Micar

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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 Micar

What is Micar? A Structured Overview

Property Description
Active ingredient Piroxicam
Form Capsules, Tablets, Gel
Pharmacological class Nonsteroidal Anti-inflammatory Drug (NSAID)
General purpose Symptomatic relief of pain and inflammation
Origin Synthetic organic compound (Benzothiazine derivative)

Defining Micar: Substance and Pharmaceutical Class

Micar is a prescription medicine containing the active ingredient Piroxicam, which is fundamentally classified as a Nonsteroidal Anti-inflammatory Drug (NSAID). This preparation is a synthetic organic compound that requires medical authorization for use. The core component, Piroxicam, is categorized specifically within the oxicam class of NSAIDs, a classification associated with sustained therapeutic effects. This chemical structure places the drug in a group known for its potency and relatively long half-life, a key feature that distinguishes it from shorter-acting analgesics. The molecule itself is a derivative of benzothiazine, confirming its complex synthetic origin. Micar is typically positioned as an established option for adult patients requiring consistent management of painful inflammatory states.


Form and Function: Piroxicam's General Purpose

Micar's primary function is to provide symptomatic relief as an anti-inflammatory, analgesic, and antipyretic agent, helping to reduce swelling, relieve pain, and lower fever. Micar is typically encountered in multiple physical formats: primarily as hard gelatin capsules and tablets for oral administration, and also as a gel formulation for topical administration onto the skin. The NSAID classification applies to drugs addressing the cardinal signs of inflammation, relating to its general use for reducing pain and swelling. Piroxicam is utilized for providing sustained relief in situations such as musculoskeletal discomfort. The general therapeutic goal of the medicine is to offer functional relief from the discomfort associated with painful inflammatory states by broadly modulating the body's response to inflammation.

What side effects are possible with Micar?

Possible Side Effects and Safety Information

The official safety profile of Micar (Piroxicam) is primarily characterized by regulatory warnings concerning serious adverse events and specific systemic risks as documented by agencies like the FDA and EMA.


Serious Systemic Safety Concerns

The labeling includes warnings regarding the potential for serious cardiovascular thrombotic events, such as myocardial infarction (heart attack) and stroke, which can be fatal. This risk may increase with the duration of use.

Furthermore, Micar carries a risk of serious gastrointestinal events, including bleeding, ulceration, and perforation of the stomach or intestines, which can occur without warning symptoms at any time during treatment.

Rare but severe adverse reactions, known as Severe Cutaneous Adverse Reactions (SCARs), including Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), are also documented, with the highest risk often occurring early in therapy.


Frequency and Organ Systems Affected

Adverse reactions are formally classified by System-Organ Class and frequency tiers in regulatory texts. Common side effects typically involve the Gastrointestinal disorders (e.g., nausea, abdominal pain, constipation, flatulence) and the Nervous system disorders (e.g., headache, dizziness). Other systems affected include the Renal and urinary disorders, Blood and lymphatic system disorders, and Hepatobiliary disorders.


Population-Specific Restrictions

Official documents outline specific limitations. Micar is contraindicated for treating peri-operative pain in the setting of Coronary Artery Bypass Graft (CABG) surgery. Use is generally avoided in late pregnancy (after 20 weeks gestation). Older adults (geriatrics) are recognized as being at a significantly greater risk for serious gastrointestinal complications.

Overdose and Emergency Response

Suspected overdose with Micar (Piroxicam) requires immediate medical attention. Regulatory authorities mandate contacting emergency services or a Poison Control Center at once. Urgent medical help is specifically required if severe manifestations develop, such as difficulty breathing, sudden weakness, or any signs of internal bleeding (vomiting blood or passing black, tarry stools).

Documented presentations of an overdose typically involve gastrointestinal symptoms like nausea, vomiting, and abdominal pain, alongside Central Nervous System effects such as drowsiness, confusion, and severe headache. Serious, life-threatening outcomes are officially documented and include acute renal failure, significant gastrointestinal bleeding, convulsions (seizures), and a severe decrease in consciousness leading to coma or shock.

