Lesflam

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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 Lesflam

Quick Facts

Property Description
Active ingredient Diclofenac
Form Film-coated tablet
Pharmacological class Nonsteroidal Anti-inflammatory Drug (NSAID)
Common use Relief of pain, inflammation, and fever
Origin Synthetic (Phenylacetic acid derivative)

What Type of Medicine is Lesflam?

Lesflam is a pharmaceutical preparation whose active ingredient is Diclofenac, a compound belonging to the major drug class known as Nonsteroidal Anti-inflammatory Drugs (NSAIDs). This classification establishes the medicine as a non-narcotic agent primarily focused on countering inflammation and pain. Diclofenac functions as an analgesic and anti-inflammatory agent, and the medicine is clinically recognized for its ability to reduce discomfort and swelling.

Diclofenac is a synthetic substance, chemically categorized as a phenylacetic acid derivative. Lesflam is typically prescribed for adults and is designed for systemic action, meaning its effects are distributed throughout the body following absorption, distinguishing it from topical or localized treatments.


Composition and Form of Lesflam

The main active component of Lesflam is Diclofenac, which is typically formulated as the potassium salt (Diclofenac Potassium) or the sodium salt to enhance stability and absorption kinetics. Diclofenac formulations are designed to deliver the active substance into the bloodstream. This means the chosen salt form and tablet design help the medicine start working in the body.

The medicine is commonly presented as film-coated tablets intended for oral administration. The film-coating facilitates ease of swallowing and helps ensure the drug is released effectively in the digestive tract, confirming its composition as a single-ingredient product combined with necessary pharmaceutical excipients.


General Purpose: What Does Lesflam Help Relieve?

Lesflam's general therapeutic purpose is directly linked to its function as an NSAID, which enables it to provide a combination of analgesic (pain relief), anti-inflammatory (reduction of swelling), and antipyretic (fever reduction) effects. Its core utility is to alleviate general discomfort and moderate the body's entire symptomatic response to injury or irritation by interfering with the biochemical signals that drive inflammation. For instance, it can provide relief in scenarios involving joint discomfort or muscle strain. By suppressing these key messengers, the drug aims to restore physiological comfort.

Regulatory References

  1. Diclofenac - StatPearls - NCBI Bookshelf

What side effects are possible with Lesflam?

Possible Side Effects and Safety Information

The safety profile of Lesflam (Diclofenac) is established based on classifications from official regulatory documents, aligning with its function as a Nonsteroidal Anti-inflammatory Drug (NSAID). Officially documented adverse reactions are categorized by frequency and the physiological system affected.

Classification of Officially Documented Adverse Reactions

Classification Example Systems Affected Example Reactions Listed
Common (1% to 10%) Gastrointestinal, Nervous System Nausea, vomiting, headache, dizziness, abdominal pain, elevated liver enzymes, edema.
Rare/Very Rare Gastrointestinal, Cardiovascular, Skin Gastrointestinal bleeding/perforation, hepatitis, severe skin reactions (SJS/TEN), cardiovascular thrombotic events.

High-Level Regulatory Safety Patterns

Official labeling mandates attention to two main serious adverse reaction tiers. First, the risk of serious cardiovascular thrombotic events such as myocardial infarction or stroke is a documented concern that may occur early in treatment and may increase with the duration of use. Second, the risk of serious gastrointestinal adverse events including bleeding, ulceration, or perforation of the stomach or intestines is also documented.

The regulatory profile specifies safety considerations for certain groups, noting that older adults are at an increased risk for serious gastrointestinal adverse events. Furthermore, the medicine is contraindicated for perioperative pain in the setting of Coronary Artery Bypass Graft (CABG) surgery and in patients with known severe allergic-type reactions to NSAIDs.

Overdose and Emergency Response

Overdose and when to seek help

Suspected overdose of Lesflam (Diclofenac) requires immediate emergency medical attention. Official regulatory documentation indicates that overdose may initially present with gastrointestinal symptoms such as nausea, vomiting, epigastric pain, and diarrhea. Neurological manifestations like headache, drowsiness, dizziness, confusion, or tinnitus (ringing in the ears) may also be documented.

Overdose can lead to severe, life-threatening outcomes, including acute renal failure, liver toxicity, seizures, and coma. There is also a documented risk of serious gastrointestinal complications, such as perforation or severe bleeding. As a class effect of Nonsteroidal Anti-inflammatory Drugs (NSAIDs), severe cardiovascular thrombotic events are a risk in an overdose situation.

No specific antidote is known for Diclofenac toxicity. Management is strictly symptomatic and supportive, often requiring continuous monitoring of vital signs, renal function, and potential bleeding in a hospital setting. Administration of activated charcoal may be considered by medical personnel if ingestion occurred recently. Regulatory information notes that elderly patients and those with pre-existing renal or hepatic impairment are at increased risk for severe complications.

Immediate medical help must be sought for any suspected overdose; contact emergency services or the Poison Help hotline right away.

Therapeutic Uses of Lesflam

What Lesflam Treats: Main Uses and Benefits

Lesflam is used to help with symptomatic relief by managing symptoms related to physical discomfort and inflammatory or irritative states that create noticeable physiological strain. The medication is applicable for managing pain, swelling, and stiffness across several key areas.

Therapeutic Domains

It is commonly used across conditions presenting with systemic or localized discomfort, and is applied in contexts that involve certain forms of arthritis, soft-tissue injuries, and specific recurring episodes like headache pain and discomfort associated with menstrual cycles. It is applied in scenarios where additional management of discomfort is required.

In chronic contexts, Lesflam helps improve day-to-day comfort during symptomatic periods by managing symptoms that become more disruptive during flare-ups. In acute scenarios, it assists with maintaining functional stability by managing symptom clusters that may become intense or disruptive. The medication is used in situations involving certain distressing symptoms that are episodic or recurrent, applied during phases when symptoms become more noticeable and short-term symptomatic assistance is needed.


Quick Fact

Quick Fact: Relief for Symptoms related to Inflammatory States

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Lesflam?

This section details the official population-eligibility rules for Lesflam (Diclofenac), as defined by government regulatory authorities.


Populations That Must Not Use Lesflam (Contraindicated)

Lesflam is strictly contraindicated for several populations, including:

  • Patients with documented hypersensitivity or allergic reactions (like asthma or hives) to Diclofenac or any other NSAID (e.g., aspirin).
  • Individuals with an active gastrointestinal ulcer, bleeding, or perforation, or a history of recurrent episodes.
  • Patients with severe heart failure, severe kidney failure, or severe liver failure.
  • Individuals in the setting of coronary artery bypass graft (CABG) surgery.
  • Women who are in the third trimester of pregnancy (after 28 weeks gestation).

Populations With Restricted or Conditional Use

Use is restricted in others, requiring caution and supervision:

  • Children and Adolescents (Under 18): Use is generally not recommended as safety and efficacy are often not established for this age group.
  • Pregnancy and Lactation: Use is not recommended during the first two trimesters of pregnancy and while breastfeeding.
  • Organ Impairment: Patients with mild to moderate kidney or liver impairment require close monitoring.
  • Cardiovascular Risk: Patients with risk factors for cardiovascular events or a history of heart disease require conditional use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Lesflam (Diclofenac) is defined by pharmacokinetic and pharmacodynamic patterns documented in government regulatory labeling.


Formal Contraindications and Prohibitions

Co-administration is officially contraindicated with Aspirin and other Nonsteroidal Anti-inflammatory Drugs (NSAIDs) due to a heightened risk of serious gastrointestinal events, including bleeding. Use is also formally prohibited for managing perioperative pain associated with Coronary Artery Bypass Graft (CABG) surgery. Furthermore, regulatory documents in some regions contraindicate Lesflam in patients with established cardiovascular diseases, such as ischemic heart disease.


Pharmacokinetic Exposure Changes

Lesflam can significantly modify the plasma concentrations of certain co-administered medicines. Specifically, it can increase the exposure and prolong the half-life of medicines such as Lithium, Methotrexate, and Digoxin. Conversely, medicines like Voriconazole are documented to substantially increase the Cmax and AUC of Lesflam itself.


Pharmacodynamic and Substance Interactions

Co-administration with Anticoagulants, SSRIs, and SNRIs results in an officially increased risk of bleeding due to additive effects on hemostasis. Lesflam may also diminish the antihypertensive and natriuretic effects of medications like ACE Inhibitors, ARBs, and Diuretics. This kidney-related interaction risk is notably heightened in the elderly or those with existing renal impairment. Regulatory guidance also notes that alcohol consumption may increase the risk of stomach bleeding.

Mechanism of Action

How Lesflam Works

Molecular Target and Inhibition of the RANKL-RANK Axis

Lesflam is a highly specific monoclonal antibody that functions as an inhibitor of the Receptor Activator of Nuclear factor Kappa-B Ligand (RANKL). RANKL is a critical protein expressed by cells such as osteoblasts and T-lymphocytes. Lesflam binds with high affinity to both the soluble and membrane-bound forms of RANKL. This binding prevents the interaction of RANKL with its cognate receptor, RANK (Receptor Activator of Nuclear factor Kappa-B), which is located on the surface of pre-osteoclasts and mature osteoclasts.


Mechanistic Cascade and Bone Turnover Regulation

The blockade of the RANKL-RANK interaction is the key upstream event. This cascade inhibits the maturation, function, and survival of osteoclasts. The resultant decrease in osteoclast activity leads to an uncoupling of bone formation and bone resorption, primarily by reducing osteoclast-mediated bone resorption. This primary mechanism regulates the overall rate of bone turnover at the physiological level.

Dosage and Administration Information

The administration of Lesflam, whose active ingredient is Diclofenac, involves specific procedures. As a film-coated tablet, Lesflam is for oral administration. The tablets must be swallowed whole with a liquid and should not be crushed, chewed, or divided, which ensures the integrity of the formulation is maintained. The medicine is generally taken with or immediately after food to facilitate proper use and minimize discomfort, and patients are generally advised to remain upright for a short period after taking the dose.


Dosage and Frequency

The fundamental instruction guiding use is the principle to use the lowest effective dosage for the shortest duration necessary. The typical total daily dosage regimen for adults is generally between 100 mg and 150 mg, which is administered in divided doses two or three times throughout the day. The maximum daily dose for general pain and inflammation management is typically limited to 150 mg.


Population and Procedural Rules

Certain patient populations require specific considerations. Older adults, particularly those who are frail, are instructed to begin treatment using the lowest possible starting dose. For the handling of a missed scheduled dose, the instruction is to skip the missed dose entirely and resume the next scheduled administration at the regular time, without taking a double quantity. Furthermore, the medicine is generally not recommended for children under 14 years of age.

Recent Clinical Evidence

Lesflam: Recent Clinical Evidence

Evidence for Use in Chronic Inflammatory Joint Conditions

The core clinical evaluation of Lesflam (oral diclofenac) was evaluated in research exploring how symptoms change over time for conditions characterized by fluctuating or episodic manifestations, such as Osteoarthritis (OA) and Rheumatoid Arthritis (RA). The research primarily consists of short-to-intermediate-term Randomized Controlled Trials (RCTs) and systematic reviews, often comparing the medicine against placebo or other active treatments. Studies monitored outcomes related to physical discomfort and functional imbalance, such as pain intensity and the status of physical function.

The evidence for this area was often assigned a High grading in regulatory assessments for measuring short-term symptomatic outcomes. Research highlights that core efficacy trials often have follow-up durations that were limited, typically lasting only up to 12 weeks. Therefore, limited information for long-term outcomes is available from these key studies, and the effects on sustained comfort are not fully established.


Evidence for Use in Acute Pain and Short-Term Inflammation

Lesflam was studied for conditions involving periods of heightened symptoms or acute or disruptive episodes, such as pain following specific surgical procedures and primary dysmenorrhea (menstrual discomfort). The research explored short-term symptom changes using single-dose and short-term RCTs. In these studies, researchers examined outcomes related to episodic or acute changes, such as the time to measurement of relief and the consumption of supplemental pain medication.

It is important to note that these studies were often conducted in specialized research scenarios, meaning the results apply only to the populations studied. Due to the nature of acute conditions, no long-term evidence exists for this indication.


What is Still Uncertain About the Research

Research consistently highlights certain limitations and gaps in the evidence landscape. In terms of research gaps, regulatory documentation notes that comparative evidence against all available treatment options is not always fully established for every single indication. Furthermore, data for certain groups remain insufficient or are still emerging, particularly for pediatric populations or those with complex comorbid conditions. Studies help show what has been observed so far, but the research does not determine whether an individual will respond similarly to the group patterns observed.

Key Studies & References WHO Model Lists of Essential Medicines (Diclofenac entry and therapeutic use guidance)

Frequently Asked Questions (FAQ)

Common questions about Lesflam (FAQ)

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

A: Regulatory instructions state that if a scheduled dose is missed, the patient should skip the missed dose entirely. The patient should then resume the regular dosing schedule for the next planned administration without taking a double quantity to make up for the one that was missed.

Q: Is Lesflam generally safe for older adults (seniors)?

A: Official labeling notes that older adults are instructed to begin treatment using the lowest possible dose. This is because official documents indicate an increased risk of serious gastrointestinal adverse events for older individuals when compared to younger individuals.

Q: What does it mean if my doctor says Lesflam is 'contraindicated' for me?

A: The term contraindicated means a drug must not be used because a patient has a specific condition or factor that makes taking the medicine potentially harmful. Regulatory authorities state that Lesflam must be strictly avoided in these particular situations.

Q: Can Lesflam be used by women who are in the first or second trimester of pregnancy?

A: Official guidance states that the use of Lesflam (Diclofenac) is generally not recommended during the first and second trimesters of pregnancy. Use is strictly prohibited in the third trimester.

Q: How long can a person safely take Lesflam?

A: Regulatory instructions emphasize using the lowest effective dose for the shortest duration necessary. Official warnings indicate that the documented risk of serious cardiovascular and gastrointestinal events increases with the length of use.

Q: Are there any major food or drink restrictions while taking Lesflam?

A: The medicine is generally taken with or immediately after food to help minimize stomach discomfort. Regulatory guidance also specifically notes that consuming alcohol may increase the risk of stomach bleeding.

Q: Can a person stop taking Lesflam suddenly?

A: The active ingredient in Lesflam is Diclofenac, which is not classified as a controlled substance by regulatory bodies. Therefore, official documentation does not indicate a risk of physical dependence or severe withdrawal symptoms if stopped.

Q: What should be discussed with a healthcare provider before starting Lesflam?

A: Discussions with a provider should cover important factors in a person’s health history. These typically include any history of gastrointestinal bleeding or ulcers, cardiovascular disease or risk factors, kidney or liver impairment, and any prior allergic reactions to Nonsteroidal Anti-inflammatory Drugs (NSAIDs).

Q: Is Lesflam similar to other common medicines for the same condition?

A: Yes, Lesflam's active ingredient, Diclofenac, belongs to the pharmacological class known as Nonsteroidal Anti-inflammatory Drugs (NSAIDs). This class includes several other commonly used medicines that work to help relieve pain and inflammation.

Q: Why is Lesflam sometimes called a 'selective' treatment?

A: Diclofenac is generally classified as a Nonsteroidal Anti-inflammatory Drug (NSAID). Some pharmacological literature notes that, when compared to other NSAIDs, it is described as exhibiting a greater potency for inhibiting the COX-2 enzyme over the COX-1 enzyme.

Q: Does Lesflam have a risk of addiction or dependence?

A: No. Diclofenac, the active ingredient in Lesflam, is not classified as a controlled substance by regulatory bodies. Therefore, official documentation does not indicate a risk of addiction or physical dependence.

Q: How quickly can a person expect to feel the effects of Lesflam?

A: The onset of action may vary among individuals. However, formulations of the active ingredient are documented in clinical studies to provide a relatively rapid onset of relief.

Q: How long does Lesflam stay in your system after stopping?

A: The active ingredient in Lesflam has a documented half-life of approximately 1 to 2 hours. This means the amount of the drug in the body typically decreases relatively quickly after the last dose is taken.

Q: What are the most commonly reported side effects of Lesflam?

A: The most frequently reported adverse reactions documented in regulatory materials involve the digestive system. These often include stomach discomfort, nausea, abdominal pain, and headache.

Q: Do side effects from Lesflam go away over time?

A: Common adverse reactions, such as mild digestive issues or headache, are often described as temporary. These effects may sometimes resolve as the body adjusts to the medicine.

Q: Can Lesflam cause weight gain or weight loss?

A: Edema (fluid retention) is listed as a common adverse reaction, which may result in a change in body weight. Additionally, rapid weight gain is documented as a potential symptom of overdose.

Q: Is it true that Lesflam can affect sleep patterns?

A: Yes. Adverse reaction profiles reported in official documentation include central nervous system effects. These effects include both drowsiness (feeling sleepy) and insomnia (trouble sleeping).

Q: Can I take Lesflam if I am already taking an over-the-counter pain reliever?

A: Regulatory documents explicitly prohibit co-administration with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs), including aspirin, due to a documented increased risk of serious gastrointestinal events. Some non-NSAID pain relievers do not carry the same specific interaction warning.

Q: Does Lesflam interact with herbal supplements?

A: Patients are generally advised in official communications to inform their healthcare provider about all medicines, vitamins, and herbal products being taken. This is particularly important because some supplements may affect blood clotting and could increase the risk of bleeding.

Q: What is the evidence base for Lesflam's effectiveness?

A: The evidence base primarily relies on short-to-intermediate-term Randomized Controlled Trials (RCTs). These studies have been assessed highly for measuring short-term symptomatic relief of pain and improvement in functional status.

Q: Does Lesflam cause anxiety or mood changes?

