, providing support that helps ease the overall symptom burden of cyclical manifestations. The medication is relevant for managing symptom clusters that may become intense or disruptive.

Quick Fact: Relief for Acute Pain Description
Target Intensity Mild-to-moderate severity
Therapeutic Scope Analgesic, Anti-inflammatory, Antipyretic
Key Scenarios Post-dental, Muscle Aches, Primary Dysmenorrhea
Symptom Duration Short-term, acute episodes

Regulatory References

  1. National Institutes of Health (NIH) DailyMed overview

Eligibility and Restrictions for Use

Official Eligibility and Contraindication Rules

Inflamyl (Mefenamic Acid) is restricted to adults and adolescents generally 14 years of age and older for the approved short-term indications. Safety and effectiveness are not established for use in children under 14 years. Older adults (geriatric patients) are eligible but require caution and the lowest effective dose for the shortest duration, as mandated by regulatory documents.

The medicine is contraindicated (must not be used) in several absolute populations and conditions, including:

Classification Prohibited Conditions (Official Labeling)
Absolute Contraindication Known NSAID hypersensitivity or aspirin-induced asthma; active GI bleeding or peptic ulceration; severe heart, hepatic, or renal failure; peri-operative pain in the setting of CABG surgery; and pregnancy in the third trimester (after 30 weeks gestation) [NIH, FDA, EMA].
Conditional Use Status Patients with mild-to-moderate renal or hepatic impairment and those with uncontrolled hypertension are restricted to use with caution and monitoring. Use is not recommended in women who are breastfeeding or those attempting to conceive [FDA, EMA/SmPC].

These requirements define the population boundaries based on the risk profile of the NSAID class.

What should I know about interactions with other medicines?

Inflamyl Interactions with other medicines and products

Inflamyl (Mefenamic Acid) interacts with several medicinal product categories and substances, primarily by altering their physiological effect or clearance, as documented in official government prescribing information.


Documented High-Risk Combinations

Co-administration with other systemic non-aspirin NSAIDs is officially restricted and should be avoided due to an increased risk of serious gastrointestinal events. The drug is formally contraindicated for the management of peri-operative pain during Coronary Artery Bypass Graft (CABG) surgery. Additionally, the consumption of alcohol may increase the documented risk of gastrointestinal bleeding or ulceration.


Pharmacodynamic and Clearance Alterations

Inflamyl can enhance the effects of oral anticoagulants (e.g., Warfarin), increasing the risk of bleeding. The co-use of Corticosteroids or SSRIs is also documented as increasing the risk of gastrointestinal bleeding. Conversely, Inflamyl may reduce the antihypertensive effect of medicines like ACE inhibitors and diuretics. It can also interfere with the anti-platelet effect of low-dose aspirin.

Regarding drug exposure, Inflamyl reduces the renal clearance of substances such as Lithium and Methotrexate, which officially results in elevated plasma levels. Antacids containing Magnesium Hydroxide significantly increase the absorption rate of Inflamyl.


Administration Constraints

A mandatory timing rule exists for Mifepristone co-administration: Inflamyl should not be taken for 8–12 days after mifepristone administration. The interaction risk with certain antihypertensives is also noted as heightened in elderly patients.

Mechanism of Action

Targeting the NLRP3 Inflammasome

Inflamyl exerts its primary action by selectively modulating and inhibiting the assembly and activation of the NLRP3 inflammasome complex in innate immune cells. This multi-protein structure serves as a central regulatory component in initiating inflammation. This interaction is the first molecular step that limits the propagation of the inflammatory signal, thereby interfering with an upstream regulatory step in the signaling pathway.


Blocking the Caspase-1/Cytokine Cascade

By preventing the full activation of the NLRP3 complex, Inflamyl inhibits the Caspase-1 enzyme. This enzyme is essential for processing inactive cytokine precursors, specifically Pro-Interleukin-1beta (Pro-IL-1beta) and Pro-Interleukin-18 (Pro-IL-18), into their active, secreted forms. This action leads to a significant reduction in the production and secretion of active IL-1beta and IL-18, which are powerful signal transducers of systemic inflammation.


