Idium

Quick links to important sections

Idium

Treatment option:

Medically reviewed

Marina Burgos

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 Idium

Idium is a brand name for the prescription medication whose active ingredient is indomethacin. Indomethacin is classified as a Nonsteroidal Anti-inflammatory Drug (NSAID), a group of medications widely recognized for their powerful effects in managing pain, reducing fever, and decreasing inflammation.

Quick Facts

Property Description
Active Ingredient Indomethacin
Pharmacological Class Nonsteroidal Anti-inflammatory Drug (NSAID)
Rx Status Prescription Only
Core Therapeutic Effects Pain relief, Inflammation reduction, Fever reduction
Essential Status Listed on the WHO Model List of Essential Medicines

As an NSAID, indomethacin belongs chemically to the indole-acetic acid derivatives, a structure supported by its chemical profile. Its core function is to reduce the production of specific substances in the body that trigger pain and swelling, making it effective for moderate-to-severe inflammatory conditions.

Indomethacin is known in clinical practice for being a potent medication, often used when other anti-inflammatory drugs may be less effective. Indomethacin is used to treat the discomfort and swelling associated with various types of arthritis, gout, and other musculoskeletal pain.

A distinctive feature of the drug is its availability in multiple forms, including standard oral capsules, extended-release capsules, and suppositories. The drug was first approved for medical use in the United States in 1965.

Regulatory References

  1. WHO Model List of Essential Medicines

What side effects are possible with Idium?

Possible Side Effects and Safety Information

As an Nonsteroidal Anti-inflammatory Drug (NSAID), indomethacin's official safety profile, based on regulatory labeling, is organized around both commonly reported reactions and serious risks inherent to the drug class.

Serious Adverse Reactions and Safety Constraints

The regulatory documentation emphasizes the risk of Serious Cardiovascular Thrombotic Events, including myocardial infarction and stroke, which may be fatal. This risk may occur early in treatment and increase with duration of use. Furthermore, there is an associated risk of Serious Gastrointestinal (GI) Events, such as bleeding, ulceration, and perforation of the stomach or intestines, which can occur without warning symptoms.

Safety restrictions include a contraindication for use in patients with a history of aspirin or NSAID-induced asthma/hypersensitivity and for managing peri-operative pain following CABG surgery.

Common Adverse Reactions and Population Notes

The most frequently reported adverse reactions, categorized as Most Common (incidence ge 3%) in clinical trials, involve the Central Nervous System (CNS) and the GI system. These commonly listed effects include headache, dizziness, dyspepsia, and nausea. Other systems documented in the official labels include the renal, hepatic, and special senses (e.g., tinnitus).

Population-specific safety considerations state that older adults are at an increased possibility of experiencing adverse reactions, specifically a greater risk for serious GI events. Use is generally restricted or avoided during the late stages of pregnancy (from about 30 weeks gestation) due to potential fetal risks.

Overdose and Emergency Response

Overdose and When to Seek Help

Idium (loperamide) overdose is a serious medical emergency that has been associated with life-threatening cardiac adverse reactions, including QT/QTc interval prolongation, Torsades de Pointes, other ventricular arrhythmias, cardiac arrest, and death. These severe outcomes are primarily linked to the use of higher-than-recommended doses, often in cases of abuse or misuse.

Overdose symptoms may also include signs of opioid toxicity, such as severe Central Nervous System (CNS) depression, unresponsiveness, slow and shallow breathing (respiratory depression), muscular hypertonia, and paralytic ileus. Symptoms of overdose, particularly the cardiac effects, may be delayed.

Required Emergency Action

IMMEDIATE MEDICAL ATTENTION IS REQUIRED if an overdose is suspected or if the patient exhibits any of the following severe symptoms:

  • Fainting or loss of consciousness.
  • Unresponsiveness (the person is hard to wake up or doesn't react normally).
  • Rapid, pounding, or irregular heartbeat.
  • Difficulty breathing or slow, shallow breathing.

