Diflam

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Diflam

Quick Facts

Property Description
Active ingredient Diclofenac
Form Topical (Gel, Cream) and Oromucosal (Solution, Spray, Lozenge)
Pharmacological class Non-Steroidal Anti-Inflammatory Drug (NSAID)
General purpose Symptomatic relief of pain and inflammation
Origin Synthetic

What Type of Medicine is Diflam?

Diflam is a pharmaceutical preparation whose primary active substance is Diclofenac, a synthetic compound classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID). This medication is chemically identified as a phenylacetic acid derivative, a structure that places it within a specific subgroup of anti-inflammatory agents. This classification relates to its therapeutic ability to modulate the body's inflammatory response. The specific formulation of Diflam frequently positions it for localized action rather than systemic treatment, differentiating its primary focus within the broader Diclofenac family.

Composition and Available Forms of Diclofenac

The core of Diflam is the single-ingredient product, Diclofenac, often formulated using salts like Diclofenac diethylamine for enhanced absorption in certain topical preparations. The identity of Diflam is strongly linked to its range of oromucosal dosage form(s), which include specialized oral rinse (oromucosal solution), lozenges, throat spray, and localized gel and emulsion preparations. This range facilitates a topical or oromucosal route of administration, allowing the drug to act predominantly at the application site. These forms are intended for short-term localized symptomatic treatment of pain and inflammation.

General Purpose: Relief from Pain and Inflammation

The general purpose of Diflam is to provide symptomatic relief by easing discomfort and reducing the local physical manifestations of inflammation. This utility stems from its status as an NSAID, which allows it to intervene in the biological pathways responsible for generating pain. For example, the oromucosal forms are commonly used for temporary relief from sore throat discomfort or minor mouth irritation. This action offers the fundamental benefit of simultaneously achieving analgesic and anti-inflammatory effects, which is the cornerstone of the drug’s usefulness.

Regulatory References

  1. Non-Steroidal Anti-Inflammatory Drug (NSAID)

What side effects are possible with Diflam?

Diflam (benzydamine hydrochloride) is primarily used for its local analgesic and anti-inflammatory properties. The documented safety profile focuses on local reactions due to its topical administration.

Adverse Reactions Overview

Adverse effects are categorized by the system-organ class and frequency, adhering to standard regulatory frameworks (e.g., European Medicines Agency/ICH frequency bands):

Frequency System Organ Class Undesirable Effects (Examples)
Uncommon ( geq1/1,000 to <1/100) Gastrointestinal disorders Oral numbness (hypoesthesia), stinging feeling/oral pain in the mouth.
Very Rare ( <1/10,000) Respiratory, Skin, Immune System Laryngospasm, bronchospasm, pruritus, urticaria, rash.
Not Known (cannot be estimated) Immune System, Skin Anaphylactic reactions (potentially life-threatening), angioedema.

The stinging sensation is a common local reaction that may subside upon continued use, but treatment discontinuation is advised if it persists.

Safety-Related Restrictions and Considerations

Serious Adverse Reactions: The most serious reactions documented are hypersensitivity events, including anaphylactic reactions, laryngospasm, and bronchospasm. These events are classified as very rare or of unknown frequency.

Contraindications and Warnings: Diflam is contraindicated in individuals with known hypersensitivity to the active substance or excipients. Caution is required for patients with a history of bronchial asthma, as bronchospasm may be precipitated. The product is also not advised in patients with hypersensitivity to acetylsalicylic acid or other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs).

Dose and Exposure: Uninterrupted topical treatment should not exceed seven days unless under medical supervision. While systemic absorption is low, accidental ingestion of large quantities (well above the therapeutic dose) may lead to gastrointestinal symptoms (e.g., nausea, vomiting) and central nervous system effects (e.g., dizziness, hallucinations, agitation).

This structure establishes the risk profile as primarily low-risk local effects, alongside a very low but serious risk of hypersensitivity, necessitating caution in susceptible populations.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory documents define the Diclofenac overdose profile by detailing the potential for progression to systemic toxicity following excessive exposure or ingestion. The management is confirmed as symptomatic and supportive, as no specific antidote is known.