Resulting Mechanistic Consequences

The mechanistic cascade culminates in a reduction of signaling activity within the targeted pathways. By limiting the impact of the NLRP3/Caspase-1 axis, the drug results in the mechanistic consequences of decreased inflammatory signaling and suppressed inflammatory cell death (pyroptosis). This modulation of pyroptosis contributes to the regulation of tissue responses to inflammatory stimuli.

Dosage and Administration Information

Official Instructions for Use (Dosing and Administration)

This section outlines the administration and dosing procedures for this medicine. This information details the standardized protocol for administering the medicine.

Administration Scope Official Guideline
Route of Administration Sublingual (under the tongue) or Buccal (behind the lower lip). Do not chew or swallow the film.
Standard Dosing Regimen Administered as an acute, single initial dose of 120 mcg or 180 mcg based on the severity of the patient's condition.
Optional Dosing Up to two additional doses (e.g., 60 mcg or 90 mcg) may be administered if agitation persists, provided each subsequent dose is given at least two hours apart.
Age-Group Rules Geriatric Patients (age ge 65): A reduced initial dose of 120 mcg is recommended for all agitation severities.
Hepatic Impairment Dose reductions are recommended for patients with mild, moderate, or severe hepatic impairment; refer to the official label for specific starting doses (e.g., 60 mcg to 120 mcg).
Administration Conditions The film must be placed sublingually or buccally with clean, dry hands. Do not eat or drink for at least 15 minutes after sublingual administration or one hour after buccal administration.

These instructions define the precise usage protocol: the medicine is administered via a dissolving film, with the starting dose determined by the patient's condition. Follow-up doses are limited by frequency (at least two hours between doses) and a total maximum daily amount. These explicit directions define correct use and must be followed under the supervision of a healthcare provider, and the safety and effectiveness have not been established beyond 24 hours from the first dose.

Recent Clinical Evidence

Inflamyl: Recent Clinical Evidence

Research has explored the potential of Inflamyl in studies evaluating its effect on chronic pain. Clinical trials have investigated whether the drug is associated with changes in the central nervous system, and researchers have also studied its impact on nerve inflammation.


Key Efficacy Findings

Clinical trials have investigated the drug's potential effect on quality of life, with studies tracking its tolerability across various durations. In these trials, researchers tracked the onset of response in participants over various time points. The overall findings on efficacy have been mixed across different patient populations and study designs.

Combination Therapy Studies

Studies examined whether the combination of Inflamyl with other agents is associated with an effect on the complex symptoms of neuropathic pain. Some research included monotherapy arms for comparison of symptom severity, with researchers observing varied patient outcomes.


Safety and Trial Enrollment

Research evaluated the clinical data on the drug across various patient populations.

Enrollment Criteria Trial Observation
Exclusion in Trials Clinical trials typically excluded participants with pre-existing severe liver or kidney conditions.
Study Dosing Study protocols varied in the dose levels evaluated and included assessments of dose-response relationships.

Limitations of Current Evidence

Evidence remains limited on the long-term effects beyond the duration of the studies completed to date. It is not yet clear whether the drug maintains its observed effect over many years.

Key Studies & References

  1. 2019 exceptional surveillance of neuropathic pain in adults: pharmacological management in non-specialist settings (NICE guideline CG173)
  2. Pregabalin vs. gabapentin in the treatment of neuropathic pain: a comprehensive systematic review and meta-analysis of effectiveness and safety

Frequently Asked Questions (FAQ)

Common questions about Inflamyl (FAQ)


Q: How quickly should I expect to feel any effects from Inflamyl?

A: Official documents describe the pharmacokinetics of the medicine, which includes the time it takes for the active ingredient to reach its highest concentration in the body. Clinical studies examine the onset of response in participants over various time points, which provides data used to determine the expected timeframe for effects.


Q: Can Inflamyl cause fatigue or drowsiness?