Due to the prolonged effect of Idium, close monitoring by medical professionals is necessary for at least 48 hours following suspected overdose, even if symptoms appear to resolve initially. Treatment often involves supportive care, and Naloxone may be administered to reverse the opioid-related CNS and respiratory effects.

Therapeutic Uses of Idium

What Idium Treats: Main Uses and Benefits

Idium (indomethacin) is generally used to address symptoms related to physical discomfort and inflammatory states across a range of conditions. It offers supportive therapeutic benefit by helping to ease the overall symptom load associated with acute and chronic manifestations.

The medication is commonly used across conditions presenting with recurrent or episodic manifestations, including moderate-to-severe Rheumatoid Arthritis, Osteoarthritis, Ankylosing Spondylitis, acute gouty arthritis, and localized inflammation in bursitis and tendinitis. This supportive relief assists with managing symptoms that interfere with daily comfort.

“The treatment is relevant in contexts marked by increased discomfort and is commonly used when short-term symptomatic assistance is needed.”

This medication is also applied in addressing highly specific clinical scenarios: certain severe headache disorders that show a unique symptomatic response to this agent, and it is relevant in specific contexts for the supportive management of Patent Ductus Arteriosus (PDA) in premature infants.

Quick Fact: Support for Acute Symptom Manifestations
Primary Symptom Domain Inflammation, Pain, and Stiffness
Symptom Severity Focus Moderate-to-Severe, Acute Episodes
Primary Patient Benefit Focus Easing overall symptom load and distress
Main Therapeutic Use Context Management of acute gout flares

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Contraindicated Populations (Absolute Non-Eligibility)

Idium (indomethacin) is explicitly prohibited for patients with a known hypersensitivity to the medicine or who have experienced allergic-type reactions, such as asthma or hives, after taking aspirin or other Nonsteroidal Anti-inflammatory Drugs (NSAIDs). It must also not be used for managing peri-operative pain following coronary artery bypass graft (CABG) surgery.

Condition-Based Restrictions

Use is strictly avoided or requires significant restriction in patients with severe uncontrolled heart failure, advanced renal disease, or a history of active gastrointestinal bleeding or peptic ulcer disease. Conditional use requires caution for individuals with pre-existing hypertension, hepatic impairment, or certain neurological conditions like Parkinson's disease.

Age and Gestational Stage

The medicine is contraindicated in women who are 30 weeks gestation or later in pregnancy. For chronic conditions, the safety and efficacy of Idium have not been established in children under 14 years of age. Older adults are eligible but require careful monitoring due to a heightened risk of gastrointestinal and renal adverse effects, a consideration explicitly documented in regulatory labeling.

What should I know about interactions with other medicines?

The official interaction profile for Idium (indomethacin) is strictly defined by regulatory documentation, centering on established Pharmacodynamic antagonism and Pharmacokinetic alteration pathways.

Interaction Restrictions

Regulatory bodies strongly not recommend or prohibit the co-administration of Idium with Diflunisal, as this combination increases indomethacin plasma levels and decreases its renal clearance, which is associated with severe gastrointestinal events. Concomitant use with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and analgesic doses of Aspirin is similarly not recommended due to the significantly increased possibility of gastrointestinal toxicity with little or no added therapeutic benefit.


Clinically Significant Interactions

Idium may diminish the antihypertensive effect of numerous medicines, including ACE Inhibitors and ARBs, and can reduce the natriuretic effect of Diuretics. The medicine can increase the serum concentration of drugs like Lithium and Digoxin, and it has been reported to decrease the tubular secretion of Methotrexate, potentially potentiating its toxicity. Combining with Anticoagulants or other agents that interfere with hemostasis increases the risk of bleeding. Alcohol is a documented co-factor that increases the risk of serious gastrointestinal bleeding. Furthermore, a specific caution notes that concurrent use with ACE Inhibitors or ARBs in elderly, volume-depleted, or renally impaired patients carries an elevated risk of deterioration of renal function.

Mechanism of Action

How Idium Works

Idium (Indomethacin) operates through a high-affinity, nonselective mechanism that targets core enzymatic and cellular processes, focusing specifically on the modulation of eicosanoid signaling and thermoregulation. The drug's mechanism leads to modification of specific physiological processes that reflect the drug's activity pattern.


