Oflogard O 200mg/500mg Tablet

Oflogard O 200mg/500mg Tablet is a prescription dual-action antimicrobial combination of Ofloxacin and Ornidazole, formulated to address infections involving both aerobic and anaerobic microorganisms.

Ofloxacin belongs to the fluoroquinolone class of antibiotics. It exerts its bactericidal effect by inhibiting two essential bacterial enzymes (DNA gyrase and topoisomerase IV) which are responsible for the supercoiling and relaxation of bacterial DNA during replication and repair. By blocking these enzymes, Ofloxacin prevents bacterial DNA from replicating and transcribing correctly, leading to bacterial cell death. It demonstrates strong activity against a wide range of gram-negative and several gram-positive organisms, including those responsible for gastrointestinal, urinary, and respiratory infections.

Ornidazole belongs to the nitroimidazole class of antimicrobials. Once inside the cell, it is reduced to reactive intermediates that damage the DNA of anaerobic bacteria and protozoa, rendering them unable to replicate or survive. Ornidazole is active against anaerobic bacteria such as Bacteroides and Clostridium species, as well as protozoan parasites including Entamoeba histolytica, Giardia lamblia, and Trichomonas vaginalis. It is well tolerated and achieves good tissue penetration, making it effective at infection sites including the gut, liver, and genital tract.

This combination is particularly valuable when mixed infections are suspected or confirmed. Both components are well absorbed orally, achieve therapeutic concentrations across multiple tissue compartments, are metabolized primarily in the liver, and are eliminated through the kidneys and bile.

As with all antimicrobial treatments, Oflogard O 200mg/500mg Tablet should be taken for the full prescribed duration, even if symptoms resolve early, to ensure complete eradication of the infection and to reduce the risk of treatment failure or resistance.

Gastrointestinal Infections

Acute infectious diarrhoea, dysentery, and gastroenteritis caused by mixed bacterial and protozoal pathogens including Escherichia coli, Shigella species, and Giardia lamblia.

Gynaecological Infections

Pelvic inflammatory disease (PID) and other mixed aerobic and anaerobic infections of the female reproductive tract including endometritis and salpingitis.

Protozoal Infections

Amoebiasis (Entamoeba histolytica), giardiasis (Giardia lamblia), and trichomoniasis (Trichomonas vaginalis).

Urinary Tract Infections (UTIs)

Uncomplicated and complicated bacterial infections of the bladder and kidneys caused by susceptible aerobic gram-negative organisms.

Intra-abdominal and Soft Tissue Infections

Peritonitis and mixed aerobic and anaerobic infections of the skin, subcutaneous tissue, and wounds caused by susceptible organisms.

• Dual-Spectrum Antimicrobial Coverage: Oflogard O 200mg/500mg Tablet combines the broad-spectrum aerobic antibacterial activity of Ofloxacin with the anaerobic and antiprotozoal potency of Ornidazole, providing comprehensive treatment in a single formulation.

• Effective Against Mixed Infections: Oflogard O 200mg/500mg Tablet is highly valuable when infections involve both aerobic bacteria and anaerobes or protozoa simultaneously, reducing the need for multiple separate medicines.

• Strong Tissue Penetration: Oflogard O 200mg/500mg Tablet achieves good concentrations across multiple tissues including the gut, liver, genital tract, and urinary system, ensuring effective action at the site of infection.

• Oral Administration: Oflogard O 200mg/500mg Tablet is available in oral form, allowing effective treatment in outpatient settings without requiring hospitalisation in most cases.

• Supports Complete Recovery: By targeting the full spectrum of causative organisms in polymicrobial infections, Oflogard O 200mg/500mg Tablet helps reduce the risk of treatment failure, complications, and recurrence.

Oflogard O 200mg/500mg Tablet may cause side effects, although not everyone will experience them. Most reactions are mild and temporary, but some can be more serious and require medical attention.