A: Regulatory documents list the full range of undesirable effects observed in clinical settings, including effects on the nervous system. While common side effects include headache and dizziness, the complete list may also contain reports of fatigue or somnolence (drowsiness).


Q: Is it true that Inflamyl can interact with common over-the-counter cold medicines?

A: Official warnings advise against combining Inflamyl with other systemic non-aspirin nonsteroidal anti-inflammatory drugs (NSAIDs). Since many over-the-counter cold medicines contain an NSAID as an active ingredient, the formal restriction on co-administration applies to these products.


Q: Does Inflamyl carry any kind of 'Black Box Warning' from the FDA?

A: The official FDA prescribing information includes a Boxed Warning, which is a special regulatory communication about serious risks. This warning concerns the potential for serious cardiovascular thrombotic events, like heart attack and stroke, as well as serious, potentially fatal gastrointestinal events such as bleeding and ulceration.


Q: What are the main differences between Inflamyl and other similar anti-inflammatory drugs?

A: Inflamyl is categorized as an anthranilic acid derivative, a specific chemical group within the nonsteroidal anti-inflammatory drug (NSAID) class. Official descriptions note that its mechanism of action involves the selective modulation and inhibition of the NLRP3 inflammasome complex and the inhibition of the Caspase-1 enzyme. This targets an upstream regulatory step in the inflammation signaling pathway.


Q: Does Inflamyl treat the cause of the condition or just the symptoms?

A: According to official pharmacodynamic properties, Inflamyl works by interfering with the body's natural signaling process for pain and inflammation. It achieves its therapeutic effect by temporarily blocking the activity of enzymes responsible for producing prostaglandins, which are key chemical mediators of these symptoms.


Q: Why do some people experience trouble sleeping when taking Inflamyl?

A: Trouble sleeping, also referred to as insomnia, is sometimes reported as a potential adverse reaction of the medicine. This is listed within the full document of side effects as a possible effect on the nervous system.


Q: If I miss a dose of Inflamyl, what is the general recommendation?

A: Patient counseling information often states that the recommended approach is to take the dose as soon as it is remembered, unless it is almost time for the next scheduled dose. The guidance usually states that the missed dose is to be skipped to resume the normal schedule, and that two doses are not to be taken at the same time.


Q: Can taking Inflamyl affect the results of common lab tests, like blood work?

A: Regulatory documents include sections on drug-laboratory test interactions. This information describes the potential for Inflamyl to interfere with the results of certain common lab tests, such as specific blood work for bile metabolites or certain pregnancy tests.


Q: Is Inflamyl addictive or habit-forming?

A: According to the official drug information sections on abuse and dependence, Inflamyl is typically described as not associated with abuse potential. It is not designated as an addictive or habit-forming medicine.


Q: What is the shelf life or typical storage condition for Inflamyl?

A: Regulatory storage requirements state that the medicine must be kept in its original packaging, protected from light and moisture, and stored at Controlled Room Temperature (20 C to 25 C). The official shelf life, which is the time until the product is considered expired, is determined by the manufacturer and is displayed on the product packaging.


Q: Are there any specific safety rules listed for driving or operating machinery while taking Inflamyl?

A: The official warning is included because the medicine may cause adverse effects like dizziness, so the information is provided to help individuals be aware of how they react before driving or operating complex machinery.


Q: Can Inflamyl make a person more sensitive to sun exposure?

A: The full list of adverse reaction reports, found in official documentation, may include descriptions of photosensitivity. Photosensitivity refers to an increased sensitivity to sun exposure which can lead to a more severe skin reaction than normal.


Q: Is it necessary to take Inflamyl with food, or can it be taken on an empty stomach?

A: Regulatory directions for the oral capsule form often include a recommendation regarding food intake. The medicine may be taken with food or milk, which is often suggested to potentially reduce the occurrence of gastrointestinal effects.


Q: Is there a generic version of Inflamyl available?

A: Inflamyl is the brand name for the active ingredient Mefenamic Acid. Official drug documents indicate that regulatory agencies have approved the generic version of this medicine, meaning the generic form is available.


Q: What is the role of Inflamyl in managing conditions like arthritis or back pain?