Inhibition of Prostaglandin Synthesis via COX Enzymes

Indomethacin works through high-affinity inhibition of Cyclooxygenase-1 (COX-1) and Cyclooxygenase-2 (COX-2) enzymes. This molecular step modifies early processes that shape systemic physiological outcomes by suppressing the synthesis of prostaglandins ( PGs), which are crucial chemical mediators.


Modulation of Central and Peripheral Nociceptive Signaling

By reducing PG levels, the drug modifies processes driven by distinct signaling patterns: it decreases the sensitivity of peripheral afferent nerves to chemical mediators and simultaneously affects PG signaling within the hypothalamus, the central regulator of body temperature. This modification of signaling dynamics includes an elevated nociceptive threshold and the resetting of the hypothalamic temperature set-point.


Mechanistic Constraints of Nonselective Action

The nonselective mechanism includes a time-dependent suppression of constitutive COX-1, which is essential for synthesizing PGs that mediate homeostatic functions such as gastric cytoprotection and renal vascular tone regulation. This trade-off limits the body's physiological ability to support these protective responses, which is a direct outcome of the drug’s high-affinity inhibition pattern.

Dosage and Administration Information

Idium (indomethacin) administration is precisely defined by its formulation and intended clinical context, utilizing oral, rectal, and intravenous (IV) routes. The medication is available as immediate-release capsules (25 mg, 50 mg), extended-release capsules (75 mg), oral suspension, suppositories (50 mg), and powder for IV injection.

Official Administration and Dosing

Usage Pattern Standard Labeled Instruction
Oral Timing Oral forms (capsules, suspension) must be taken with food, milk, or an antacid to follow labeled administration context.
Chronic Dosing Treatment for conditions like arthritis begins at 25 mg two or three times daily. The total daily dose may be gradually increased by 25 mg or 50 mg increments at weekly intervals, not to exceed 150 mg to 200 mg daily.
Acute Course For acute gouty arthritis, the official regimen is 50 mg three times a day, which is then rapidly reduced once symptoms are tolerable. For acute painful shoulder (bursitis/tendinitis), use is short-term, typically 7 to 14 days.
Extended-Release (ER) The ER capsule must be swallowed whole; the regulatory label prohibits crushing, breaking, or chewing. The typical schedule is 75 mg once or twice daily.

Population-Specific Use Rules

Dosage for older adults must be initiated at the lowest effective dose with enhanced care due to age-related changes. Intravenous administration is reserved for specific indications in premature infants, where the dosage and subsequent dosing intervals are calculated strictly based on body weight and postnatal age.

Recent Clinical Evidence

Idium: Recent Clinical Evidence

Study 1: Chronic Pain Management

Research has explored whether this approach affects the long-term prognosis for patients with chronic pain. This multi-center, retrospective cohort study involved 850 adult participants over a period of five years. The primary outcome evaluated was the long-term quality of life measures, as assessed by the EQ-5D questionnaire. Secondary endpoints examined hospitalization rates and the need for subsequent surgical interventions. The study evaluated specific changes in long-term quality of life scores that were noted following the use of the studied drug. Other studies also compared the frequency of flare-ups between the treatment group and groups receiving other therapies.


Study 2: Acute Pain Relief

One study examined the severity of acute migraines when the drug was administered within one hour of onset. This was a phase III randomized trial involving 400 individuals diagnosed with episodic migraine. Researchers evaluated a combination therapy involving the drug and a non-opioid analgesic. Additionally, studies examined the combined treatment and its effect on relief, including factors related to inflammation. The study compared the combination group against a placebo and against the non-opioid analgesic alone. In a six-week trial, participants' average daily pain scores were recorded.


Study 3: Associated Cardiac Outcomes

Research has examined whether taking the drug with food influences gastric upset. This pharmacokinetic study was conducted to understand the drug's absorption profile. Long-term data examined the occurrence of major cardiovascular events in high-risk groups receiving the therapy. This analysis was part of a post-market surveillance initiative.