Overdose management is defined as purely symptomatic and supportive, as no specific antidote is known for Piroxicam toxicity. Treatment procedures may include administering activated charcoal and require intensive hospital observation with continuous monitoring of vital signs, blood and urine values, and cardiac function (ECG). A specific population note identifies patients with pre-existing kidney or liver disease as having an increased risk for serious effects or worsening of their condition following an overdose.

Therapeutic Uses of Micar

What Micar Treats: Main Uses and Benefits

Micar (Piroxicam) is commonly used to help with symptoms that interfere with daily functioning in conditions involving episodic or fluctuating manifestations. It is applied across therapeutic domains where additional symptomatic support is needed, and is used within domains involving inflammatory or irritative processes. The application of the medication includes use for long-term conditions like rheumatoid arthritis, osteoarthritis, and ankylosing spondylitis, as well as in acute situations such as gouty arthritis and primary dysmenorrhea.


The medication is relevant for easing symptom clusters that may become intense or disruptive, particularly localized swelling, joint stiffness, and pain associated with inflammation. It provides supportive relief during phases when symptoms become more noticeable, offering a benefit that contributes to easing the overall symptom load and supports patients during episodes of heightened discomfort.

“Micar is considered relevant for managing symptoms that interfere with daily comfort, especially when inflammatory manifestations escalate temporarily.”


Quick Fact: Relief for Inflammation and Stiffness

Quick Fact: Relief for Inflammation and Stiffness – Micar is used to address pronounced symptoms related to inflammatory or irritative states, provides supportive relief when symptoms interfere with routine activities during periods of acute or recurrent discomfort.

Regulatory References

  1. Health Canada product monograph guidance

Eligibility and Restrictions for Use

Micar (Piroxicam) is generally reserved for adults diagnosed with conditions such as osteoarthritis and rheumatoid arthritis, but its use is strictly regulated by official eligibility criteria.


Absolute Contraindications

Official regulatory labeling dictates that Micar must not be used in the following groups:

  • Patients with a history of gastrointestinal ulceration, bleeding, or perforation, or those with active peptic ulcers.
  • Individuals with a known hypersensitivity to piroxicam, aspirin, or any other NSAID.
  • Patients in the setting of, or immediately following, coronary artery bypass graft (CABG) surgery.
  • Patients with severe heart failure, severe renal failure, or severe hepatic failure.

Age-Based and Special Population Rules

Population Eligibility Status (as per label)
Pediatric Dosage and indications have not been established; use is not recommended in children.
Older Adults (70+) Use requires caution due to increased GI risk; administration to patients over 80 years old should be avoided.
Pregnancy Contraindicated from 30 weeks gestation onward. Limited use is permitted only between 20 and 30 weeks gestation under strict monitoring.
Lactation Not recommended for use in nursing mothers as clinical safety has not been established.

Eligibility is also limited for patients with impaired organ function or certain metabolic issues, such as poor CYP2C9 metabolizers, who require caution and dose adjustment. This structure ensures Micar is used only in populations where the risk profile is deemed acceptable by regulatory authorities.

What should I know about interactions with other medicines?

Interactions with other medicines and products — official regulatory information for Micar (Piroxicam)

Interaction Scope

Classification Interacting Agents and Conditions Official Outcome Statement
Contraindicated Combinations Other Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and Oral Anticoagulants (e.g., Warfarin); use in the setting of CABG surgery. Combination increases risk of serious gastrointestinal or non-GI bleeding; use around CABG is prohibited.
Pharmacokinetic Profile Primarily metabolized by CYP2C9. CYP2C9 poor metabolizers may have reduced clearance, leading to abnormally high systemic plasma levels of Micar.
Exposure Modification Lithium and Methotrexate Co-administration can increase serum concentration of both Lithium and Methotrexate, primarily through reduced renal clearance.
Pharmacodynamic Effects Antihypertensive Agents (ACE Inhibitors, ARBs, Beta-Blockers) and Diuretics Micar may diminish the antihypertensive effect and reduce the natriuretic effect of these medicines.
Additive Risk Antiplatelet agents (e.g., low-dose Aspirin), SSRIs, Oral Corticosteroids, and Alcohol (Ethanol) Concomitant use is associated with a heightened risk of serious gastrointestinal bleeding.
Population-Specific Note Elderly, volume-depleted, or renal impairment with ACE Inhibitors/ARBs Concomitant use in these specific populations may result in the deterioration of renal function.