More Common Side Effects

• Nausea or stomach discomfort

• Diarrhea or loose stools

• Headache

• Dizziness or light-headedness

• Dry mouth or altered taste sensation

Less Common Side Effects

• Vomiting

• Loss of appetite

• Mild skin rash or itching

• Fatigue or tiredness

• Mild and transient changes in liver enzyme levels (usually detected on routine blood tests)

• Tingling or numbness in the hands or feet (peripheral neuropathy, more likely with prolonged use)

Serious Side Effects (Seek Medical Help Immediately)

• Severe allergic reactions: swelling of the face, lips, tongue, or throat; hives; difficulty breathing (anaphylaxis)

• Tendon pain, swelling, or rupture (Achilles tendon is a known but uncommon risk with fluoroquinolone antibiotics)

• Severe neurological effects: seizures, confusion, hallucinations, or agitation

• Severe or persistent diarrhea, which may be watery or bloody, potentially indicating Clostridioides difficile-associated colitis

• Signs of liver injury: yellowing of the skin or eyes, dark-coloured urine, or upper abdominal pain

• Irregular heartbeat or palpitations (QT prolongation, rare)

• Severe skin reactions such as Stevens-Johnson syndrome (very rare): painful blistering, skin peeling, or widespread sores

Oflogard O 200mg/500mg Tablet should be taken exactly as directed by your doctor. Taking each dose at the start of a meal is recommended, as food reduces the risk of nausea and gastric irritation from both active ingredients without significantly affecting their absorption.

Take doses at evenly spaced intervals to maintain consistent drug levels in the body. Avoid taking Oflogard O 200mg/500mg Tablet within two hours of antacids containing aluminium or magnesium, or iron and zinc supplements, as these significantly reduce Ofloxacin absorption. Always complete the full prescribed course, even if symptoms resolve earlier.

Ofloxacin works by inhibiting two critical enzymes in bacteria — DNA gyrase and topoisomerase IV. These enzymes are essential for unwinding, replicating, and repairing bacterial DNA. When Ofloxacin blocks these enzymes, the bacterium's DNA becomes fragmented and unable to replicate, ultimately causing bacterial cell death. This action is bactericidal, meaning it actively kills bacteria rather than merely slowing their growth.

Ornidazole is activated within the cells of anaerobic organisms and parasites through a process of enzymatic reduction. This reduction generates reactive nitrogen-based intermediates that bind to and disrupt the DNA of anaerobic bacteria and protozoa, preventing them from reproducing and leading to their destruction. Because this activation occurs specifically in anaerobic and low-oxygen environments, Ornidazole acts selectively against anaerobic pathogens without significantly affecting normal aerobic cells.

Together, this dual mechanism ensures that both the aerobic bacterial and anaerobic or protozoal components of a mixed infection are targeted simultaneously, resulting in more thorough and reliable clinical outcomes.

• Complete the Full Course: Always finish the entire prescribed treatment course, even if symptoms improve early. Stopping prematurely increases the risk of treatment failure and contributes to antimicrobial resistance.

• Take with Food: Taking Oflogard O 200mg/500mg Tablet with food helps reduce gastrointestinal discomfort and improves tolerability, particularly regarding nausea associated with Ornidazole.

• Strictly Avoid Alcohol: Unlike some antibiotics where moderate caution is advised, alcohol must be completely avoided during treatment with Ornidazole and for at least 48 hours after the course ends, due to the risk of a severe disulfiram-like reaction.

• Avoid Antacids and Mineral Supplements Around Dosing Time: Antacids, iron, calcium, zinc, and magnesium-containing products can impair the absorption of Ofloxacin. Maintain a gap of at least two hours if these are also required.

• Protect Your Tendons: Fluoroquinolones carry a known (though uncommon) risk of tendon injury, particularly in older adults and those on corticosteroids. If you experience any sudden joint, muscle, or tendon pain, stop the medicine and consult your doctor immediately.

• Sun Protection: Ofloxacin can increase skin sensitivity to sunlight (photosensitivity). Avoid prolonged sun exposure, use sunscreen, and wear protective clothing while on this treatment.

