Algoflex 400 mg

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Algoflex 400 mg

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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

Overview of Algoflex 400 mg

Property Description
Active Ingredient Ibuprofen
Form Film-coated tablet
Pharmacological Class Non-Steroidal Anti-Inflammatory Drug (NSAID)
Common Use Symptomatic relief of pain, inflammation, and fever
Origin Synthetic propionic acid derivative

What Type of Medicine is Algoflex 400 mg?

Algoflex 400 mg is a specific, proprietary pharmaceutical preparation containing the single active ingredient, Ibuprofen. Ibuprofen is formally classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID), which establishes the basis for its therapeutic action. This classification defines the medicine's role as an agent used for its combined abilities to reduce pain, minimize inflammation, and lower fever.

The product is defined by its fixed strength of 400 mg per tablet, which is a standardized dose intended for reliable therapeutic effect in adults and adolescents. The active component is a synthetic compound derived from propionic acid, distinguishing its origin from medicinal agents extracted from natural sources. This fixed-dose formulation is typically marketed for the symptomatic management of common discomforts, such as those related to muscle strains or fever.


Composition and General Therapeutic Purpose

The general purpose of Algoflex 400 mg is the symptomatic relief of discomfort by interrupting the body's natural processes that initiate pain and inflammation. As a monocomponent product, its composition consists solely of Ibuprofen and necessary pharmaceutical excipients used to form the tablet structure.

The mechanism of action involves inhibiting enzymes responsible for producing prostaglandins, key chemical messengers involved in the body's inflammatory and pain responses. This action provides relief by addressing the source of the symptoms. The medication's presentation as a film-coated tablet is a common and stable oral dosage form designed for efficient systemic absorption, ensuring the active agent can exert its effects throughout the body.

Regulatory References

  1. Ibuprofen: MedlinePlus Drug Information
  2. Prostaglandin Synthesis Pathway

What side effects are possible with Algoflex 400 mg?

Possible side effects and safety information

Official regulatory documents classify the possible adverse effects of Ibuprofen (the active ingredient in Algoflex 400 mg) based on frequency and the affected body system. Adverse reactions are grouped across the full spectrum, from uncommon to very rare, across major System-Organ Classes.

Adverse Reaction Scope

The most commonly documented effects involve Gastrointestinal Disorders (e.g., dyspepsia, abdominal pain, nausea) and Nervous System Disorders (e.g., headache). Uncommon reactions also include various skin rashes and hypersensitivity responses.

Documented Serious Adverse Reactions

The official safety information highlights specific rare but serious risks:

  • Serious Gastrointestinal Events: This includes the risk of bleeding, ulceration, and perforation in the stomach or intestines, which can be fatal.
  • Cardiovascular Thrombotic Events: An increased risk of serious events like myocardial infarction (heart attack) and stroke is associated with high doses (2400 mg/day) and prolonged treatment.
  • Severe Cutaneous Adverse Reactions (SCARs): These include rare but critical skin conditions such as Stevens-Johnson Syndrome (SJS).

Population and Duration Safety Notes

The regulatory profile identifies specific safety constraints. Elderly individuals have a documented increased frequency of adverse reactions, particularly serious gastrointestinal events. The label also establishes that the risk of both cardiovascular and gastrointestinal complications is higher with increasing NSAID doses and longer duration of treatment. Furthermore, use is contraindicated in the last trimester of pregnancy.

Ibuprofen may also mask symptoms of infection, and caution is noted for patients with pre-existing conditions like severe heart failure, severe hepatic, or severe renal impairment, where its use is restricted.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Algoflex 400 mg (Ibuprofen) overdose details manifestations primarily affecting the Gastrointestinal (GI) and Central Nervous Systems (CNS). Documented presentations include abdominal pain, nausea, vomiting, and diarrhea, alongside CNS effects like drowsiness, lethargy, confusion, and severe headache. Sensory effects such as tinnitus and blurred vision are also listed in regulatory texts.


Severe Outcomes and Emergency Response

Official labeling states that overdose may lead to serious systemic complications, including acute renal failure, metabolic acidosis, low blood pressure (shock), and severe GI events such as bleeding and perforation. The most severe CNS manifestations documented are convulsions and coma.

Regulatory guidance mandates that individuals must seek immediate medical attention or contact emergency services immediately upon suspicion of an overdose, given the potential for these life-threatening outcomes. Management is described as entirely symptomatic and supportive, as no specific antidote is known. Hospital observation and monitoring of vital signs may be required.