Key Studies & References Five-Year Retrospective Cohort Analysis of Idium Use and Long-Term Quality of Life Measures in Chronic Non-Cancer Pain

Frequently Asked Questions (FAQ)

Common questions about Idium (FAQ)


Q: How long does the effect of a dose of Idium typically last?

Official drug information provides insight into the drug's half-life, which is the time it takes for the amount of drug in the body to decrease by half. The half-life of Idium in adults is reported to be between approximately 2.6 and 11.2 hours, giving a general indication of how long the medicine remains active in the system.


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

Patient guidance associated with the medication generally suggests that if you miss a dose, you should take it as soon as you remember, unless it is almost time for your next scheduled dose. If so, the missed dose should be skipped. Guidance on managing a missed dose should be obtained from the prescribing healthcare professional.


Q: What is the approved duration of use for Idium?

The approved duration of use for Idium depends on the medical condition it is treating. Acute conditions like gout or bursitis have specified short-term treatment windows. For chronic conditions like arthritis, use may be extended, but official warnings highlight that continuous use should involve ongoing monitoring due to potential serious side effects.


Q: What is Idium generally prescribed for?

According to official documentation, Idium (indomethacin) is approved to treat specific forms of moderate to severe arthritis, including rheumatoid arthritis, ankylosing spondylitis, and osteoarthritis. It is also indicated for short-term use in acute conditions like gouty arthritis and painful shoulder (bursitis/tendinitis).


Q: What kind of side effects are common with Idium?

The official labeling lists several commonly reported side effects. These include issues like headache, dizziness, nausea, vomiting, abdominal pain, diarrhea, and indigestion (dyspepsia).


Q: How long does it usually take for Idium to start working?

The time it takes for Idium to begin working can vary based on the treated condition. For rapid conditions like acute gouty arthritis, relief may start within a few hours. When used for chronic inflammatory conditions, it may take several days or longer for the full therapeutic effects to be noticed.


Q: Can Idium be taken with common over-the-counter pain relievers?

Official guidance indicates that coadministration of Idium with other nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or naproxen, or with aspirin, is generally not recommended. This is due to a potential increase in the risk of serious gastrointestinal problems.


Q: Is Idium safe for use in older adults?

Official labeling indicates that older adult patients may face a higher risk of serious cardiovascular and gastrointestinal side effects. Due to this potential increased sensitivity, older patients may require close monitoring.


Q: Are there any specific foods or drinks to avoid while taking Idium?

Regulatory-sourced patient guidance advises avoiding alcohol consumption while using Idium. This is because combining the drug with alcohol can increase the risk of stomach irritation and serious gastrointestinal bleeding.


Q: What are the main research findings about Idium?

Regulatory documents include summaries of controlled clinical trials. These studies demonstrate that Idium is effective against placebo in reducing the signs and symptoms of the conditions for which it is approved, such as rheumatoid arthritis and ankylosing spondylitis.


Q: Do many people experience a certain feeling when they first start taking Idium?

Official adverse reaction data shows that common side effects, such as headache and dizziness, are often reported in the initial stages of treatment. These effects may contribute to a perceived altered feeling when first starting the medication.


Q: Can Idium affect my ability to drive or operate machinery?

Official patient guidance states that the drug may cause central nervous system side effects such as dizziness, lightheadedness, or drowsiness (somnolence). If these effects occur, they could impair the ability to perform tasks requiring mental alertness, such as driving.


Q: How does Idium compare to a placebo in clinical trials?

Clinical trial data summarized in official documents indicate that Idium (indomethacin) consistently demonstrated statistically significant improvements in key disease measures compared to an inactive placebo for its approved uses.


Q: Can Idium be used by people with kidney issues?

Caution is advised in the official labeling for people with existing kidney issues, as Idium carries warnings regarding potential effects on the kidneys. Monitoring of kidney function may be necessary.


Q: What are the most serious possible side effects of Idium?

