Shuton

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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 Shuton

Quick Facts: Shuton (Mefenamic Acid)

Property Description
Active Ingredient Mefenamic Acid
Form Oral Capsule or Tablet
Pharmacological Class Nonsteroidal Anti-inflammatory Drug (NSAID)
General Purpose Analgesic, Antipyretic, and Anti-inflammatory
Origin Synthetic Compound
Status Prescription-only (Rx)

Shuton: Definition and Classification as an NSAID

Shuton is a trademarked medicinal product containing Mefenamic Acid (INN) as its sole active ingredient, and it is typically classified as a prescription-only medication. The active compound, Mefenamic Acid, is a synthetic compound derived from anthranilic acid, which places it within the specific fenamate chemical subclass of medicines. The drug is classified as a Nonsteroidal Anti-inflammatory Drug (NSAID), a pharmacological category that is recognized for its ability to address symptoms where pain, inflammation, and fever coincide.


Composition, Form, and General Purpose

Shuton is consistently formulated as an oral capsule or tablet for systemic absorption via the digestive tract. The product is a single-ingredient product, consisting of Mefenamic Acid combined with necessary solid pharmaceutical excipients (binders and fillers). This form provides a convenient method for internal relief.

The primary general purpose of Mefenamic Acid is to provide relief from acute discomfort by offering a multi-faceted approach: acting as an analgesic (pain reliever), an antipyretic (fever reducer), and an anti-inflammatory agent. This triple action is achieved by inhibiting the production of prostaglandins, which are the chemical messengers responsible for initiating these symptoms. The specific structure and established clinical profile of Mefenamic Acid differentiate it within the broader NSAID group, offering a recognized therapeutic option for managing pain and inflammation.

Regulatory References

  1. NIH MedlinePlus

What side effects are possible with Shuton?

Possible side effects and safety information

Shuton (Mefenamic Acid) is associated with a safety profile consistent with its Nonsteroidal Anti-inflammatory Drug (NSAID) classification, detailed within official regulatory labeling. These documents classify adverse reactions primarily by frequency and the System-Organ Classes (SOC) affected, including the Gastrointestinal, Cardiovascular, and Renal systems.

Documented Adverse Reactions and Safety Constraints

Serious, potentially fatal Cardiovascular (CV) thrombotic events, such as myocardial infarction and stroke, are documented risks. This risk may be heightened with the duration of use of the medicine. Likewise, serious Gastrointestinal (GI) events, including bleeding, ulceration, and perforation, can occur at any time during treatment, even without warning symptoms.

More common, documented adverse reactions often involve the GI system, such as diarrhea and dyspepsia. The occurrence of severe diarrhea or a skin rash may require the suspension of therapy as noted in regulatory texts. Other documented SOC effects include renal impairment, potential liver dysfunction, and serious, rare cutaneous reactions like Stevens-Johnson Syndrome (SJS).

Safety constraints are defined for specific populations and clinical contexts. Older adults face an increased frequency and severity of adverse reactions, particularly fatal GI events. The medicine is contraindicated in the third trimester of pregnancy due to the risk of premature closure of the fetal ductus arteriosus. Furthermore, it is officially restricted from use for peri-operative pain management following Coronary Artery Bypass Graft (CABG) surgery.

Overdose and Emergency Response

Overdose with Shuton (Mefenamic Acid) is associated with officially documented manifestations primarily involving the gastrointestinal and central nervous systems. Initial clinical signs commonly include nausea, vomiting, and epigastric pain. As described in regulatory labeling, more severe presentations may involve lethargy, drowsiness, and confusion, potentially escalating to seizures (convulsions) or coma. The official documents note that convulsions are a distinguishing feature of Mefenamic Acid overdose compared to certain other nonsteroidal anti-inflammatory drugs.

Life-threatening outcomes documented in the official overdose profile include acute kidney failure and serious gastrointestinal bleeding, ulceration, or perforation, which can be fatal.

Due to the risk of severe systemic toxicity, the regulatory mandate is to seek immediate medical attention for all suspected overdoses. Urgent help is required if the individual exhibits severe symptoms, such as an altered level of consciousness, a seizure, or difficulty breathing. No specific antidote is known for Mefenamic Acid. Management is strictly defined as symptomatic and supportive treatment, which may involve gastric emptying or the administration of activated charcoal. Procedures like hemodialysis are stated as unlikely to be beneficial.

Therapeutic Uses of Shuton

Quick Facts: Uses of Shuton

  • Chronic Conditions: Supports the management of high blood pressure (hypertension).
  • Fluid Management: Assists in the reduction of fluid retention (edema) linked to specific cardiac, liver, and kidney conditions.
  • Cardiac Support: Helps reduce the likelihood of hospitalization and supports long-term outcomes for certain patients with heart failure.
  • Hormone-Related: Indicated for the management of conditions involving excessive aldosterone (hyperaldosteronism).