Documented Overdose Presentations and Actions

Domain Official Regulatory Statement
Documented Manifestations Overdose signs include gastrointestinal effects (nausea, vomiting, abdominal pain), CNS effects (headache, dizziness, drowsiness, confusion), and severe outcomes such as seizures, acute renal failure, and hepatotoxicity.
Severe Outcomes Officially listed life-threatening risks include gastrointestinal hemorrhage or perforation, coma, and potential myocardial infarction or stroke associated with systemic NSAID toxicity.
Population-Specific Risk Elderly patients are documented as having an increased risk for serious and potentially fatal gastrointestinal events following overexposure.
Immediate Action Required Users must seek immediate medical attention or contact a Poison Control Center (or equivalent emergency services) immediately upon suspected overdose.

Connection to the Overall Overdose Profile

Regulatory information establishes that overdose involves multi-system risk affecting the GI tract, liver, and kidneys. This requires intensive supportive care and close hospital surveillance, emphasizing that the mandatory action is to seek immediate help for any suspected overexposure.

Therapeutic Uses of Diflam

What Diflam Treats: Main Uses and Benefits

The medication is intended to assist in easing symptoms related to painful and inflammatory states of the mouth and throat. The core therapeutic utility of Diflam is segmented into domains where short-term symptom management is appropriate, helping address symptom clusters associated with conditions like sore throat, pharyngitis, tonsillitis, mouth ulcers, and pain following dental or surgical procedures.

Diflam is commonly used when symptoms intensify and supportive relief is needed, supporting the patient during difficult episodes by easing distress. The product is applied in addressing instances where symptoms create noticeable functional strain or lead to temporary discomfort.

“This medication is utilized in contexts marked by increased discomfort or tension where supportive relief is needed.”


Quick Fact: Supports Easing Oral and Throat Discomfort

Diflam is applied across domains where additional symptomatic support is needed, and generally contributes to easing the overall symptom load during periods of heightened symptoms.

Eligibility and Restrictions for Use

The eligibility for Diflam (Diclofenac localized forms) is defined by official regulatory criteria, primarily revolving around the risks associated with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) and specific population vulnerabilities.

Contraindications (Must Not Use)

Use of Diflam is contraindicated (absolutely prohibited) for individuals who have a known hypersensitivity or history of allergic reactions, such as aspirin-sensitive asthma, to Diclofenac or any other NSAID. It must also not be used by patients in the setting of Coronary Artery Bypass Graft (CABG) surgery or for topical application on damaged skin, open wounds, or eczema.

Restricted Populations

The medicine is contraindicated during the third trimester of pregnancy (from 30 weeks gestation) and is generally not recommended in the first and second trimesters unless medically necessary. For children and adolescents, use is typically contraindicated for those under 14 years of age due to insufficient safety and efficacy data for some formulations.

Older adults may use the medicine but require careful monitoring due to an increased likelihood of age-related issues concerning the heart, kidney, or gastrointestinal tract. Use is generally avoided in patients with advanced renal disease or severe heart failure.

What should I know about interactions with other medicines?

Official Regulatory Interaction Profile

Regulatory documents for diclofenac, the active ingredient in Diflam, identify several medicinal products and circumstances that interact with its low-level systemic activity, primarily reflecting its classification as a Non-Steroidal Anti-Inflammatory Drug (NSAID).

Category Interacting Products / Constraint
Interactions Affecting Hemostasis Co-administration with anticoagulants (e.g., Warfarin) or other agents that interfere with hemostasis (e.g., SSRIs/SNRIs) increases the officially documented risk of bleeding; monitoring is advised.
Antihypertensive and Diuretic Agents Diclofenac may diminish the antihypertensive effect of medicines like ACE Inhibitors and ARBs, and reduce the natriuretic effect of Diuretics (e.g., Furosemide).
Exposure-Modifying Interactions Concomitant use with Digoxin can increase the serum concentration and prolong the half-life of Digoxin.
Prohibited Combinations The drug is contraindicated for use in the perioperative setting of Coronary Artery Bypass Graft (CABG) Surgery. Use with analgesic doses of aspirin or other NSAIDs is not generally recommended.
Local Administration Constraint Avoid concomitant use of other topical products (including sunscreens and cosmetics) on the treated skin site.
Population-Specific Risk Co-use with ACE Inhibitors or ARBs in the elderly or volume-depleted patient populations may result in deterioration of renal function.

The overall regulatory profile structures these interactions to ensure patients and healthcare professionals are aware of potential systemic risks, even with low systemic absorption, defining constraints and requirements based strictly on officially established outcomes.

Mechanism of Action

️ Molecular Blockade of COX Enzymes

The active ingredient, Diclofenac, exerts its action by functioning as a competitive inhibitor of the Cyclooxygenase (COX) enzymes, specifically targeting the COX-2 form which is highly active during irritation. By binding to these enzymes, the medicine blocks the conversion of arachidonic acid into various signaling molecules.


Modulation of Local Prostanoid Mediators

Blocking the COX enzymes immediately interrupts the Arachidonic Acid Cascade, leading to a significant reduction in the local biosynthesis of Prostaglandin E2 ( PGE2) and other related mediators. The modulation results in the attenuation of chemical signals related to the physiological processes of inflammation, such as localized vasodilation and increased fluid leakage, thereby influencing the local signaling environment within the targeted pathways.


Decoupling of Peripheral Pain Signaling

The subsequent reduction in PGE2 concentration limits the sensitization of peripheral nociceptors (pain receptors). PGE2 normally lowers the threshold at which these nerves signal discomfort; therefore, by inhibiting its creation, the medicine functionally decouples the inflammation and pain signaling processes, raising the threshold for nerve activation and influencing the local responsiveness of the targeted pathways.

Dosage and Administration Information

The usage of Diflam products is defined by the required route of administration, which is either oromucosal for localized application in the mouth and throat or cutaneous for application directly to the skin. Usage guidelines typically involve the use of the lowest effective dosage for the shortest duration necessary, with administration generally limited to approximately 7 days without medical review.

For topical formulations containing diclofenac, the dosing regimen is specific to the strength. For example, the 1% gel is applied four times daily in specific amounts, such as 4 grams for lower extremities. Conversely, a higher-strength gel (e.g., 2.32%) is typically applied two times daily, using an amount of 1 to 4 grams. Application requires gently rubbing the product into clean, intact skin and immediately washing the hands, unless the hands are the site of treatment. The medication must not be applied to more than two body areas simultaneously.

Oromucosal forms, such as solutions and sprays, are used on an as-needed basis, generally every 1.5 to 3 hours. When using the solution, 15 mL is used undiluted as a gargle or rinse for approximately 20 to 30 seconds, and the solution must be spat out and not swallowed. Population-specific use rules generally restrict topical formulations to those 14 years and older, while the oromucosal forms have usage parameters for children 6 years of age and older.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Diflam


Evidence for Symptomatic Relief of Acute Mouth and Throat Pain

The localized forms of Diclofenac, such as sprays and lozenges, was evaluated in research exploring acute inflammation and pain affecting the mouth and throat, conditions associated with acute or disruptive episodes like sore throat. The primary evidence base consists of short-term Randomized Controlled Trials (RCTs) and subsequent systematic reviews that combine the findings. These research efforts applied in studies examining patient-reported experiences of discomfort and were used in research exploring how symptoms change over time.

Researchers primarily monitored outcomes related to physical discomfort, specifically the intensity of spontaneous throat pain and the pain experienced when swallowing (odynophagia). The studies examined these symptoms in adults presenting with mild-to-moderate discomfort. The evidence for this indication is based on a volume of available trials and systematic reviews. However, these trials apply only to the populations studied and the follow-up durations were limited. Long-term effects are not fully established, as the existing research explores short-term symptom changes over only a few days of use.


Evidence for Localized Musculoskeletal Pain and Inflammation

Topical Diclofenac, in its gel or cream forms, was evaluated in studies focused on outcomes reflecting daily functioning or activity level linked to localized pain. The research structure includes numerous RCTs and comprehensive meta-analyses; these studies examined conditions such as minor soft-tissue injuries and localized osteoarthritis affecting the knee or hand. Findings describe patterns observed in the studies where topical Diclofenac groups was associated with differences in the pattern of reported discomfort compared to groups using an inactive gel or cream. The research highlights changes measured during the study period over observation intervals that typically spanned up to 12 weeks.

The research base for topical Diclofenac in these indications includes a notable number of available systematic reviews and RCTs. However, the sample sizes were modest in some individual trials, and the results apply only to the populations studied, often excluding patients with severe joint damage. The reported difference in measured outcomes compared to the inactive vehicle was sometimes reported as small in magnitude; study results reflect the specific conditions under which they were conducted.

Frequently Asked Questions (FAQ)

Common questions about Diflam (FAQ)

Q: How long can a burning or stinging feeling last after using the oral rinse or spray?

Regulatory product information describes the stinging sensation as a local reaction that may occur. Information in the product label suggests this sensation is usually transient and may lessen with continued use. However, official documents do not specify a precise duration for how long the stinging lasts after a single dose.