Connection to the overall interaction profile: The official regulatory documents establish the interaction structure of Micar through strict contraindications with agents that substantially increase bleeding risk and through documented pharmacokinetic interference related to the CYP2C9 metabolic pathway. The profile also highlights pharmacodynamic antagonism that can reduce the efficacy of cardiovascular and diuretic agents and identifies specific populations, such as the elderly or those with renal issues, where certain interactions may carry a greater documented risk.

Mechanism of Action

Micar's mechanism is based on the reversible, non-selective inhibition of the Cyclooxygenase-1 ( COX-1) and Cyclooxygenase-2 ( COX-2) enzymes. The active ingredient functions as a competitive antagonist to the substrate, arachidonic acid, thereby suppressing the entire prostanoid synthesis pathway. This molecular action modulates the initial step in the cascade that generates powerful physiological mediators, resulting in an altered chemical response at the cellular level.

The suppression of the prostanoid pathway, specifically the reduction of prostaglandin E2 ( PGE2) concentration, initiates a cascade of systemic effects. Peripherally, this biological change results in the limitation of increased local vascular permeability and modulates the prostaglandin-mediated sensitization threshold of nociceptors (pain-sensing neurons). Centrally, the mechanism involves the regulation of PGE2 synthesis within the hypothalamus, which governs the body's thermoregulatory set point. The mechanism is constrained to modulating these chemical mediators and does not modify the underlying pathogenesis of chronic conditions.

Dosage and Administration Information

How to Use Micar (Piroxicam): Official Administration Guidelines

This section outlines instructions for the administration and dosing of Micar based on standardized pharmaceutical information and product documentation.


Administration and Dosing Principle

Micar is intended for oral administration, typically available as 10 mg or 20 mg capsules or tablets. The drug’s long duration of action establishes a standard maintenance dose of 20 mg taken once daily for chronic conditions like rheumatoid and osteoarthritis. Alternatively, the total daily dose may be divided, such as 10 mg twice per day, but the maximum maintenance dose of 20 mg must not be exceeded.


Usage for Acute and Specific Scenarios

For acute episodes such as a flare-up of gouty arthritis, higher starting doses are sometimes used, such as 40 mg daily for a short, fixed duration (4 to 6 days), before discontinuation or reduction to the standard maintenance dose. This elevated dose is strictly for short-term initiation, and the lowest effective dosage for the shortest duration is the governing principle for all treatment courses. Because the full effect is not observed immediately, the therapeutic benefit should not be assessed until after the first two weeks of continuous use.


Contextual Instructions

Oral forms should be taken preferably with or immediately after food or with a large glass of water to support proper ingestion. Capsules must be swallowed whole and should not be crushed or chewed. Dose adjustments may be a necessary consideration for specific populations, including patients with impaired renal function or those identified as poor metabolizers of the drug (CYP2C9), necessitating lower starting doses and closer monitoring.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Micar

This section outlines the structure of the official research evidence for Micar (Piroxicam), describing the types of studies conducted and the scope of their findings, based on regulatory and scientific sources.


Evidence for Use in Osteoarthritis (OA)

Research for Piroxicam (Micar) in studies focusing on symptoms associated with osteoarthritis was conducted using Randomized Controlled Trials (RCTs). These studies were used in research exploring how symptoms change over time and often compared Micar against other Nonsteroidal Anti-inflammatory Drugs (NSAIDs) or an inactive placebo. The studies monitored patient-reported measures for outcomes such as pain intensity, joint stiffness, and measures reflecting daily functioning. Findings described that Micar's measurements of pain and functional scores were within the range of patterns reported for other traditional NSAIDs included in the reviews. The evidence primarily explores symptom measures and follow-up durations were typically short-term, spanning up to twelve weeks.

Evidence for Use in Rheumatoid Arthritis (RA)

Piroxicam (Micar) was evaluated in studies focusing on the symptoms associated with rheumatoid arthritis, through a body of evidence that includes RCTs and subsequent Systematic Reviews. Research examined outcomes related to systemic or functional imbalance, such as the number of painful and swollen joints, the duration of morning stiffness, and measurements of overall patient assessment. Pooled data show patterns related to articular swelling and overall patient assessment that were generally consistent with the findings reported for other traditional NSAIDs. Information regarding long-term outcomes is not well characterized based on the highest quality comparative data.


Research Gaps and Areas of Uncertainty

A main limitation across all indications is that the existing research primarily explores measures related to inflammatory or irritative states. Comparative evidence is lacking for the effects of Micar versus modern therapeutic agents. Furthermore, the existing studies provide limited insight into how the medicine may affect disease progression over many years, as follow-up durations were limited in the high-quality comparative trials. Research has consistently included and monitored subgroups of older adults/geriatric patients with arthritis, but data for certain groups, such as pediatric populations, remain insufficient in the formal trial setting.

Key Studies & References Health Canada Product Monograph for Piroxicam (Capsules)

Frequently Asked Questions (FAQ)

Common questions about Micar (FAQ)

Q: What kind of studies support the use of Micar?

A: Research supporting the use of Micar, according to regulatory documents, primarily consists of Randomized Controlled Trials (RCTs). These trials were used in research to evaluate the drug's effect on symptoms for conditions like osteoarthritis and rheumatoid arthritis. In these studies, Micar was compared against either an inactive substance or other traditional Nonsteroidal Anti-inflammatory Drugs (NSAIDs).

Q: How long does it typically take for Micar to start working?

A: Official product information indicates that the full therapeutic benefit of Micar should not be assessed until after the first two weeks of continuous use. This is because it takes approximately 7 to 12 days for the amount of medicine in the blood to reach a stable level, known as the steady-state concentration.

Q: Why is Micar sometimes prescribed instead of Drug X (a similar medicine)?

A: Micar belongs to a specific chemical class of NSAIDs known as the oxicams. One feature described in official documents is its prolonged plasma half-life, which differs from some other NSAIDs. This characteristic supports the ability for Micar to be administered once daily for managing chronic conditions.

Q: What happens if Micar is taken for a longer time than planned?

A: The regulatory label indicates that the potential risk of serious side effects may increase with the duration of use. These risks include serious cardiovascular thrombotic events (such as heart attack or stroke) and serious gastrointestinal events, including internal bleeding or ulceration.

Q: Why do official documents mention Micar can be used for multiple conditions?

A: Micar is officially indicated for the relief of signs and symptoms of common conditions like osteoarthritis and rheumatoid arthritis. It is also authorized for use in other inflammatory conditions, such as the short-term management of acute gouty arthritis, as described in the official dosing and administration sections.

Q: Is Micar an addictive medicine?

A: Micar is chemically classified as a Nonsteroidal Anti-inflammatory Drug (NSAID). The official labeling, as reviewed by regulatory bodies, does not list Micar as a controlled substance that carries a risk of dependence or addiction.

Q: Why are there warnings about driving or operating machinery while on Micar?

A: Official safety information includes common adverse reactions affecting the nervous system, such as dizziness and drowsiness (somnolence). The regulatory label includes advice for patients to use caution when performing activities that require alertness if they experience these effects.

Q: Does Micar cause any weight changes (gain or loss)?

A: The safety profile notes that Micar, like other NSAIDs, can cause edema, which is the medical term for fluid retention. This condition is sometimes associated with unusual weight gain. The regulatory label identifies that patients with certain conditions, like heart failure, are generally monitored for signs of fluid retention.

Q: Is it a requirement to have regular blood tests while taking Micar?

A: Regulatory documents indicate that monitoring of certain blood parameters is often necessary. For instance, renal function (kidney function) should be monitored in specific patient populations, and blood cell counts (hemoglobin or hematocrit) should be checked in patients showing signs of anemia.

Q: What information is publicly available about how Micar affects different age groups?

A: Official documentation contains specific guidance regarding use in the older adult (geriatric) population. This population is recognized as having a significantly greater risk for serious gastrointestinal complications. Conversely, information regarding safety and efficacy in pediatric populations is officially described as insufficient.

Q: Is it normal to feel a mild headache when starting Micar?

A: Official documents list headache as one of the most common adverse reactions reported in clinical trials involving Micar. Experiencing this effect is a documented possibility of using the medicine.

Q: Does Micar cause fatigue or affect energy levels?

A: While not always listed as a common side effect, official reports note that Micar can cause drowsiness (somnolence). Additionally, fatigue is listed among the possible effects associated with an overdosage of the drug.

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

A: Clinical trials described in the regulatory label show that Micar provided symptomatic relief for conditions such as osteoarthritis and rheumatoid arthritis. A placebo is an inactive substance used for comparison; the placebo did not show the same pattern of results on measurements like pain intensity and functional scores.

Q: Does Micar affect blood pressure readings?

A: The regulatory label indicates that Micar, like other NSAIDs, can lead to the new onset of high blood pressure (hypertension) or the worsening of pre-existing high blood pressure. Patients using the medicine are generally advised to have their blood pressure monitored.

Q: How quickly do the effects of Micar wear off after the last dose?

A: Micar is described in pharmacokinetics sections of the label as having a long presence in the body. The average time it takes for the concentration of Micar in the blood to be reduced by half, known as the elimination half-life, is approximately 50 hours in adults.

Q: What are the high-level themes of research into Micar's safety?

A: The high-level safety themes reflected in the official regulatory warnings focus on the potential for three major risks. These include serious cardiovascular thrombotic events, serious gastrointestinal events (like bleeding and ulceration), and serious severe cutaneous (skin) adverse reactions.

Q: Is Micar known to cause any emotional or mood changes?

A: Adverse reaction reports and postmarketing data for the drug have included documented cases of mood alterations in the psychiatric disorders category. These reported changes include symptoms such as anxiety, confusion, and depression.

Q: Is Micar available without a prescription?

A: Official documentation consistently identifies Micar as a prescription medicine (Rx only). This means medical authorization from a qualified healthcare professional is required for its use.

Q: Is it okay to store Micar in a bathroom cabinet?

A: Official storage instructions require Micar to be kept at controlled room temperature and protected from moisture and excessive heat. The container should be stored out of the sight and reach of children, in a place that respects these conditions.

Q: What should I do if I forget to take my Micar dose?

A: General guidance provided in patient counseling information suggests that taking a double or extra dose to compensate for a missed dose is not recommended. Instead, treatment should typically be continued with the next regularly scheduled dose.

Q: What is the maximum duration Micar can be used according to research?

A: While the length of treatment is individualized, regulatory texts emphasize that Micar should be used at the minimum effective dose for the shortest duration necessary to control symptoms. Official documents state that the benefit and safety of continued treatment are intended to be reassessed periodically.

How should Micar be stored and disposed of?

How to Store and Dispose of Micar (Piroxicam)

The storage and disposal of Micar (Piroxicam) must strictly adhere to regulatory guidelines to ensure product quality and safety.

Storage Requirements

Condition Regulatory Requirement
Temperature Store at controlled room temperature, typically between 20°C and 25°C (68°F and 77°F).
Protection The product must be protected from moisture and excessive heat.
Container Keep Micar in the container provided by the manufacturer.
Child Safety Store the medicine out of the sight and reach of children.

Disposal Instructions

Official disposal procedures mandate that unused or expired Piroxicam must not be discarded with household waste or thrown into wastewater. Instead, the product must be disposed of according to local requirements, typically through a designated pharmaceutical waste or drug take-back program. The topical gel formulation should not be used if visible signs of deterioration are observed.

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

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