Shuton is a prescription medication utilized to support the treatment of several cardiovascular and fluid-related conditions. In the context of cardiac health, Shuton is approved to help manage high blood pressure, which may assist in mitigating the risk of serious events such as stroke or heart attack. It is also used in combination with other therapeutic agents to support the care of certain patients who have heart failure, helping to reduce the incidence of hospital admissions related to the condition.

Furthermore, Shuton assists in managing fluid retention, known as edema, when it is associated with specific underlying medical issues like congestive heart failure, nephrotic syndrome (a kidney disorder), or cirrhosis of the liver. The medication is also an option for individuals with high levels of aldosterone hormone (hyperaldosteronism).

Eligibility and Restrictions for Use

Official Eligibility and Contraindications for Shuton (Mefenamic Acid)

Eligibility for Shuton, a Nonsteroidal Anti-inflammatory Drug (NSAID), is strictly defined by regulatory authorities to minimize serious risks. The medicine is primarily approved for adults and adolescents aged 14 years and older for short-term use. Its use is contraindicated in several high-risk populations.

Absolute exclusions apply to patients with known hypersensitivity to Mefenamic Acid, Aspirin, or other NSAIDs. Shuton is also prohibited for individuals with active peptic ulceration, a history of GI bleeding related to prior NSAID use, or active Inflammatory Bowel Disease. Use is strictly contraindicated in the setting of Coronary Artery Bypass Graft (CABG) surgery and for patients with severe hepatic, renal, or heart failure.

Use is not recommended in the third trimester of pregnancy (contraindicated) or by nursing mothers. Older adults (mathbfge 65 years) must use the medication with extreme caution due to increased risks. Patients with established cardiovascular disease or mild to moderate organ impairment are only eligible under conditions of careful regulatory monitoring.

What should I know about interactions with other medicines?

Interaction Map: Interactions with other medicines and products — official regulatory information for Shuton

Interaction scope

Category Description
Medicinal product categories with documented interactions Other systemic NSAIDs, Oral Anticoagulants, Antihypertensives (ACE inhibitors, ARBs), Diuretics, Anti-platelet Agents, SSRIs, Corticosteroids.
Specific interacting medicines (if explicitly listed) Warfarin, Lithium, Methotrexate, Mifepristone, low-dose Aspirin, Magnesium Hydroxide.
Mechanistic basis of interactions (only if stated in label) Pharmacodynamic Synergism (increased bleeding risk), Pharmacodynamic Antagonism (reduced drug efficacy), Metabolic Inhibition (via CYP2C9), Reduced Renal Clearance.
Timing-based interaction rules (if applicable) Must not be taken for 8–12 days following Mifepristone administration.
Population-specific interaction notes (if applicable) Elderly and volume-depleted patients face increased risk of renal impairment when combined with RAAS inhibitors or Diuretics.
Interaction-related restrictions Contraindicated in the setting of peri-operative CABG surgery. Contraindicated with Oral Anticoagulants without continuous monitoring.

Interaction classifications (high-level)

Classification Description
Interaction severity classification (as defined in official documents) Contraindicated, Avoided/Not Recommended, Clinically Significant Interaction (requiring monitoring or caution).
Regulatory basis (EMA / FDA / etc.) FDA Prescribing Information, SmPC (Summary of Product Characteristics), and National Drug Information Sources.
Interaction-context constraints (as defined in official documents) Combination with Alcohol may increase the risk of gastrointestinal bleeding and ulceration. May compromise the anti-platelet effect of low-dose Aspirin.

Resulting interaction structure

Official interaction statements:

  • Co-administration with Lithium causes an elevation of plasma levels due to reduced renal clearance.
  • The drug reduces the antihypertensive effect of ACE inhibitors and Diuretics (Pharmacodynamic Antagonism).
  • Magnesium Hydroxide antacids are documented to increase the rate and extent of mefenamic acid absorption.

Connection to the overall interaction profile (2–4 sentences): Regulatory documents define the product’s interaction structure primarily through Pharmacodynamic interactions that increase bleeding risk with anticoagulants, and Pharmacokinetic interactions that cause the accumulation of co-administered drugs like Lithium and Methotrexate due to reduced elimination. The profile establishes clear constraints, including mandatory contraindications and specific timing rules for certain therapeutic combinations.