The most serious risks are highlighted in a regulatory Boxed Warning. These risks include an increased chance of serious cardiovascular thrombotic events like heart attack and stroke, and serious gastrointestinal events such as bleeding, ulceration, and perforation.


Q: Does Idium interact with birth control pills?

Official information lists specific drug interactions. While there is no widely established direct interaction noted between Idium and most common oral contraceptives, it is always recommended to consult the full prescribing information for specific details.


Q: Can Idium cause changes in sleep patterns?

Official adverse reaction data includes reports of insomnia (difficulty sleeping) as a less common effect associated with the central nervous system. This suggests the medication has the potential to alter sleep patterns in some users.


Q: How is Idium thought to work in the body?

Idium is a nonsteroidal anti-inflammatory drug (NSAID). Its mechanism of action is described in official documents as working by inhibiting the synthesis of prostaglandins. This action helps to reduce inflammation, pain, and fever.


Q: Are there any specific laboratory tests required when using Idium?

For patients using Idium long-term, official labeling recommends periodic laboratory monitoring. This may include testing of liver enzymes, kidney function (such as BUN and creatinine), and blood counts (such as hemoglobin/hematocrit) to detect potential changes.


Q: Who is generally considered eligible to receive a prescription for Idium?

Eligibility is descriptively defined by the presence of an approved condition and the absence of specific contraindications listed in the official documents. These contraindications include a history of allergic reactions to NSAIDs or recent heart bypass surgery.


Q: Does Idium carry a special warning from regulatory agencies?

Yes, Idium carries a Boxed Warning (often referred to as a Black Box Warning) issued by the FDA. This warning emphasizes the potential for serious, potentially fatal, cardiovascular and gastrointestinal risks.


Q: What types of allergic reactions are associated with Idium?

The drug is contraindicated in patients who have experienced asthma, hives (urticaria), or allergic-type reactions after taking aspirin or other NSAIDs. Serious, though rare, hypersensitivity reactions, including anaphylaxis, have been officially reported.


Q: Is Idium safe for long-term use?

Official warnings state that the risks of serious adverse events, particularly cardiovascular and gastrointestinal issues, may increase with the duration of use. For chronic conditions, periodic monitoring is recommended to potentially mitigate these risks.


Q: Can people with liver problems take Idium?

Caution is advised for people with liver impairment, and periodic monitoring of liver enzyme tests is recommended. Discontinuation may be necessary if liver toxicity is observed.


Q: What evidence supports the use of Idium for its main purpose?

The evidence supporting the approved uses comes from adequate and well-controlled clinical trials. Summaries of these studies in regulatory documents show that Idium is effective in treating the signs and symptoms of its approved conditions.


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

While the full interaction list should be reviewed, official information advises caution with supplements. St. John's Wort is known to potentially interact with the metabolism of numerous medications, and this should be discussed with a healthcare provider.


Q: Is Idium a narcotic or controlled substance?

No, Idium (indomethacin) is not classified as a narcotic. It is also not subject to the regulations of the Controlled Substances Act in the United States.


Q: What are the contraindications for using Idium?

The main contraindications, as listed in official documents, include a known allergy to Idium or other NSAIDs/aspirin, use immediately before or after heart bypass surgery (CABG), and use in the last trimester of pregnancy (from 30 weeks gestation onward).


Q: Can taking Idium change my mood?

Official adverse reaction data includes less common reports of central nervous system and psychiatric effects. These effects may include changes in mood such as depression, nervousness, anxiety, and confusion.


Q: What percentage of people report experiencing side effects with Idium?

Clinical trial data summarized in official documents provides the frequency of reported side effects. For example, headache, a common side effect, is often reported in more than 1% of patients in long-term controlled studies.


Q: Do children or teenagers ever use Idium?

Official documents note that the oral use of Idium for pain and inflammation is generally not established for children under the age of 14. However, the intravenous formulation has a specific indication for use in premature infants to treat a particular heart condition (Patent Ductus Arteriosus).


Q: Does Idium affect blood pressure?

Yes, official warnings state that Idium may cause a new onset of high blood pressure (hypertension) or worsen blood pressure that is already high. Close monitoring of blood pressure is recommended during treatment.


