Intralgis

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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 Intralgis

Property Description
Active Ingredient Ibuprofen
Form Oral tablets, capsules, suspensions, and topical gels/creams
Pharmacological Class Non-Steroidal Anti-Inflammatory Drug (NSAID)
Common Use Symptomatic relief from pain, fever, and inflammation
Origin Synthetic compound (Propionic acid derivative)

What Type of Medicine is Intralgis? (Identity and Classification)

Intralgis is a pharmaceutical product primarily containing the active ingredient Ibuprofen, which officially classifies it as a Non-Steroidal Anti-Inflammatory Drug (NSAID). This places the medication in a widely recognized category of synthetic compounds designed to reduce inflammation and relieve discomfort throughout the body. The active substance Ibuprofen is structurally identified as a propionic acid derivative, a specific subset of the NSAID class. This indicates that the medication is derived from a chemical group with known analgesic and anti-inflammatory properties, recognized for its established safety profile compared to some older NSAID agents.

The identity of Intralgis is further defined by its composition as a single active ingredient product (monotherapy). This composition ensures that the broad symptomatic relief provided is derived exclusively from the pharmacological properties of Ibuprofen.

Composition, Origin, and Available Forms (Substance and Delivery)

The key therapeutic agent in Intralgis is the synthetic compound Ibuprofen. Depending on the specific presentation, the medicine is formulated for delivery either systemically via the oral route of administration or locally via the topical route.

The medication is available as oral solid forms (such as tablets or capsules) and oral liquid forms (suspensions), as well as various topical forms (like gels or creams). These different presentations are designed to suit diverse patient needs, such as providing an oral suspension suitable for the pediatric population or a topical gel focused on localized application. These forms combine the Ibuprofen with various solid excipients, liquid vehicles, or emulsion bases to create a stable and deliverable pharmaceutical preparation.

General Purpose: Symptomatic Relief from Pain, Fever, and Inflammation (Action and Benefit)

The fundamental purpose of Intralgis is to provide comprehensive symptomatic relief by modulating the body's inflammatory and pain responses. Its established efficacy is tied to its functional role as an NSAID, which allows it to act on three key areas of discomfort. Ibuprofen is recognized as an essential medicine for addressing basic health needs, particularly in controlling common symptoms of pain and fever.

Intralgis helps to alleviate general discomfort because it functions simultaneously as an analgesic (pain reliever), an antipyretic (fever reducer), and an anti-inflammatory agent. A typical scenario involves using it for the temporary relief of discomfort associated with common musculoskeletal pain or fever. This combined action means the medicine effectively diminishes physical symptoms like swelling and stiffness, lowers an elevated body temperature, and reduces the sensation of pain.

Regulatory References

  1. U.S. National Institutes of Health (NIH)
  2. MedlinePlus Drug Information on Ibuprofen
  3. WHO Essential Medicines List
  4. Ibuprofen on the WHO Electronic Essential Medicines List

What side effects are possible with Intralgis?

Intralgis is associated with a range of possible side effects that have been formally documented in governmental regulatory information. The most important safety information often centers on the potential for serious and clinically significant adverse reactions.

Serious and Clinically Significant Risks

The most serious warnings typically issued for this type of medication concern:

  • Gastrointestinal (GI) Events: The risk of serious GI inflammation, ulceration, bleeding, and perforation, which can be fatal, may occur without warning symptoms. The risk is elevated with higher doses and longer duration of use.
  • Cardiovascular Thrombotic Events: The drug may increase the risk of serious cardiovascular events, including myocardial infarction (heart attack) and stroke, which can be fatal. This risk may increase with duration of use and in patients with pre-existing cardiovascular disease.
  • Hypersensitivity and Dermatologic Reactions: Serious, potentially life-threatening skin reactions, such as Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), and severe anaphylactic reactions are documented risks.