Mechanism of Action

Mechanism of Action: Cyclooxygenase Inhibition and Signal Modulation

Mefenamic Acid operates as a non-selective, competitive inhibitor of the cyclooxygenase ( COX-1 and COX-2) enzymes. This molecular interaction interrupts the fundamental eicosanoid pathway by preventing the conversion of Arachidonic Acid into prostanoids. The resulting reduction in prostaglandins, key chemical mediators, leads to dual physiological modulation. Peripherally, the suppression of PGE2 prevents the sensitization of nociceptors, thereby modulating the afferent nociceptive signal transmission threshold. Centrally, PGE2 synthesis is inhibited within the hypothalamus, removing the pyrogenic signal and facilitating central thermal set-point adjustment. This non-selective mechanism also influences the synthesis of constitutive prostaglandins derived from COX-1, inherently affecting systems maintained by basal enzymatic activity.

Dosage and Administration Information

Administration and Dosage Instructions

Shuton is an oral capsule intended for daily use, which must be taken with food, preferably at a consistent time each day. The capsule may be swallowed whole, or, if necessary, the capsule's contents can be mixed onto one teaspoon (5 mL) of soft food, such as apple sauce, low-fat yogurt, or warm oatmeal, and must be consumed within one hour of preparation.

Dosing Schedules

Administration follows two distinct schedules, determined by the condition being managed:

  • Chronic Daily Dosing: The standard dose is 5 mg taken once daily.
  • Flare-up Dosing (12-Week Course): This structured course replaces the chronic dose when a flare-up occurs. The dosage is higher for the first 4 weeks, followed by a lower dose for the remaining 8 weeks.
Age Group Week 1–4 Dose Week 5–12 Dose
Adults and Pediatrics (14 years and older) 20 mg once daily 10 mg once daily
Pediatrics (8-13 years) Weight-based (see product information) Weight-based (see product information)

If a dose is missed by more than 6 hours, the protocol is to skip the missed dose entirely and resume the next scheduled dose; patients must not take two doses at the same time.

Before starting treatment, females of reproductive potential are required to obtain a negative pregnancy test. Dosage must be reduced if adverse reactions occur. The drug must not be taken with grapefruit, pomelo, or any juices containing these fruits.

Recent Clinical Evidence

Shuton: Recent Clinical Evidence

Evidence for Acute Discomfort: Pain, Inflammation, and Fever

The research structure for Shuton (Mefenamic Acid) primarily consists of short-term Randomized Controlled Trials (RCTs) that explored outcomes related to acute pain, inflammation, and fever. Study participants were observed in controlled settings where researchers monitored outcomes related to physical discomfort by tracking measurements of pain intensity, body temperature, and the time until symptom measurements changed. Findings describe patterns observed in these studies, which provide insight into short-term changes. However, follow-up durations were limited, and long-term effects for repeated use are not fully established.


Evidence Structure for Cardiovascular and Fluid Conditions

For conditions such as high blood pressure and heart failure, the evidence structure relies on observational studies and post-marketing reports related to the drug's class (NSAIDs) rather than primary treatment trials. Research explored the patterns of blood pressure measurements and the incidence of cardiovascular events in populations using the NSAID class. Post-marketing surveillance described patterns where cardiovascular events was associated with the NSAID drug class in some populations. Evidence is limited for Shuton in the context of hypertension or cardiac health, and the focus is on patterns of association rather than therapeutic benefit.


What is Still Uncertain About Shuton Research

A key limitation across the evidence base is that follow-up durations were limited, especially for chronic or long-term outcomes. While acute effects were studied for temporary relief, the long-term impact of continued use is not fully established. Furthermore, while many findings are drawn from the general NSAID class, comparative evidence is lacking to definitively separate Shuton’s profile from data for other drugs in the class. More research is needed to better understand the observed effects when Shuton was observed in specific special populations with existing health issues.

Frequently Asked Questions (FAQ)

Common questions about Shuton (FAQ)


Q: Is extreme tiredness or fatigue a reported side effect of Shuton?

A: Regulatory documents state that drowsiness is a reported adverse reaction related to the Central Nervous System (CNS) effects of the medication. Reports also note that unusual tiredness or weakness may be a symptom related to rare, more serious adverse events like anemia or kidney damage. Regulatory materials advise consulting a healthcare professional regarding symptoms that persist or cause concern.


Q: Is weight gain or weight loss mentioned as a possible side effect in the regulatory information for Shuton?

A: The official prescribing information for Shuton reports weight gain and weight loss as possible adverse reactions. Additionally, regulatory warnings list unusual weight gain and swelling as a potential symptom of serious conditions, such as heart failure, which can be associated with the drug’s class.


Q: What is the official warning regarding the effect of Shuton on mental clarity or the ability to drive?

A: Adverse reaction reports mention effects like dizziness, drowsiness, headache, and nervousness. Because of these possible effects on the Central Nervous System, official documentation cautions that this medicine may impair the ability to perform tasks requiring full alertness, such as driving or operating heavy machinery.


Q: What warnings exist about the use of Shuton in patients with pre-existing heart conditions?

A: Official warnings state that patients who have established cardiovascular disease or risk factors face an increased risk of serious cardiovascular events, such as heart attack or stroke. The drug is strictly contraindicated (prohibited) for use immediately before or after Coronary Artery Bypass Graft (CABG) surgery.


Q: What is the significance of the “Black Box Warning” (if any) for Shuton?

A: Shuton, as a Nonsteroidal Anti-inflammatory Drug (NSAID), carries the FDA's most serious warning, often referred to as a Black Box Warning. This warning highlights the risk of two serious, potentially fatal events: cardiovascular thrombotic events (like heart attack or stroke) and serious gastrointestinal bleeding and ulceration.


Q: Is there a generic alternative for Shuton currently available?

A: Yes, Shuton's active ingredient is Mefenamic Acid. The active compound is commonly available as a generic prescription drug, which is listed in official government drug registers.


Q: Is it necessary to take Shuton at the exact same time every day?

A: The official instructions advise taking the medicine at a consistent time each day. This practice helps maintain a stable level of the drug in the body, which is the regulatory goal of interval-based dosing (e.g., 'once daily' or 'every six hours').


Q: Can individuals with a history of seizures safely use Shuton?

A: The official precautions advise that Mefenamic Acid should be avoided in epileptic subjects (people who have seizures). Additionally, regulatory documents list seizures as a symptom associated with drug overdosage.


Q: Is Shuton intended for short-term use or long-term management of a condition?

A: According to the official prescribing information, the drug is indicated for short-term use only. Its use is often limited to specific durations, such as not more than 7 days for mild-to-moderate pain.


Q: How does Shuton work at a high level in the body?

A: The drug is a nonsteroidal agent that works by inhibiting the production of prostaglandins. These prostaglandins are chemical messengers that are responsible for initiating and signaling pain, inflammation, and fever in the body.


Q: How is the purpose of Shuton described in the official FDA information?

A: The FDA labeling describes the purpose as providing relief of mild to moderate pain and for the treatment of specific gynecological conditions, such as dysmenorrhea (menstrual cramps).


Q: What long-term research data is available for Shuton's effects?

A: The official indication is for short-term use, which reflects the limited availability of long-term safety and efficacy data. Regulatory warnings emphasize that the serious risks (cardiovascular and gastrointestinal) may be heightened with the duration of use.


Q: Are there official warnings about combining Shuton with certain types of antidepressants or anxiety medications?

A: Warnings specifically include interactions with Selective Serotonin Reuptake Inhibitors (SSRIs), which are a class of antidepressant. This combination is noted because it increases the risk of serious gastrointestinal bleeding.


Q: Is there a known interaction between Shuton and birth control medications?

A: Regulatory warnings indicate a potential interaction exists with certain oral contraceptives, specifically those containing the ingredient drospirenone. This combination may increase the risk of elevated potassium levels, particularly in high-risk patients.


Q: How does the half-life of Shuton compare to similar medicines?

A: The regulatory information on the drug's pharmacokinetics states that the elimination half-life of Shuton (Mefenamic Acid) is approximately two to four hours. The half-life describes the time it takes for half of the drug to be eliminated from the body.


Q: Where can I report a side effect I believe is related to Shuton?

A: Government bodies maintain a system for collecting post-marketing safety data. In the United States, patients and healthcare providers can use the FDA's MedWatch program to officially report any side effect believed to be related to the medication.

How should Shuton be stored and disposed of?

How to Store and Dispose of Shuton?

Storage

To maintain the medication's effectiveness, store Shuton in its original container at room temperature, away from excessive heat, moisture, and direct light. Do not store the medication in a bathroom, as fluctuations in humidity and temperature can cause degradation. It is essential to keep all medications, including Shuton, out of sight and reach of children and pets, ideally in a locked cabinet or container.

Disposal

Dispose of expired or unused Shuton promptly to prevent accidental ingestion or misuse. The preferred method for disposal is through a drug take-back program or a permanent collection site, which may be available at local pharmacies or law enforcement agencies. If a take-back option is not readily accessible, do not flush Shuton down the toilet or pour it down a drain unless specifically instructed to do so by your healthcare provider or the accompanying patient information. For disposal in household trash, mix the uncrushed medication with an unappealing substance like used coffee grounds or cat litter, place the mixture in a sealed bag or container, and then discard it. Always scratch out all personal information on the prescription label before discarding the original packaging.

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

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