• Monitor for Neurological Symptoms: Any unusual changes in mood, confusion, tingling, or numbness should be reported to your healthcare provider promptly.

• Alcohol (Severe): Causes a serious disulfiram-like reaction with Ornidazole. Must be completely avoided during treatment and for at least 48 hours after the final dose.

• Antacids Containing Aluminium or Magnesium (Severe): Chelate Ofloxacin in the gastrointestinal tract, substantially reducing its absorption. Take at least two hours apart from Oflogard O 200mg/500mg Tablet.

• Iron and Zinc Supplements (Severe): Similarly chelate Ofloxacin and impair its absorption. A minimum two-hour separation is required.

• Caffeine (Mild): Ofloxacin may reduce hepatic caffeine metabolism, intensifying stimulant effects such as insomnia and palpitations. Limiting excessive caffeine intake is advisable.

• QT-Prolonging Medicines (Severe): Concurrent use with antiarrhythmics such as amiodarone, antipsychotics such as haloperidol, antimalarials such as chloroquine, or macrolides such as azithromycin significantly increases the risk of serious ventricular arrhythmias. Co-administration should be avoided.

• Warfarin and Oral Anticoagulants (Moderate): Both components may enhance the anticoagulant effect of warfarin through suppression of gut flora vitamin K synthesis and inhibition of warfarin metabolism. INR monitoring is essential during concurrent use.

• Corticosteroids (Moderate): Combined use with fluoroquinolones significantly increases the risk of tendinitis and tendon rupture, particularly in older patients.

• Theophylline (Moderate): Ofloxacin inhibits hepatic theophylline metabolism, raising plasma levels and increasing the risk of toxicity including palpitations and seizures. Theophylline levels should be monitored.

• NSAIDs (Moderate): Concurrent use may increase central nervous system stimulation and lower the seizure threshold. Caution is warranted in patients with seizure disorders.

• Antidiabetic Agents including Insulin (Moderate): Fluoroquinolones can cause both hypoglycaemia and hyperglycaemia. Blood glucose monitoring is recommended in diabetic patients during treatment.

• Antacids and Mineral Supplements (Severe): Chelate Ofloxacin and significantly reduce its absorption. A minimum two-hour dosing separation is required.

• History of Tendon Disorders (Severe): Fluoroquinolones carry a well-established risk of tendinitis and tendon rupture. Patients over 60 years of age, those on corticosteroids, and organ transplant recipients are at substantially elevated risk.

• QT Prolongation or Cardiac Arrhythmias (Severe): Ofloxacin prolongs the cardiac QT interval. Patients with pre-existing QT prolongation, electrolyte imbalances, or cardiac arrhythmias are at risk of serious ventricular arrhythmias. Specialist review is recommended before use.

• Epilepsy or Seizure Disorders (High): Fluoroquinolones lower the seizure threshold by antagonising GABA receptors. Patients with a history of seizures require careful clinical assessment before use.

• Significant Hepatic Impairment (Moderate): Ornidazole accumulates in patients with reduced hepatic function, increasing the risk of neurological side effects. Dose adjustment and monitoring are warranted.

• Significant Renal Impairment (High): Reduced renal clearance of Ofloxacin leads to drug accumulation and dose-dependent toxicity. Dose reduction is mandatory.

• History of Antibiotic-Associated Colitis (Moderate): Fluoroquinolones disrupt the colonic microbiome and increase the risk of Clostridioides difficile infection. Use with caution and close monitoring in patients with a prior history.

If you miss a dose, take it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Never take two doses at the same time to make up for a missed one, as this does not improve treatment effectiveness and may increase the risk of side effects.

Maintaining consistent antibiotic blood levels throughout the course is important for effective treatment. Try to take each dose at the same time each day to establish a reliable routine. If you are frequently missing doses or are uncertain about how to continue, contact your healthcare provider promptly for guidance.