Common and Other Adverse Reactions

Adverse reactions are classified by frequency (e.g., Very Common, Common, Uncommon, Rare) and affect multiple system-organ classes. The most Very Common side effects typically involve the GI system, such as nausea, vomiting, dyspepsia, and abdominal pain. Other system-organ classes involved include the nervous system (e.g., headache, dizziness), renal/urinary disorders (e.g., renal impairment), and blood disorders (e.g., severe blood dyscrasias).

Population-Specific Safety Considerations

Safety data indicate that elderly patients are at a higher risk for serious adverse outcomes, particularly GI bleeding and perforation. Patients with pre-existing conditions like severe heart failure, advanced renal disease, or a history of GI issues are also identified as requiring particular caution, and the use of the drug may be contraindicated in these severe cases.

Overdose and Emergency Response

Overdose and when to seek help

Suspected overdose of Intralgis requires immediate medical attention. This section details the overdose manifestations and required emergency actions strictly as documented in official government regulatory sources.


Documented Overdose Manifestations

Overdose may present with a range of documented signs, primarily affecting the gastrointestinal and central nervous systems. Gastrointestinal symptoms commonly include nausea, vomiting, diarrhea, and epigastric pain. CNS effects reported are drowsiness, lethargy, confusion, severe headache, and tinnitus (ringing in the ears).

Severe Outcomes and Emergency Action

Officially documented severe outcomes include the potential for acute renal failure, profound hypotension (shock), coma, and convulsions (seizures). Management is strictly symptomatic and supportive treatment, as no specific antidote is known.

If an amount exceeding the maximum recommended dose has been taken, you must seek immediate medical attention and contact a Poison Control Center or emergency services right away, even if no symptoms are present. Hospital monitoring of vital signs and renal function is mandated for all significant or intentional ingestions. Specific overdose considerations apply to elderly patients and those with pre-existing renal or hepatic impairment.

Therapeutic Uses of Intralgis

What Intralgis Treats: Main Uses and Benefits

Intralgis, containing Ibuprofen, is commonly used for managing symptomatic relief across three primary domains of discomfort, targeting acute and recurrent manifestations that interfere with daily function. This medication is used for symptomatic management when short-term assistance is needed for minor aches, pain, and fever.


This medicine helps address symptom clusters that may become intense or disruptive, including headache, dental pain, pain from sprains and strains, musculoskeletal stiffness, and the discomfort of menstrual cramping. It is relevant for easing symptoms related to physical discomfort and systemic imbalance associated with seasonal illnesses like the common cold and influenza. Intralgis supports patients during episodes of heightened discomfort by easing the overall symptom load and assisting with maintaining functional stability when symptoms interfere with routine activities.

“The primary goal of using Intralgis is to offer symptomatic relief that helps patients cope more steadily with difficult acute or recurrent episodes.”


Quick Fact: Symptomatic Support for Pain, Fever, and Inflammation

Intralgis is commonly used to help with three core symptomatic areas:

  • Analgesia (easing pain signals from various sources).
  • Antipyresis (lowering elevated body temperature).
  • Anti-inflammation (reducing swelling and tenderness in tissues and joints).

Eligibility and Restrictions for Use

Who can and cannot use Intralgis?

Intralgis, which contains the non-steroidal anti-inflammatory drug (NSAID) Ibuprofen, is subject to specific population eligibility rules defined by regulatory authorities.

Populations for whom use is Contraindicated

Use of the medicine is strictly prohibited in individuals with a history of allergic-type reactions (such as asthma or hives) to aspirin or any other NSAID. It is also contraindicated for patients with severe heart, renal, or hepatic failure, as well as those with active gastrointestinal bleeding or recurrent peptic ulceration.

Furthermore, the medicine is contraindicated for women in the third trimester of pregnancy (30 weeks or later) and for the management of pain related to coronary artery bypass graft (CABG) surgery.

Age and Conditional Use Eligibility

Age Group / Status Official Eligibility Status
Infants under 6 months Safety and effectiveness not established; use is not approved.
Children 6 months and older Approved for use in fever and mild-to-moderate pain.
Older Adults (60+ years) Increased risk of serious gastrointestinal events; use requires caution.
Pregnancy (20-30 weeks) Use should be avoided unless specifically directed by a professional.

These limitations ensure the medicine's use aligns with established safety profiles across all patient groups.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Intralgis, an Non-Steroidal Anti-inflammatory Drug (NSAID), is documented across several pharmaceutical classes in official regulatory labeling. These interactions can be classified into two main types: those causing additive pharmacodynamic effects and those causing pharmacokinetic alteration of co-administered drugs.

Interacting Product Category Regulatory Constraint Summary
Anticoagulants/Antiplatelet Agents Increased risk of severe bleeding and requires close monitoring of INR stability; do not combine with other NSAIDs or use with caution with low-dose aspirin.
Diuretics & Anti-hypertensives May reduce the blood pressure-lowering effect of agents like ACE inhibitors, ARBs, and thiazide diuretics. Increased risk of worsening kidney function, particularly in volume-depleted or elderly patients.
Lithium, Methotrexate Intralgis officially increases plasma concentrations of these drugs due to reduced renal clearance, necessitating careful patient observation for signs of toxicity.
Low-Dose Aspirin (Cardioprotection) Specific timing separation is required: immediate-release aspirin should be administered at least 30 minutes after or 8 hours before Intralgis to minimize interference with its antiplatelet effect.
SSRIs, Corticosteroids, Alcohol Officially noted to increase the risk of severe gastrointestinal bleeding due to additive effects on the gastric mucosa.

This structure, based on government-verified interaction data, dictates the need for enhanced monitoring (e.g., for bleeding or toxicity) and adherence to specific dosing intervals when combining Intralgis with these documented substances.

Mechanism of Action

Intralgis's mechanism of action centers on its ability to interfere with a central enzyme system responsible for generating key signaling molecules throughout the body.

Molecular Action: Non-Selective COX Enzyme Inhibition

The primary mechanistic domain involves the non-selective, competitive, and reversible inhibition of the Cyclooxygenase (COX) enzymes, specifically both COX-1 and COX-2. This action blocks the initial molecular step where Arachidonic Acid is converted into various Prostanoid mediators, such as Prostaglandins and Thromboxanes. This inhibition modulates physiological processes dependent on the resulting mediator activity.

Pathway Effect: Modulation of Central and Peripheral Signals

By suppressing the synthesis of Prostaglandins, the drug modifies two critical systems simultaneously. Peripherally, it dampens the chemical signals that sensitize nociceptors (pain-sensing nerves) at injury sites. Centrally, it acts on the Hypothalamus to reset the elevated thermoregulatory set-point. These cascades lead to predictable physiological adjustments: a decrease in peripheral nociceptor sensitization and a shift in the hypothalamic thermal set-point.

Systemic Consequence: Limiting the Inflammatory Response

The reduced synthesis of Prostaglandins at the site of inflammation limits their local effects, such as vasodilation and increased blood vessel permeability. This action influences local mediator-driven processes, which modulates the peripheral cascade of vasodilation and increased vascular permeability. The limitation of these local effects results in reduced fluid accumulation at the tissue level.

Dosage and Administration Information

Intralgis, which contains Ibuprofen, is used according to guidelines that govern its administration and dosing. The medicine is administered via three primary routes: oral administration (tablets, capsules, and suspensions), topical application (gels and creams), and intravenous (IV) infusion, which is generally restricted to the hospital setting.

Oral dosing follows distinct patterns based on the intended use. For non-prescription acute management, adult doses range from 200 mg to 400 mg, with a maximum of 1200 mg over 24 hours. Prescription use allows for higher doses, typically 400 mg to 800 mg per unit, not exceeding 3200 mg daily, taken every 4 to 8 hours. Oral forms may be consumed with food or milk to lessen common gastrointestinal issues.