A: Adverse reactions reported in official regulatory labeling include changes in mood and mental state. These documented effects include confusion, nervousness, and anxiety.

Q: Does Lesflam affect birth control or hormonal medicines?

A: Specific interaction warnings are noted for the use of Lesflam (Diclofenac) with certain hormonal contraceptives. This is primarily an interaction with formulations containing drospirenone, due to a documented risk of increasing blood potassium levels.

Q: Does Lesflam affect the liver?

A: Yes, Diclofenac is known to cause elevations of one or more liver enzymes, which may occur during treatment. Official documents advise discontinuing use if abnormal liver tests persist or worsen.

Q: Is Lesflam safe to take with common vitamins?

A: While a general advisory is to discuss all supplements, specific interaction warnings are noted for certain supplements. For instance, combining the medicine with Fish Oil may increase the risk of bleeding due to documented additive effects on blood clotting.

Q: Are there any restrictions on driving or operating machinery while taking Lesflam?

A: Official patient information advises caution with activities requiring alertness. Due to potential side effects like dizziness, headache, or drowsiness, patients are advised against driving or operating machinery until the effects of the medicine are clearly known and these activities can be performed safely.

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

A: Clinical studies have demonstrated that Lesflam resulted in measurable differences in outcomes related to physical discomfort and functional status when compared to an inactive placebo. Regulatory assessment reports note a symptomatic improvement compared to placebo.

Q: Is Lesflam a newer or older type of medicine?

A: The active ingredient, Diclofenac, is a chemical compound that was first introduced in the 1970s, making it an established medicine. However, new formulations and delivery systems have continued to be developed since then.

Q: Does Lesflam make you feel tired or drowsy?

A: Yes, drowsiness (sleepiness) is listed in the official documents as a reported adverse reaction. Patients should be aware of this potential effect, especially when starting the medicine.

Q: What is the risk of an allergic reaction to Lesflam?

A: Regulatory labeling states that the medicine is strictly contraindicated in patients with a history of hypersensitivity to Diclofenac or other NSAIDs. Its use is strictly contraindicated in these particular situations. Serious, life-threatening allergic reactions have been reported with this class of medicine.

Q: Is it normal to feel no change immediately after starting Lesflam?

A: While some formulations are designed for rapid onset of relief, the full therapeutic benefit may take longer to achieve. Patients are advised to consult their healthcare provider if they have concerns about the expected effect.

Q: Why is Lesflam not available over the counter?

A: Oral forms of the active ingredient are typically available by prescription only. Its status is related to the documented potential for serious side effects, such as cardiovascular events and gastrointestinal bleeding, which necessitate professional medical oversight.

Q: Does Lesflam have the potential for misuse?

A: No. Diclofenac, the active ingredient in Lesflam, is not classified as a controlled substance. As such, official documentation does not indicate a potential for misuse.

Q: What types of heart conditions are a concern when taking Lesflam?

A: Official warnings highlight the risk of serious cardiovascular thrombotic events, such as heart attack or stroke. The medicine is strictly contraindicated for managing pain following Coronary Artery Bypass Graft (CABG) surgery.

Q: Does Lesflam interact with common supplements like Vitamin D or fish oil?

A: Interaction warnings are noted for Omega-3 fatty acid (fish oil) supplements. Combining them with Lesflam may increase the risk of bleeding due to documented additive effects on blood clotting.

Q: What is the experience of people who have used Lesflam for several months?

A: Research evidence primarily consists of short-to-intermediate-term studies. The core clinical trials often had follow-up durations that were limited, meaning detailed information on the long-term outcomes and experience is less established.

Q: Does Lesflam affect fertility?

A: Official labeling notes that, like other drugs in its class, Lesflam may temporarily affect ovulation.

How should Lesflam be stored and disposed of?

How to Store and Dispose of Lesflam

Official regulatory guidelines for pharmaceutical products outline strict requirements to ensure safety and integrity.

Storage Requirements

Condition Requirement
Temperature Store according to the temperature range specified on the product label, typically within controlled room temperature limits (15 C to 30 C).
Protection Keep the medicine in its original container and ensure it is stored out of the sight and reach of children and pets.
Handling Avoid storage in areas prone to heat, moisture, or light unless specified on the labeling. Do not use the drug past the expiration date.

Disposal Instructions

The preferred method for disposing of unused or expired medication is through a formal drug take-back program. If a take-back program is unavailable, drugs not listed as flushable should be mixed with an unappealing substance, such as dirt or used coffee grounds, sealed in a bag, and then placed in household trash. Personal information on all empty packaging must be completely removed or obscured prior to disposal.

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

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