A: Official regulatory documents describe the approved indications of Inflamyl as the short-term management of mild-to-moderate pain and the relief of menstrual cramps (dysmenorrhea). The official approved uses are specifically defined and do not always include specific chronic pain conditions like arthritis or general back pain.


Q: How long does Inflamyl typically stay in your system after the last dose?

A: Official regulatory information on the drug's pharmacokinetic properties details how the body processes and clears the medicine. This includes data on the medicine’s half-life, which is the time it takes for the amount of active ingredient in the body to be reduced by half.


Q: What happens if I stop taking Inflamyl suddenly?

A: As Inflamyl is approved only for acute, short-term use, regulatory documents generally do not note expected withdrawal effects upon cessation. However, it is expected that the symptoms for which the medicine was being taken may return after the treatment course is finished.


Q: Can Inflamyl be taken at the same time as antacids?

A: Official warnings describe that antacids containing Magnesium Hydroxide can significantly increase the absorption rate of Inflamyl in the body. Regulatory documents detail that a separation of administration by at least two to three hours is typically required to help prevent this altered absorption.


Q: Do the official patient leaflets mention specific symptoms that require immediate medical attention?

A: Yes, the official patient leaflets list specific symptoms associated with the most serious documented risks. These symptoms may include signs of bleeding, such as black or tarry stools, or signs of cardiovascular events, like chest pain or slurred speech, and are noted as requiring immediate attention.


Q: Is Inflamyl generally a non-sedating medication?

A: Inflamyl is not generally categorized as a sedating medication. However, the official safety information does list dizziness as a common nervous system side effect, and the complete adverse reaction profile may include reports of drowsiness (somnolence).


Q: Are there different brand names for the same active ingredient as Inflamyl?

A: The active ingredient in Inflamyl is Mefenamic Acid. This active ingredient is approved and marketed under multiple different brand names across various regions globally, not only under the name Inflamyl.


Q: Is the research for Inflamyl considered to be high-quality (e.g., randomized controlled trials)?

A: Official documents describing the clinical evidence detail the types of studies performed to support the drug's approval and efficacy. This can include descriptions of randomized, double-blind, and placebo-controlled trials.


Q: Does Inflamyl have any known psychiatric or mood-related side effects?

A: The comprehensive list of documented adverse reactions includes reports classified as psychiatric disorders. These reports may describe effects such as mood disturbances, confusion, or hallucinations, although these are typically noted as rare occurrences.


Q: Can Inflamyl cause weight gain or weight loss?

A: Official regulatory documents describing side effects include those related to metabolism and nutrition. The medicine has been associated with effects such as fluid retention (edema), which is documented as a possible effect that may result in a change in body weight.


Q: Is Inflamyl a controlled substance in any region?

A: According to official government classification, Inflamyl is listed as a non-scheduled medication under the Controlled Substances Act. This means the medicine is not designated as having potential for abuse or dependency in the same manner as other strictly controlled substances.


Q: What is the general expectation for improvement when using Inflamyl for a chronic condition?

A: Official regulatory approval for Inflamyl is strictly limited to acute, short-term use for specific conditions. Regulatory documents note that the existing evidence remains limited regarding the drug's effects and long-term safety profile when used continuously for chronic conditions.

How should Inflamyl be stored and disposed of?

How to Store and Dispose of Inflamyl (Mefenamic Acid)

Storage and disposal of Inflamyl (Mefenamic Acid) must strictly follow official regulatory requirements to maintain product stability and ensure environmental safety.

Storage Requirements

  • Temperature: Store at Controlled Room Temperature (CRT), defined as 20 C to 25 C (68 F to 77 F). Do not store above 30 C.
  • Protection: The medicine must be protected from light and moisture.
  • Packaging: Keep the product in the original package.
  • Safety: The medicine must be stored out of the sight and reach of children.

Disposal Instructions

Medicines should not be disposed of via wastewater or household waste. Consult a pharmacist for instructions on how to properly throw away unused or expired Inflamyl to comply with local regulations.

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

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