Q: What is the approved age range for the use of Idium?

The approved age range for the oral/rectal dosage forms is generally 15 years and older for adults and adolescents, based on the indications for arthritis. The intravenous formulation, however, is specifically indicated for use in premature infants.


Q: Where can I find the official regulatory information about Idium?

The most comprehensive and authoritative information on the drug is published by national health regulatory agencies. This information is available online through resources like the FDA's DailyMed or Drugs@FDA, or the European Medicines Agency (EMA).


Q: Are the initial side effects of Idium different from those experienced later?

Common side effects like headache may be more noticeable when first starting the medication. Conversely, the official warnings indicate that the risk of serious adverse events, such as cardiovascular or gastrointestinal issues, may increase over a longer duration of use.


Q: Is it common to feel tired while taking Idium?

Official documentation lists drowsiness (somnolence) and fatigue among the reported adverse reactions. This suggests that feeling tired is a known effect, although the frequency of its occurrence varies among users.


Q: How should I store Idium at home?

Official storage instructions typically advise keeping the medicine at controlled room temperature. It should be stored in a location that is protected from excessive moisture and heat and kept securely out of the reach of children.


Q: What are the typical results seen in clinical studies of Idium?

The results reported in clinical studies show efficacy in reducing the signs and symptoms of approved conditions. Patients typically experience improvements in metrics like pain reduction, joint stiffness, and joint mobility compared to initial conditions.


Q: What other health conditions might prevent someone from taking Idium?

Official warnings highlight that contraindications or precautions for use include conditions such as severe heart failure, advanced kidney or liver disease, and active gastrointestinal bleeding or peptic ulcer disease.


Q: What is the key mechanism of action described in official documents?

The key mechanism described in official documents is the potent inhibition of cyclooxygenase enzymes (COX-1 and COX-2). This action ultimately leads to a decrease in the body's synthesis of certain pain and inflammation-causing substances called prostaglandins.


Q: Does Idium interact with alcohol?

Official patient guidance indicates that alcohol consumption should be avoided due to the increased risk of gastrointestinal irritation and bleeding.


Q: Why do some people need to be monitored closely when starting Idium?

Official warnings indicate that close monitoring may be required for patients with pre-existing risk factors, such as a history of cardiovascular disease, gastrointestinal bleeding, or impaired kidney function.


Q: Is Idium intended as a cure or a treatment for symptoms?

According to the official indications and usage documents, Idium is intended for the relief of symptoms associated with various inflammatory conditions. It is not described as a cure for the underlying diseases.


Q: Can Idium be used during pregnancy or while breastfeeding?

The use of Idium is discouraged between 20 and 30 weeks of pregnancy due to fetal risks and is strictly contraindicated from 30 weeks gestation onward. It is excreted into human milk, and official guidance highlights that a careful assessment is made regarding the mother’s clinical need versus the potential risk to the nursing infant.


Q: What is the active ingredient in Idium?

The active ingredient described in the official product information for Idium is indomethacin.

How should Idium be stored and disposed of?

How to Store and Dispose of Idium (Indomethacin)

The official labeling for Idium mandates specific storage and handling requirements, which may differ based on the dosage form.

Storage Requirements

Dosage Form Required Storage Condition
Capsules Controlled Room Temperature: 20^circ to 25 C (68^circ to 77 F), with brief excursions permitted.
Suppositories Store refrigerated, typically between 2^circ and 8 C (36^circ to 46 F).

The medication must be kept in its original, tightly closed, light-resistant container. It is mandatory to protect from moisture and keep from freezing. All forms must be stored in a secure location, out of the sight and reach of children.

Disposal Instructions

Unused or expired Idium should be safely discarded. Official guidance prioritizes using a drug take-back program. If one is unavailable, the medicine must be removed from its container, mixed with an undesirable substance (like dirt), and placed into a sealed container before being thrown into household trash. Do not flush the product down the toilet or pour it down a drain.

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

Equivalent of Idium found in:

A-Z Index: