Oflomac-M

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Oflomac-M

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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 Oflomac-M

Quick Facts

Property Description
Active Ingredients Ofloxacin, Metronidazole
Form Oral Tablet
Pharmacological Class Antimicrobial Agent
Origin Synthetic (Fluoroquinolone & Nitroimidazole)
Common Use Treatment of Mixed Bacterial/Protozoal Infections

What Type of Medicine is Oflomac-M?

Oflomac-M is a synthetic Fixed-Dose Combination (FDC) medicinal product classified as a Broad-spectrum Antimicrobial Agent for Systemic treatment, typically administered as an Oral Tablet. A Fixed-Dose Combination refers to a single dosage form containing two or more active drugs. This FDC approach is used to ensure concurrent administration of agents necessary for comprehensive coverage against diverse infections. The use of antimicrobial FDCs incorporates the benefit of enhanced coverage in cases of potential uncertainty regarding causative microorganisms.


What Are the Active Ingredients in Oflomac-M?

The formulation contains two distinct Active Ingredients: Ofloxacin and Metronidazole. Ofloxacin belongs to the Fluoroquinolone antibiotic class, which is designed to inhibit bacterial DNA replication. Metronidazole is classified as a Nitroimidazole antibiotic and Antiprotozoal agent, targeting a different set of microbes. This pairing provides simultaneous action against two different microbial groups, distinguishing it from single-agent therapies.


Why is Oflomac-M a Dual-Action Combination?

The primary general purpose of this dual-action design is to achieve Broad-spectrum activity to manage diverse microbial threats. This combination is effective against both aerobic bacteria and anaerobic bacteria, as well as certain protozoal infections. The combining of these two distinct pharmacological classes is a clinical approach used for the empirical treatment of Mixed Infections. This strategy ensures simultaneous targeting of pathogens susceptible to Ofloxacin and those susceptible to Metronidazole, providing a single, comprehensive antimicrobial strategy.

What side effects are possible with Oflomac-M?

Official Safety Profile and Adverse Reactions

The possible side effects of Oflomac-M are officially documented in regulatory information according to their frequency and the physiological system affected, following standard System-Organ Classification (SOC). The safety profile is a composite of the risks associated with Ofloxacin (a fluoroquinolone) and Metronidazole (a nitroimidazole).

Commonly documented adverse reactions include disturbances in the Gastrointestinal System, such as nausea, vomiting, abdominal discomfort, and the specific event of a persistent metallic taste. Effects on the Nervous System like headache, dizziness, and insomnia are also frequently noted.


Serious Adverse Reactions and Safety Constraints

The regulatory profile explicitly defines certain Serious Adverse Reactions (SARs). For the Ofloxacin component, these include the risk of tendinitis and tendon rupture, documented as potentially irreversible, and the occurrence of peripheral neuropathy (numbness/tingling). The label also notes severe hypersensitivity reactions and the risk of Clostridioides difficile-associated diarrhea (CDAD).

Safety constraints are officially established based on the Metronidazole component, mandating an absolute avoidance of alcohol and products containing propylene glycol during therapy and for a period after cessation, due to the risk of a severe Disulfiram-like reaction. Furthermore, population-specific safety considerations are documented for older adults (due to increased tendon risk) and patients with renal or hepatic impairment, where adverse event risk may increase.

Certain adverse reactions, such as tendon damage, are documented as having a delayed onset that can occur months after treatment completion, which is a key time-related safety pattern noted in regulatory texts.

Overdose and Emergency Response

Overdose and When to Seek Help — Official Regulatory Information for Oflomac-M

This profile summarizes the official regulatory documentation regarding overdose manifestations and mandated emergency actions for the active components (Ofloxacin and Metronidazole).

Overdose Scope

Domain Official Regulatory Statement
Documented overdose presentations Acute overdose may lead to nausea, vomiting, and ataxia. Manifestations associated with the Ofloxacin component include CNS effects such as convulsions, tremors, confusion, and toxic psychosis.
Physiological systems affected (as stated in label) The Central Nervous System, Cardiovascular System (risk of prolongation of the QT interval), and Peripheral Neurological System (risk of peripheral neuropathy) are systems documented as affected by overdose.
Population-specific overdose notes (if applicable) Monitoring for adverse events is required in patients with severe hepatic impairment and end-stage renal disease (ESRD) due to the documented potential for metabolite accumulation.
Emergency-response statements (as written in official documents) Management consists of symptomatic and supportive therapy. There is no specific antidote for Metronidazole overdose, though hemodialysis is noted as a procedure that can remove a portion of the administered dose.
When immediate medical help is required (label-derived phrasing only) Contact a health care professional immediately if serious central nervous system side effects such as confusion or hallucinations are experienced.

Resulting Overdose Structure

Official overdose statements:

  • An acute overdose may present with documented gastrointestinal symptoms, ataxia, and severe CNS effects, including convulsions and confusion.
  • Severe outcomes include the risk of prolongation of the QT interval, toxic psychosis, and peripheral neuropathy following high-dose exposure.
  • Patients must contact a health care professional immediately if serious side effects, such as confusion or hallucinations, are experienced.

Connection to the overall overdose profile (2–4 sentences):

Regulatory documents define the overdose profile by listing specific, documented neurological and cardiovascular manifestations associated with the two components. This list of severe potential outcomes directly establishes the condition under which immediate medical attention must be sought, with regulatory guidance noting the absence of a specific antidote and defining the limits of supportive procedural management, such as the use of hemodialysis for the Metronidazole component.

Therapeutic Uses of Oflomac-M

What Oflomac-M Treats: Main Uses and Benefits

Oflomac-M is commonly used across conditions presenting with acute episodes. This medicine is generally considered relevant in contexts involving heightened systemic burden. Its primary component belongs to a drug class used for supportive symptomatic management. The medicine may be applied in contexts involving symptoms related to physical discomfort, systemic imbalance, and those that interfere with daily functioning.

The medication is generally relevant in conditions involving episodic or fluctuating manifestations. It offers supportive relief that helps patients cope more steadily when groups of symptoms cluster into disruptive patterns, helping to ease the overall symptom load.

“It provides support that helps ease the overall symptom burden during periods of heightened discomfort.”

The medicine is applied in contexts marked by increased discomfort or tension. It contributes to improved day-to-day comfort by assisting with the management of symptoms that lead to temporary functional strain.

Quick Fact: Support for Symptom Discomfort
Oflomac-M is applied during phases of increased distress or discomfort, assisting with maintaining functional stability.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Oflomac-M — Official Regulatory Information

The eligibility for Oflomac-M, a combination of Ofloxacin and Metronidazole, is strictly defined by regulatory documents based on the restrictions of both active ingredients. The medicine is generally allowed for use in Adults with appropriate labeled indications.


Contraindicated Populations

Use is absolutely prohibited for specific groups, including those with a known history of hypersensitivity to any fluoroquinolone or nitroimidazole derivative. It is also contraindicated in patients with a history of epilepsy or other seizure disorders, tendon disorders related to previous fluoroquinolone use, or Cockayne syndrome.


Age and Physiological Restrictions

Oflomac-M is not recommended for children and growing adolescents due to the risk of arthropathy. It is contraindicated during pregnancy and for women who are breastfeeding. Older adults require caution due to increased risks such as tendinopathy and potential decline in organ function.


Conditional Use

Patients with severe hepatic impairment or severe renal impairment fall under restricted use and may require close monitoring or dose adjustments, as defined in official prescribing information.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The Oflomac-M interaction profile is strictly defined by regulatory documents, establishing classifications based on its active components, Ofloxacin and Metronidazole.

Formal prohibitions on co-administration are established for several substances. The Metronidazole component is formally prohibited with Disulfiram due to the risk of psychotic reactions, and is contraindicated with alcoholic beverages or propylene glycol products due to the documented disulfiram-like reaction. Abstinence must continue for at least three days after therapy.

The Ofloxacin component requires strict administration timing separation from products containing polyvalent cations to prevent decreased absorption. Substances such as Antacids (aluminum/magnesium) and supplements containing Iron, Calcium, or Zinc must be administered at least 2 hours before or 2 hours after Oflomac-M.

Caution is required due to pharmacodynamic potentiation and exposure modification. Oflomac-M enhances the effects of oral anticoagulants like Warfarin, potentially causing a prolongation of prothrombin time. Co-administration of Ofloxacin with medicines that prolong the QTc interval (e.g., Amiodarone, Pimozide) also increases the risk of QTc prolongation.

Regulatory documents specify population-specific interaction notes for Metronidazole; notably, severe hepatic impairment (Child-Pugh C) leads to significantly higher plasma exposure due to slower removal.

Mechanism of Action

How Oflomac-M Works

The pharmacological action of Oflomac-M is defined by the distinct mechanisms of its two components. The Ofloxacin component acts by targeting and inhibiting two crucial bacterial enzymes, DNA Gyrase and Topoisomerase IV. By locking these enzymes onto the bacterial DNA, Ofloxacin causes the accumulation of irreversible double-strand DNA breaks, which is a lethal (bactericidal) mechanism. This process effectively halts the pathogen's ability to replicate and maintain its genetic structure, resulting in the microbial cell death of susceptible aerobic and facultative bacteria.

Metronidazole utilizes a highly specific mechanism, requiring reductive bioactivation by enzymes found only within obligate anaerobic bacteria and certain protozoa. This process transforms Metronidazole into highly reactive nitroso free radicals that directly attack and fragment the target pathogen's nucleic acids, resulting in microbial cell death. This activation process is constrained by oxygen, limiting the effect to selective destruction of microorganisms within low-oxygen environments.

This combination establishes a mechanistic synergy by simultaneously engaging two non-overlapping pathways of microbial destruction: enzyme inhibition for aerobes and radical-mediated DNA damage for anaerobes/protozoa. This dual-action strategy provides molecular coverage against organisms susceptible to two distinct mechanisms, resulting in the elimination of microbial viability across a broader spectrum of microorganisms.

Dosage and Administration Information

How to Use Oflomac-M

Administration of Oflomac-M, a fixed-dose combination antimicrobial, follows established instructions that define its required usage patterns. The medicine is intended for oral administration and is managed in short, defined courses.

Administration Principle Usage Requirement
Route and Form Must be taken orally as a whole tablet. The tablet must not be broken, crushed, or chewed.
Dosing Frequency The adult schedule is Twice-daily, with doses separated by a 12-hour interval.
Timing with Food Can be administered without regard to meals.
Course Duration The typical duration for the full course of therapy is 5 to 10 days.
Special Condition Co-administration with products containing metal cations (e.g., antacids, iron supplements) must be separated by a minimum of two hours.
Population Adjustment Dose adjustment is required for patients with severe hepatic impairment due to the properties of the component agents.

The usage protocol is structured around consistent adherence to the twice-daily schedule and the completion of the prescribed full course duration. Procedurally, the key constraint is ensuring the two-hour separation from certain mineral-containing products to maintain the medicine’s absorption integrity. This procedural framework guides the execution of the therapy.

Recent Clinical Evidence

Research evidence / Overview of studies for Oflomac-M


Evidence for use in Mixed Gastrointestinal and Diarrheal Infections

Research was studied for this combination in patients experiencing conditions characterized by fluctuating or episodic manifestations linked to both bacterial and protozoal causes. The evidence base is structured around clinical studies cited in local regulatory documentation, alongside in-vitro (laboratory) activity studies. These studies research examined outcomes related to systemic or functional imbalance, such as the time it takes for acute symptoms to resolve, and monitored the microbiological activity against specific types of organisms.

Evidence for use in Genitourinary Tract and Pelvic Infections

Research was evaluated in women experiencing conditions involving periods of heightened symptoms related to the pelvic region, such as Pelvic Inflammatory Disease (PID). The research examined multicenter randomized controlled trials (RCTs) and comparative studies. These studies typically explored the two active components (Ofloxacin plus Metronidazole) used simultaneously. Researchers studies explored outcomes related to physical discomfort (like pain and fever) and monitored bacteriological success rates against target microorganisms. This research provides insight into short-term changes in patient status. However, the results apply only to the populations studied, which were primarily non-pregnant adult women with uncomplicated diagnoses.


Long-Term Studies and Durability of Response

Clinical research for this combination generally focuses on research exploring short-term symptom changes over the course of the antibiotic treatment itself. Studies monitored patient response over defined time intervals that align with acute infection treatment. Follow-up durations were limited to the necessary period for a physician to observe short-term symptom patterns. Consequently, data are still emerging regarding the durability of the response and whether the changes measured during the study period are maintained over extended periods. There is limited information for long-term outcomes such as sustained clearance of organisms or patterns related to the recurrence of symptoms.

What is Still Uncertain About the Fixed-Dose Combination

The primary uncertainty stems from the fact that the Fixed-Dose Combination is not included on certain major international regulatory and public health bodies' essential medicines lists, such as the WHO EML or the US FDA. This is often linked to comparative evidence is lacking from high-quality, large-scale trials that directly compare the FDC to single-agent treatments. The evidence quality varies across studies, and the scientific discussion regarding the fixed dose ratio, rather than adjusting them individually, remains a recognized area of ongoing research and debate. Research provides context but not individual predictions about how this combination compares to others or how an individual patient may respond.

Key Studies & References

  1. Treatment of mild-to-moderate pelvic inflammatory disease with a short-course azithromycin-based regimen versus ofloxacin plus metronidazole: Results of a multicentre, randomised controlled trial
  2. WHO Model List of Essential Medicines (Used to verify absence of FDC)

Frequently Asked Questions (FAQ)

Common questions about Oflomac-M (FAQ)

Q: Does Oflomac-M cause drowsiness or affect alertness?

Official information indicates that common side effects can include dizziness and a feeling of drowsiness (somnolence). The potential for these effects is why warnings are included regarding activities requiring mental alertness, such as driving or operating heavy machinery.

Q: Are there any specific foods or drinks to avoid while taking Oflomac-M?

Yes, official warnings state it is formally prohibited to consume alcohol or products containing propylene glycol (a food additive) during treatment and for several days afterward. Additionally, to ensure the medicine is properly absorbed, the protocol requires that products containing polyvalent cations such as calcium (including dairy products) and iron supplements be administered at least two hours apart from the medication.

Q: Why do some people experience a metallic taste after taking Oflomac-M?

The component Metronidazole is known to cause a sharp, unpleasant metallic taste (dysgeusia), which is listed as a commonly reported adverse reaction. This is generally due to the way the drug and its active metabolites interact with the taste receptors in the mouth.

Q: Does Oflomac-M have any known interaction with dairy products?

Yes. To protect the absorption of the medicine, regulatory information specifies that foods and supplements containing calcium or other polyvalent metal ions, such as dairy products, must have their administration separated from the medication. The required protocol dictates that these products must be administered at least two hours before or two hours after taking the medicine.

Q: How is Oflomac-M different from other similar combination medications?

The distinction lies in its dual active agents: Ofloxacin (a Fluoroquinolone) and Metronidazole (a Nitroimidazole/Antiprotozoal). This combination creates a dual-action strategy covering both aerobic and crucial anaerobic/protozoal infections, differentiating it from single-agent or other combination therapies with alternative drug classes.

Q: Why is Oflomac-M usually prescribed for a specific number of days?

The duration is determined by clinical evidence for treating specific infections. A fixed, short course is prescribed to ensure the complete eradication of the target organisms and is a critical public health measure intended to limit the emergence of antibiotic resistance.

Q: What are the potential signs of an allergic reaction to Oflomac-M?

Regulatory documents list the risk of severe hypersensitivity reactions. Potential signs of a severe reaction may include swelling of the face, lips, or tongue, the appearance of hives (urticaria) or a widespread skin rash, or difficulty breathing or swallowing.

Q: Is Oflomac-M considered generally safe for short-term use?

The combination is approved by regulatory bodies for short-term use, typically 5–10 days. Its risk profile for this duration outlines common adverse reactions (e.g., GI issues, dizziness), as well as known risks of serious, potentially irreversible effects like tendon rupture and peripheral neuropathy.

Q: Why is it important to complete the full course of Oflomac-M?

Completing the full prescribed course duration, typically 5 to 10 days, is required to ensure the complete elimination of the microorganisms causing the infection. Failing to complete the course can lead to the infection re-emerging and may contribute to the development of antibiotic resistance.

Q: How long does it typically take for Oflomac-M to start working?

While the exact molecular action begins immediately, official prescribing information suggests that clinical improvement for many patients is often observed within 2 to 4 days of starting therapy, although this can vary based on the specific infection type and its severity.