A fundamental procedural rule across all forms is to utilize the lowest effective dosage for the shortest duration necessary to achieve the desired outcome. For pediatric patients, dosing is calculated by body weight and is documented for children 6 months and older. Intravenous administration requires the solution to be diluted prior to infusion and administered over a minimum time, such as 30 minutes for adults. If a dose is missed, it is generally recommended to take it as soon as possible unless the next dose is almost due, in which case the missed dose should be skipped entirely.

Recent Clinical Evidence

Research evidence / Overview of Studies for Intralgis

This overview summarizes the type of research that has been conducted for Intralgis (Ibuprofen), what those studies explored, and what aspects of the medicine's evidence base remain uncertain.


1. Evidence for Symptomatic Relief of Acute Pain

Research for acute pain is founded on a high volume of short-term controlled trials exploring measurements of change in pain intensity and the time needed to observe a change in symptoms in populations with headache, dental pain, and sprains. Studies reported measurements of a change in pain intensity scores relative to placebo during observed short-term periods. What remains uncertain is the durability of observed relief, as long-term outcomes are not well characterized. Research examined the measured outcomes across various analgesic compounds; however, complete comparative data remain limited.

2. Evidence for Chronic Inflammatory Pain and Stiffness

The evidence base for conditions like Osteoarthritis includes randomized controlled trials (RCTs) comparing oral and topical forms. The research monitored patient-reported outcomes describing perceived discomfort and functional metrics like joint stiffness and mobility over intermediate periods (weeks to months). Long-term observational studies track use over multiple years, although these findings are subject to the inherent design limitations of non-randomized research. Research examined the measured outcomes across various NSAIDs; however, data to contrast all outcomes remain limited.

3. Evidence for Fever Reduction (Antipyresis)

Evidence is derived from numerous RCTs that explored outcomes related to lowering elevated body temperature in both adult and pediatric patients (children over 6 months). Studies measured the reduction in temperature and the duration of the change. Findings were mixed in studies exploring various antipyretic compounds, with heterogeneity noted in the reported magnitude and duration of the changes. Limited information is available for infants younger than 6 months, and evidence quality varies across older studies.


4. Summary of Research Limitations and Uncertainty

The overall evidence base is heavily weighted toward short-term data, and follow-up durations were limited in many controlled trials. Long-term outcomes for continuous use are not fully established by randomized evidence. Research has also explored the analgesic ceiling effect, where studies suggested that increasing the dose did not provide a proportional increase in the change of pain scores. Complete comparative evidence across all pain medications remains lacking.

Key Studies & References

  1. Label: IBUPROFEN tablet, film coated (DailyMed / FDA)
  2. Ibuprofen - eEML - Electronic Essential Medicines List (WHO)

Frequently Asked Questions (FAQ)

Common questions about Intralgis (FAQ)


Q: How quickly does Intralgis typically start to work after taking it?

A: Studies designed to measure the effectiveness of Intralgis, which contains ibuprofen, have explored the time needed to observe a change in symptoms. The official research evidence indicates that measurements of pain intensity scores begin to show change over controlled short-term periods following administration.

Q: What is the longest period of time someone can take Intralgis?

A: The procedural rule defined in regulatory documents is to use the lowest effective dosage for the shortest duration necessary to achieve the desired outcome. The evidence base used for regulatory approval is heavily weighted toward short-term data, and long-term outcomes for continuous use are not fully established by randomized evidence.

Q: Can Intralgis affect the results of lab tests, like liver function tests?

A: Regulatory documents mention that interactions with the drug can cause a pharmacokinetic alteration of co-administered substances. This means the way the body handles other drugs or even certain substances measured in lab tests could be affected. This may be a factor considered by a healthcare professional.

Q: Is Intralgis safe to take for patients with high blood pressure?

A: Official labeling notes that the medicine may reduce the blood pressure-lowering effect of certain medications used to treat high blood pressure. The potential effects on blood pressure and treatment are factors that lead to caution being noted for this patient group.

Q: Can Intralgis be used to treat migraines, or is it only for muscle pain?

A: The fundamental purpose of Intralgis is to provide broad symptomatic relief from pain, fever, and inflammation. Research evidence includes studies focused on headache pain relief. However, the medicine is not officially described in regulatory documents as a specific treatment for migraine disease, which is a condition distinct from general headache.

Q: What happens if I drink alcohol while taking Intralgis?

A: Official documents explicitly state that combining the medicine with alcohol can increase the risk of severe gastrointestinal bleeding. This is due to additive effects that may be experienced on the stomach lining.

Q: Are there any known severe allergic reactions associated with Intralgis?

A: Yes. Regulatory documents explicitly warn of the possibility of serious, potentially life-threatening hypersensitivity and dermatologic reactions. These documented risks include severe reactions like anaphylactic reactions and conditions such as Stevens-Johnson syndrome (SJS).

Q: Is Intralgis available as a generic medicine?

A: Yes. The active ingredient in Intralgis is Ibuprofen, which is an established compound. The substance is widely available and approved in many official generic formulations globally.

Q: What is the shelf life of Intralgis, and how should it be stored?

A: The approved shelf life (expiration date) is specified on the product packaging as determined during stability testing. Furthermore, regulatory requirements mandate storing the medicine at controlled room temperature (20 C to 25 C) and protecting it from moisture and excessive heat.

Q: Is Intralgis safe for older adults (seniors)?

A: Regulatory data indicates that older adults are categorized as being at a higher risk for serious adverse outcomes, particularly gastrointestinal bleeding and perforation. Official information documents that use in this population is associated with a need for caution.

Q: Can people with kidney problems safely use Intralgis?

A: The medicine is strictly contraindicated (prohibited) for patients with severe renal failure as defined in the official labeling. Use in patients with pre-existing kidney conditions may also carry an increased risk of worsening kidney function.

Q: What evidence is there that Intralgis is better than placebo?

A: Regulatory approval is based on a high volume of controlled clinical trials. These studies compared the drug's effects to a placebo (an inactive substance) and demonstrated that Intralgis produced a statistically significant change in pain intensity scores and symptomatic relief in observed short-term periods.

Q: Does taking Intralgis cause water retention or swelling?

A: Official drug documents cite that fluid retention and edema (swelling) are possible adverse effects that have been reported with the use of this type of medication. Fluid retention and swelling are documented as potential effects that may occur.

Q: Can Intralgis cause problems with my vision?

A: Official drug labels list disturbances in vision as an adverse reaction that has been reported. These can include issues such as blurred or decreased vision, though these effects are typically described as uncommon or rare.

Q: Why is the official dosage range for Intralgis so broad?

A: The wide range of approved doses is necessary because the maximum authorized limits differ significantly based on the intended use. The limits for non-prescription acute management are lower than the maximum limits allowed for prescription use in treating certain chronic conditions like inflammation.

Q: What kind of monitoring (like blood tests) is sometimes needed while taking Intralgis?

A: Regulatory guidance suggests that enhanced monitoring may be needed for certain patients, particularly during long-term use. Enhanced monitoring of renal function, blood pressure, and blood counts may be indicated in certain patients to observe for documented risks.

Q: What is meant by the term 'Intralgis dependency' in official documents?

A: The active ingredient in Intralgis is formally classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID). It is not listed as a controlled substance and is not associated with the risk of physical dependency in regulatory safety warnings.

Q: How long does Intralgis stay in the body after the last dose?

A: Pharmacokinetic data from regulatory documents indicates the drug has a relatively short elimination half-life, which is typically cited as being around 1.9 to 2.2 hours. The medicine is then rapidly and completely eliminated from the body primarily via the kidney.

Q: Can Intralgis cause issues with blood sugar levels?

A: While not listed as a primary side effect, reports have occasionally linked the use of NSAIDs to changes in blood sugar levels or potential interference with diabetes management. This association suggests that patients with diabetes are a population requiring observational caution.

Q: Are there any reported cases of serious side effects that led to regulatory warnings?

A: Yes. Regulatory agencies have issued warnings concerning serious risks associated with this class of medication. These include fatal cardiovascular thrombotic events (such as heart attack and stroke) and severe gastrointestinal bleeding and ulceration.

Q: Does Intralgis interact with any common antidepressant medications?

A: Official labeling notes that using Intralgis alongside SSRIs (a common class of antidepressants) can increase the risk of severe gastrointestinal bleeding. This interaction is described as an additive risk documented in the official labeling.

Q: What are the signs of taking too much Intralgis?

A: Regulatory documents on overdose describe signs such as abdominal pain, nausea, vomiting, dizziness, drowsiness, headache, and ringing in the ears (tinnitus). In severe cases, documented signs include gastrointestinal bleeding, low blood pressure, acute kidney failure, and coma.

Q: Is it possible to take Intralgis only 'as needed' instead of on a fixed schedule?

A: Yes. For the short-term relief of mild-to-moderate symptoms, official product information often approves the medicine for use on an 'as needed' basis. The key requirement is that the total recommended dose and daily limits are not exceeded.

Q: What is the recommended maximum number of doses of Intralgis in a 24-hour period?

A: Regulatory documents specify a maximum total milligram limit that must be respected over 24 hours. For over-the-counter strengths, official labeling commonly instructs patients not to exceed 3 or 4 doses in a 24-hour period, depending on the tablet strength.

Q: Are there known cross-sensitivities if I am allergic to other medicines?

A: Yes. The drug is contraindicated (meaning its use is strictly prohibited) for individuals with a history of allergic-type reactions, such as asthma or hives, to aspirin or any other NSAID.

Q: Is Intralgis treatment effective for all types of chronic pain?

A: Regulatory evidence focuses on chronic pain related to inflammation, such as Osteoarthritis, where its anti-inflammatory properties are most relevant. Official documentation does not support a claim that it is effective for all types of chronic pain, as different pain types have unique underlying mechanisms.

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

A: Regarding pregnancy, the medicine is strictly contraindicated (prohibited) for women in the third trimester (30 weeks or later). Official information also states that use in the 20 to 30-week period should be avoided unless specifically directed. The official labeling makes no mention of eligibility or risks related to breastfeeding.

Q: Does taking Intralgis cause stomach upset or acid reflux?

A: Official safety data indicates that adverse reactions affecting the gastrointestinal (GI) system are classified as Very Common. These effects typically include discomforts such as nausea, vomiting, dyspepsia (indigestion), and abdominal pain. While not specifically named 'acid reflux,' these symptoms fall under common GI discomfort.

Q: Are there specific patient groups that should never use Intralgis?

A: Yes, use of the medicine is strictly contraindicated (prohibited) for specific groups. These include patients with severe heart, renal, or hepatic failure, those with active gastrointestinal bleeding, and women in the third trimester of pregnancy (30 weeks or later).

How should Intralgis be stored and disposed of?

Intralgis (Ibuprofen) must be stored and handled according to specific regulatory requirements to maintain product stability and ensure public safety.

Storage & Disposal Scope
Labeled Storage Temperature Requirements: Store at controlled room temperature, specifically 20 C to 25 C (68 F to 77 F). Brief excursions between 15 C and 30 C are permitted.
Light/Moisture Protection Requirements: The product must be protected from moisture and excessive heat. Keep the container tightly closed or in its original container.
Handling Requirements: Do not freeze (especially suspensions). Avoid excessive heat.
Disposal Instructions (Official): The preferred method for discarding unused or expired product is a drug take-back program or mail-back option.
Environmental Requirements: Do not flush down the toilet or pour into a drain. If take-back is unavailable, household disposal involves mixing the medicine with an unappealing substance and sealing it before placing it in the trash.
Child-Protection Storage Requirements: Store the medicine out of the sight and reach of children.

The official documents mandate that the product must be stored at a controlled temperature and protected from environmental factors like heat and moisture to preserve its integrity. Furthermore, disposal instructions strictly govern that the product must not enter wastewater systems, providing specific procedures for safe discarding to prevent accidental harm.

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

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