Population-Specific Considerations

Official warnings highlight increased risk and severity in the elderly, particularly concerning serious GI complications. Regulatory documentation also notes an increased risk of renal impairment in dehydrated children and adolescents.

Therapeutic Uses of Algoflex 400 mg

What Algoflex 400 mg Treats: Main Uses and Benefits

Algoflex 400 mg is applied across domains where additional symptomatic support is needed, primarily addressing symptoms related to physical discomfort, inflammatory or irritative states, and systemic imbalance like fever. The medicine is commonly used to help address symptom clusters that may appear suddenly or fluctuate, such as headache, toothache, menstrual cramps, joint and muscle pain, stiffness, and swelling. Furthermore, the medication is relevant for easing symptoms related to elevated body temperature (fever).

This supportive relief contributes to improved comfort during periods of heightened symptoms and assists with addressing symptoms that interfere with daily functioning. It is often used during phases when symptoms become more noticeable, such as after minor trauma, during seasonal illness, or in episodic pain.

“This medication is commonly used across conditions presenting with acute episodes and provides supportive relief when symptoms interfere with routine activities.”


Quick Fact: Symptomatic Support for Acute Episodes

Algoflex 400 mg is considered relevant in contexts involving heightened systemic burden, supporting patients during difficult episodes to support general well-being during symptomatic phases and helping to address symptoms that become more disruptive during flare-ups of conditions like arthritis.

Eligibility and Restrictions for Use

Eligibility Profile for Algoflex 400 mg

The eligibility for using Algoflex 400 mg, which contains Ibuprofen, is strictly defined by regulatory authorities based on age, pre-existing conditions, and physiological status. This medicine is generally permitted for adults and adolescents aged 12 years and older.

Contraindications (Must Not Use)

Use is contraindicated in several populations, primarily due to the risks associated with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs):

  • Patients with a known hypersensitivity to ibuprofen or other NSAIDs (such as aspirin), which has resulted in asthma, hives, or allergic reactions.
  • Individuals with active or recurrent peptic ulcer/gastrointestinal bleeding, or a history of related GI complications from previous NSAID use.
  • Patients with severe heart failure (NYHA Class IV), severe renal failure, or severe hepatic failure.
  • Women who are in the third trimester of pregnancy (after 28 weeks).

Restricted or Cautionary Use

Caution is required for older adults and for patients with mild-to-moderate renal or hepatic impairment. Individuals with certain controlled conditions, such as hypertension or a history of gastrointestinal diseases like Crohn's, must also use the medication with specific caution, as defined in official labeling. Use during the first and second trimesters of pregnancy is restricted and generally not recommended unless clearly necessary.

What should I know about interactions with other medicines?

Algoflex 400 mg (Ibuprofen) interaction patterns are strictly defined by regulatory authorities concerning pharmacodynamic risk and altered systemic exposure of co-administered medicines.


Restricted and High-Risk Combinations

Co-administration with other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), including selective COX-2 inhibitors and high-dose aspirin (75 mg daily), is contraindicated due to a significantly increased risk of severe gastrointestinal adverse events.


Exposure and Clearance Modifications

Ibuprofen can increase the plasma concentrations of certain co-administered drugs by reducing their renal clearance. This applies to medicines such as Lithium, Digoxin, and Phenytoin. Clearance of Methotrexate is reduced by Ibuprofen, which poses a risk of increased toxicity. Furthermore, concurrent use with CYP2C9 inhibitors (e.g., Fluconazole) can increase the exposure and concentration of Ibuprofen itself.


Pharmacodynamic and Efficacy Interference

The medicine increases the risk of bleeding and haemorrhage when used with Anticoagulants (e.g., Warfarin) or Antiplatelet agents. It also increases the risk of gastrointestinal bleeding when combined with Corticosteroids or Selective Serotonin Reuptake Inhibitors (SSRIs). Additionally, the therapeutic efficacy of Antihypertensives and Diuretics may be reduced by Ibuprofen.


⏱️ Timing and Substance Rules

To prevent interference with the antiplatelet effect of low-dose aspirin used for cardioprotection, immediate-release Ibuprofen must be administered at least 30 minutes after or at least 8 hours before the aspirin dose. Alcohol consumption is documented to increase the risk of gastrointestinal side effects.

Mechanism of Action

How Algoflex 400 mg Works: Mechanism of Action

Algoflex 400 mg (Ibuprofen) acts within the domain of enzyme-mediated signaling as a non-selective inhibitor of the Cyclooxygenase (COX-1 and COX-2) enzyme systems. This interaction represents the primary mechanistic focus.

Non-Selective Inhibition of Cyclooxygenase (COX) Enzymes

The drug temporarily binds to the active sites of both COX-1 and COX-2, preventing these enzymes from performing their catalytic function of converting arachidonic acid into prostanoids. This action modifies early molecular steps that shape systemic physiological outcomes.

Modulation of Prostaglandin Synthesis Pathways

By inhibiting the COX enzymes, Algoflex directly affects the Prostaglandin Synthesis Pathway, an essential molecular cascade that leads to the production of key mediators. The resulting reduction in the creation of these signaling molecules leads to the attenuation of central and peripheral signaling within the targeted biological cascade. This reflects the mechanism's influence on core regulatory pathways and their system-level adjustments.

Dosage and Administration Information

Algoflex 400 mg, an oral preparation of Ibuprofen, is administered via the oral route by swallowing the film-coated tablet whole. The established usage protocol specifies that the tablet must be ingested with a full glass of fluid, and standard instructions state it should not be crushed, broken, or chewed. This oral administration method is the basis for established dosing schedules.

The standard dosing regimen varies based on the intended use. For short-term relief of pain or fever, the starting dose is typically 200 mg to 400 mg. Doses are repeated as necessary, but with a minimum interval of 4 to 6 hours between administrations. The maximum total daily intake for these non-prescriptive uses must not exceed 1200 mg. For chronic prescription use, such as the management of rheumatic conditions, maximum daily doses may be higher, ranging up to 2400 mg in divided doses.

A key administration condition is the relationship to food: the medicine should preferably be taken with or after food or milk. This instruction manages patient tolerance during use. For short-term usage patterns, the duration for fever or pain is often limited to a few consecutive days, as specified in medical guidance. Furthermore, standard instructions recommend that older adults and individuals with mild to moderate renal or hepatic impairment should always initiate therapy using the lowest effective dose for the shortest necessary duration.

Recent Clinical Evidence

Research evidence / Overview of studies for Algoflex 400 mg

This overview summarizes the scientific structure and scope of the research evidence for Algoflex 400 mg (ibuprofen) as reported in official and peer-reviewed sources. It focuses on the studies conducted to understand how the medicine was studied for its approved uses.

Evidence for Acute Symptomatic Pain Relief

The core evidence for the medicine was studied in Randomized Controlled Trials (RCTs) and meta-analyses. These studies were designed to examine outcomes related to physical discomfort over short timeframes, typically up to six hours after a single dose in adult populations. Research describes patterns observed in trials focused on acute, episodic changes in conditions like dental pain, headache, and menstrual cramps. The results apply mainly to the specific short-term settings studied in these controlled trials.

Evidence for Antipyretic (Fever Reduction) Efficacy

Research examined the medicine's role in addressing fever through RCTs and systematic reviews that focused on monitoring outcomes related to systemic imbalance. These trials monitored temperature change and the duration over which the temperature remained reduced in both adults and children. While the antipyretic effect was observed in some studies, data for certain adult groups may remain less concentrated, as much of the recent comparative evidence has concentrated on optimizing treatment strategies for fever in children.

Dose-Response and Comparative Studies

Randomized comparative trials were used to examine how the 400 mg strength compared to higher single doses (such as 600 mg or 800 mg) for short-term pain relief. These studies monitored pain reduction scores and explored the concept of an "analgesic ceiling." Findings contribute to understanding the measured patterns of the 400 mg dose compared with other agents studied for acute pain, but the results do not generalize to long-term inflammatory disease management.

Uncertainty and Limitations in the Research

The available research evidence is most robust for studies with short-term or episodic symptom patterns, where follow-up durations were limited to a few days. There is limited information for long-term outcomes regarding the continuous daily use of this strength over extended periods. Research has explored the agent in adolescents and children, but data for certain other special populations, such as older adults with complex comorbidities, remain insufficient. Overall, evidence quality varies across studies, and research does not determine whether an individual will respond similarly to the group patterns observed in trials.

Key Studies & References

  1. Antipyretic efficacy and safety of ibuprofen and acetaminophen in children and adults: a meta-analysis and qualitative review
  2. Ibuprofen Drug Facts Label (FDA/DailyMed)
  3. Oral Analgesics for Acute Dental Pain (ADA Guidelines)

Frequently Asked Questions (FAQ)

Common questions about Algoflex 400 mg (FAQ)


Q: What ingredients are in Algoflex 400 mg besides the active one?

The tablet contains the active ingredient, Ibuprofen, along with necessary inactive ingredients, also known as excipients, which help form the tablet. These excipients commonly include substances such as cellulose, starch, and coating agents. The exact list of these components varies by manufacturer and is fully detailed on the specific product's package label.


Q: Are there any specific foods that should be avoided when taking Algoflex 400 mg?

Official product information does not typically list specific common foods that must be strictly avoided. In fact, this medicine is often recommended to be taken with or after food or milk to minimize stomach irritation. However, consuming alcohol is documented to increase the risk of gastrointestinal side effects and is generally avoided while using this medication.


Q: What should be done if I miss a scheduled time for Algoflex 400 mg?

Regulatory labels generally focus on maintaining the minimum correct interval between doses, which is typically 4 to 6 hours for this medicine. If a dose is missed, the recommended approach is usually to take the next scheduled dose while maintaining the proper interval. It is important that the maximum total daily intake established by regulatory guidelines is not exceeded.


Q: Does taking Algoflex 400 mg with a meal change how it works?

Taking Algoflex 400 mg with food is mainly recommended to help patient tolerance and reduce the possibility of stomach upset. While the presence of food may slightly slow down the rate at which the medicine is absorbed, the fundamental way the drug works (its mechanism of action) remains the same.


Q: What kind of evidence supports the use of Algoflex 400 mg for migraine headaches?

Studies have examined and support the use of Ibuprofen 400 mg for the management of acute migraine headaches. Evidence from research, including controlled trials, indicates that this strength is often considered a first-line agent for the temporary relief of mild to moderate migraine attacks.


Q: What is the meaning of 'acute pain' in the context of Algoflex 400 mg use?

Official regulatory labels use the term 'acute pain' to describe discomfort that is sudden and short-term, such as that associated with toothaches, muscular aches, or menstrual cramps. This term distinguishes the approved short-term use from the long-term management of chronic (long-lasting) pain conditions.


Q: What are the general expectations for pain relief after taking Algoflex 400 mg?

Studies and official product information indicate that the pain-relieving effect generally begins within 30 to 60 minutes after administration. The duration of the relief usually lasts between four and six hours, which aligns with the recommended interval between doses.


Q: Is Algoflex 400 mg used for long-term conditions like arthritis?

Ibuprofen, the active ingredient in Algoflex 400 mg, is approved for the long-term management of chronic inflammatory diseases, such as certain types of arthritis. However, treating chronic conditions typically involves higher total daily doses and is managed under the direct supervision of a healthcare professional as prescription use.


Q: Is Algoflex 400 mg recommended for children?

The 400 mg strength is generally intended for use by adults and adolescents who are 12 years of age and older. For children under the age of 12, official regulatory guidance establishes that use is not recommended unless advised by a healthcare professional, as they require specialized dosing, often in a lower-strength or liquid formulation.


Q: What are the primary differences between Algoflex 400 mg and aspirin?

Both Ibuprofen (Algoflex 400 mg) and aspirin belong to the NSAID class of medicines. A key distinction is that while Ibuprofen is primarily used for pain, inflammation, and fever, aspirin is also widely used at low doses for its unique antiplatelet effects to help prevent heart events.


Q: Can Algoflex 400 mg be used for muscle aches and sprains?

Yes, official regulatory labels state that this medicine is indicated for the temporary relief of minor aches and pains. This generally includes discomfort associated with muscle aches and common musculoskeletal symptoms like sprains.


Q: How quickly does Algoflex 400 mg usually start working?

According to official data on the medicine's absorption, the pain-relieving effect typically begins to be noticeable within 30 to 60 minutes after the tablet is taken.


Q: Does Algoflex 400 mg cause drowsiness or affect driving?

Official safety summaries list dizziness, somnolence (drowsiness), and fatigue as possible side effects associated with Ibuprofen. If these effects are experienced, regulatory warnings state that operating heavy machinery or driving a vehicle should be avoided.


Q: Is there a risk of developing tolerance to Algoflex 400 mg over time?

Ibuprofen, the active ingredient, is not described in official documents as causing physical dependence or the development of tolerance over time when used according to the directions on the label.


Q: Does Algoflex 400 mg have different uses than the lower strength versions?

The lower, over-the-counter strengths are primarily approved for the temporary relief of minor aches, pains, and fever. Higher total daily doses are designated for prescription-only use to treat chronic inflammatory conditions. This shows a distinction between the temporary relief uses and the chronic therapeutic uses.


Q: What is the difference between Algoflex 400 mg and paracetamol/acetaminophen?

Algoflex 400 mg contains Ibuprofen, which is classified as an NSAID and reduces pain, fever, and inflammation. Paracetamol (Acetaminophen) relieves pain and fever but is not an NSAID and does not have the same primary anti-inflammatory action. Furthermore, official safety data indicates they have different risk profiles regarding potential effects on the stomach and liver.


Q: Is Algoflex 400 mg known to cause temporary ringing in the ears?

Ringing in the ears, medically known as tinnitus, is listed in regulatory safety information as a possible, though uncommon, side effect associated with the use of NSAIDs like Ibuprofen. This symptom is a recognized adverse event and should be monitored.


Q: Are there research studies comparing Algoflex 400 mg formulation types (e.g., tablet vs. capsule)?

While a direct comparative study may not be cited, official pharmacokinetics data shows that different formulations, such as a standard tablet versus a liquid-filled capsule, can result in variations in the time it takes for the medicine to be absorbed and reach its peak concentration in the blood.


Q: Are there different brand names for the same active ingredient as Algoflex 400 mg?

Yes, the active ingredient in Algoflex 400 mg is Ibuprofen, which is a common medication available worldwide. This substance is sold under numerous different brand names as well as generic preparations in various countries.


Q: Are generic versions of Algoflex 400 mg considered equivalent?

Regulatory bodies, such as the FDA, require generic versions of Ibuprofen to be classified as bioequivalent to the original brand-name product. This means that a generic version with the same active ingredient and strength is expected to work in the same way and provide the same therapeutic effect.


Q: Do official summaries describe any possible mood changes with Algoflex 400 mg?

Official safety summaries categorize possible rare adverse reactions under the Nervous System or Psychiatric Disorders sections. While not common, these documented effects may include symptoms such as nervousness, anxiety, or depression.


Q: Is Algoflex 400 mg described as causing fluid retention?

Yes, regulatory labels for NSAIDs, including Ibuprofen, state that these medicines have the potential to cause fluid retention, or edema (swelling). This is listed as a factor that may be relevant, particularly for individuals with pre-existing heart conditions or high blood pressure.


Q: Can Algoflex 400 mg interact with herbal supplements?

While the specific interaction list may not name every herbal product, regulatory sources warn that combining Ibuprofen with supplements that have blood-thinning properties may increase the risk of bleeding. This includes certain herbs like garlic, ginkgo, or ginger.


Q: What are the signs of taking too much Algoflex 400 mg?

Regulatory overdose sections state that signs of taking too much can include severe stomach pain, nausea, vomiting, dizziness, and pronounced drowsiness. Severe toxicity can lead to serious health complications, and regulatory guidance stresses the importance of seeking emergency help immediately if an overdose is suspected.


Q: Does Algoflex 400 mg have a warning about light sensitivity?

Light sensitivity, or photosensitivity, is considered a rare but possible side effect associated with the use of Ibuprofen. This is noted in official safety information under skin-related adverse reactions.

How should Algoflex 400 mg be stored and disposed of?

Official Storage and Disposal Requirements

Storage/Disposal Domain Official Regulatory Requirement
Temperature and Environment Store at Controlled Room Temperature, between 20 C and 25 C (68 F and 77 F). Protect the tablets from excessive moisture and heat.
Container and Handling Keep the medicine in its original container and maintain a tightly closed seal. Avoid exposure to freezing temperatures.
Child Protection The product must be kept out of the reach of children.
Disposal Instructions Preferred Method: Use a Drug Take-Back Program or authorized collection site for unused or expired tablets. Alternative: If no take-back option is available, mix the medicine with an undesirable substance (e.g., dirt, coffee grounds), place it in a sealed container, and discard it in the household trash. Do not flush the tablets down a sink or toilet.

Regulatory documents mandate storing Algoflex 400 mg within a precise temperature range and protecting the tablets from excessive moisture to preserve product stability. The container must be kept tightly closed and, critically, the medicine must be secured out of the sight and reach of children. Disposal must follow a regulated pathway, prioritizing take-back programs or utilizing the official household trash method, while prohibiting disposal via wastewater.

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

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