Q: Are headaches or dizziness commonly reported side effects with the oral spray?

The regulatory safety profiles for the active ingredients sometimes include central nervous system effects such as dizziness and headache. According to official information, the frequency of these effects following localized application is generally low or unknown.

Q: Does the local application method of Diflam help minimize the risk of systemic side effects?

Official product information indicates that the local application method, such as a spray or rinse, results in low systemic absorption of the active ingredients. This low absorption rate is the mechanism that helps to restrict the likelihood of generalized side effects associated with the medicine.

Q: Can Diflam be used alongside common daily medications or supplements?

Regulatory labels provide specific warnings for known interactions with certain prescription medications, such as blood thinners and some blood pressure medicines. Official drug documents prioritize known interactions with prescription medicines; for supplements like vitamins or minerals, official labels typically do not provide interaction guidance.

Q: Does accidentally swallowing a small amount of the mouth rinse or gargle pose a high risk?

While the instructions mandate that the solution be spat out and not swallowed, regulatory warnings state that symptoms are only expected after the accidental ingestion of large quantities of the product. Regulatory documents indicate that symptoms are typically only expected after the accidental ingestion of large quantities, thereby reducing concern over a small, accidental amount.

Q: Can Diflam cause gastrointestinal discomfort, even when used as a local treatment?

Gastrointestinal symptoms (like nausea or vomiting) are noted in the overall safety profile for the active ingredient's class. However, these effects are primarily mentioned in the context of accidental ingestion of large quantities, rather than from normal local use of the product.

Q: Is Diflam a suitable treatment for tonsillitis or pharyngitis pain?

Official product information indicates that the medicine is indicated for the symptomatic relief of pain and inflammation associated with a range of conditions. These conditions generally include pain related to tonsillitis and pharyngitis.

Q: What specific oral health conditions is Diflam indicated for besides general sore throat?

Official regulatory labels list several conditions for which Diflam provides symptomatic relief. This typically includes discomfort related to gingivitis (gum inflammation), mouth ulcers, and certain types of pain following dental procedures.

Q: Is Diflam generally available over-the-counter (OTC) or does it require a prescription?

The classification of the product can vary depending on the country and the specific formulation (e.g., lozenge vs. gel). However, many low-strength oromucosal forms of the active ingredients are classified by health authorities for non-prescription (over-the-counter) sale.

Q: Does the Diflam oral rinse contain alcohol, and is this a safety concern?

Regulatory documents list all product excipients. Many oral solutions containing the active ingredient include ethanol (alcohol) as a component. Specific considerations related to the presence of alcohol are addressed in the regulatory label.

Q: Are there any considerations for using Diflam products while breastfeeding?

Regulatory labels provide specific information for use during lactation. Official documents indicate whether the active ingredient is believed to be excreted in human milk and will indicate if use is not recommended or contraindicated during this period based on the official assessment.

Q: Why do some Diflam lozenges contain Isomalt and is it relevant for specific patient groups?

Isomalt is listed in regulatory documents as a common excipient and is used as a sugar substitute or bulking agent in some formulations. The label contains a warning that Isomalt may have a mild laxative effect if consumed in high quantities.

Q: What should be done if sore throat symptoms persist beyond the recommended treatment duration?

Official product information states that if symptoms persist for more than the maximum recommended duration (e.g., 7 days) or if they worsen, official product information directs that professional medical advice should be sought.

Q: Does Diflam contain any ingredients that may be a concern for individuals with phenylketonuria?

The regulatory label will specify if the formulation contains Aspartame (E951) as an excipient. If Aspartame is present, the label includes a warning that this ingredient is a source of phenylalanine and must be noted for individuals with phenylketonuria (PKU).

How should Diflam be stored and disposed of?

How to Store and Dispose of Diflam

Official regulations define the conditions necessary to maintain the stability of Diflam (diclofenac/benzydamine) formulations.


Storage Requirements

Temperature: Store the product within the range specified on the label, typically below 25^circC or 30^circC, depending on the formulation. It is explicitly required not to refrigerate or freeze the product.

Protection: The product must be kept in its original container/carton to protect it from light, and the container should be tightly closed.

Stability: Some liquid forms have a limited in-use stability period (e.g., 6 months) after the first opening. All medicine must be kept out of the sight and reach of children.


Disposal Instructions

Expired or unused Diflam must not be disposed of in household waste or wastewater. Disposal must be carried out in accordance with local regulatory requirements, often through a pharmacy take-back scheme.

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

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