Q: What is the general expectation for how long the effects of Oflomac-M last after taking a dose?

The dosing schedule is typically twice daily (every 12 hours), which reflects the elimination half-life of the component agents. The half-life of Metronidazole in healthy humans is approximately eight hours, influencing the need for a twice-daily dosing interval.

Q: Does Oflomac-M interact with common over-the-counter pain relievers?

Official warnings for the Ofloxacin component indicate that combining it with non-steroidal anti-inflammatory drugs (NSAIDs), a common type of pain reliever, may potentially increase the risk of central nervous system excitation, including seizures. This is information that must be communicated to the prescribing healthcare provider, as dosage and risk require clinical assessment.

Q: What should a patient do if they miss a scheduled dose of Oflomac-M?

The official product information contains a protocol for a missed dose. These instructions typically specify that if a dose is missed, one should consult the product information for guidance on whether to take it immediately or skip it, and never to double the dose.

Q: Does Oflomac-M have to be stopped gradually?

No. Official administration instructions emphasize completing the full prescribed course without interruption. There are typically no specific instructions for gradual dose reduction or tapering required when stopping this medicine.

Q: Can the ingredients in Oflomac-M affect the skin's sensitivity to the sun?

Yes. Official warnings indicate that the Ofloxacin component can cause photosensitivity, meaning the skin can react strongly to sunlight. The official warnings advise avoidance of unnecessary or prolonged exposure to sunlight, sunlamps, and tanning beds.

Q: Does Oflomac-M have any impact on blood sugar levels?

Yes. Warnings for the Ofloxacin component indicate a risk of dysglycemia, which is an abnormal fluctuation in blood sugar. This includes both the potential for hypoglycemia (low blood sugar) and hyperglycemia (high blood sugar), particularly in diabetic patients.

Q: Why is Oflomac-M sometimes prescribed for dental infections?

Although not always listed as a primary indication, the medicine's dual action is effective against many types of bacteria and protozoa, including the crucial anaerobic bacteria commonly found in oral abscesses and serious infections. It covers both aerobic (Ofloxacin) and anaerobic (Metronidazole) pathogens commonly implicated in these infections.

Q: Is Oflomac-M known to cause confusion or mood changes?

Yes. The Ofloxacin component carries warnings for various central nervous system (CNS) effects, including confusion and the potential for psychiatric reactions such as depression and psychosis.

Q: Does taking Oflomac-M with food help reduce side effects?

While the medicine can be taken without regard to meals, some regulatory advice suggests that taking the tablet after meals may help to minimize common gastrointestinal side effects like nausea and stomach upset.

Q: How long after finishing the course of Oflomac-M do the effects stay in the body?

The component agents, Metronidazole and Ofloxacin, are generally eliminated from the body within 1 to 2 days following the last dose, with Metronidazole having an average elimination half-life of about eight hours.

Q: Can Oflomac-M interact with herbal supplements?

Regulatory documents list interactions with specific drugs and minerals, but do not provide comprehensive data on herbal supplements. Due to the lack of comprehensive data, this information must be reviewed by the prescribing healthcare provider.

Q: Can Oflomac-M make birth control pills less effective?

Current regulatory evidence and scientific data generally do not show a clinically significant interaction between the component agents (Ofloxacin or Metronidazole) and oral contraceptive pills that would reduce their effectiveness.

Q: Can Oflomac-M affect the results of blood tests?

Yes. Regulatory labeling indicates that the Metronidazole component can cause reversible blood changes, such as neutropenia (low white blood cell count) and thrombocytopenia, which would affect the results of certain blood tests.

How should Oflomac-M be stored and disposed of?

How to Store and Dispose of Oflomac-M

Storage Conditions

Oflomac-M (Ofloxacin and Metronidazole tablets) must be stored at Controlled Room Temperature, which is typically 20 C to 25 C (68 F to 77 F). The medication must be kept in its original container and the lid must remain tightly closed to protect the tablets from moisture and excessive heat. For safety, always store this medicine out of the sight and reach of children.

Disposal Instructions

Unused or expired Oflomac-M must be discarded properly. Disposal must be completed strictly according to local regulations for pharmaceutical waste to prevent environmental contamination and accidental consumption.

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

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