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Prescription requiredStadmed (p) LtdAntibiotic

Entrozyme O Tablet

Ofloxacin (200mg) + Ornidazole (500mg)

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Same composition, in stock now. Check with your doctor or pharmacist before you switch.

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Entrozyme O Tablet is used for entrozyme-O 200mg/500mg Tablet is used in the treatment of bacterial & parasitic infections. It is used to treat gastrointestinal infections such as acute diarrhea or dysentery, gynecological infections, lung infections, and urinary infections.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026

Licensed pharmacyPharmacist-verified order

Key details

Salt: Ofloxacin (200mg) + Ornidazole (500mg)
Available variants: tablet 200mg + 500mg 10`S
Best price: ₹127 (₹12.73 per tablet)
MRP: ₹134
Prescription: Required
Manufacturer: STADMED (P) LTD

Ordering notes

Delivery details are shown when the medicine is back in stock.
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy

Same salt, lower price

Medicines with the same active ingredient and strength as Entrozyme O Tablet.

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Entrozyme O Tablet

tablet - 200mg + 500mg - 10 S

₹127

₹12.73 per tablet

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Compare all substitutes
Same salt, different brand — what does that mean?

A substitute contains the same active ingredient (salt), in the same strength, as Entrozyme O Tablet. The medicine inside is the same — the brand name, manufacturer and price are what differ.

All medicines sold in India, branded or generic, must meet the quality standards set by the national drug regulator (CDSCO). A lower price does not mean lower quality.

Please confirm with your doctor or pharmacist before switching brands — they will check that the strength and form match your prescription.

Composition of Entrozyme O Tablet

Entrozyme O Tablet contains Ofloxacin (200mg) + Ornidazole (500mg). It belongs to the Fluoroquinolone and Antibacterial agent class of medicines.

Uses of Entrozyme O Tablet

  • Entrozyme-O 200mg/500mg Tablet is used in the treatment of bacterial & parasitic infections. It is used to treat gastrointestinal infections such as acute diarrhea or dysentery
  • gynecological infections
  • lung infections
  • and urinary infections.

Key benefits

  • Effective against a wide range of bacteria
  • Well absorbed when taken by mouth
  • Targets infections that other antibiotic groups do not reach

How Entrozyme O Tablet works

Entrozyme-O 200mg/500mg Tablet is a combination of two antibiotics: Ofloxacin and Ornidazole. Ofloxacin works by preventing the bacterial cells from dividing and repairing, thereby killing the bacteria. Ornidazole kills parasites and anaerobic bacteria that cause infections by damaging their DNA. Together, they treat your infection effectively.

How to take Entrozyme O Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Entrozyme-O 200mg/500mg Tablet is to be taken with food.<br>Taking it empty stomach can cause stomach upset.

Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.

Missed dose and overdose

If you miss a dose

Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.

If you take too much

An overdose of this medicine can cause kidney injury, fits and heart rhythm disturbance. It can cause vomiting, severe loose motions and nerve symptoms. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Entrozyme O Tablet

Most side effects of Entrozyme O are mild and settle as the body adjusts. Reported side effects include:

  • Nausea Loss of appetite Dizziness Headache

Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.

Safety advice for Entrozyme O Tablet

PregnancyEntrozyme-O 200mg/500mg Tablet may be unsafe to use during pregnancy.<br>Animal studies have shown adverse effects on the foetus, however, there are limited human studies. The benefits from use in pregnant women may be acceptable despite the risk. Please consult your doctor.
BreastfeedingNo information is available on the use of Entrozyme-O 200mg/500mg Tablet during lactation. Please consult your doctor.
AlcoholEntrozyme-O 200mg/500mg Tablet may cause symptoms such as flushing, increased heartbeat, nausea, thirst, chest pain and low blood pressure with alcohol (Disulfiram reactions).
DrivingMay cause drowsiness or affect your concentration. Do not drive until you know how it affects you.
KidneyEntrozyme-O 200mg/500mg Tablet is probably safe to use in patients with kidney disease. Limited data available suggests that dose adjustment of Entrozyme-O 200mg/500mg Tablet may not be needed in these patients. Please consult your doctor.
LiverEntrozyme-O 200mg/500mg Tablet should be used with caution in patients with liver disease. Dose adjustment of Entrozyme-O 200mg/500mg Tablet may be needed. Please consult your doctor.
Habit formingNo

Warnings and precautions

Stop and contact your doctor at once if you develop pain, swelling or tenderness in a tendon — the Achilles tendon at the back of the ankle in particular. This group can damage tendons, and the risk is higher in older people and with steroids. Report any new numbness, tingling or burning in the hands or feet promptly. Tell your doctor about any change in mood, confusion or agitation. Avoid strong sunlight and use sun protection — this group makes the skin burn more easily. Finish the whole course; this group is heavily associated with antibiotic resistance and should be used only when prescribed. Finish the whole course even after you feel better. Do not drink any alcohol while taking metronidazole, ornidazole or tinidazole, or for the period after the course that your doctor states — the combination causes severe flushing, vomiting and a racing heart. Report severe or watery loose motions during or after the course rather than treating them yourself. Tetracyclines stain developing teeth and are avoided in young children and in pregnancy. Antibiotics do not work against colds, flu or most sore throats, which are caused by viruses.

Do not take Entrozyme O if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Generally avoided in children and adolescents, in pregnancy, and in anyone with a history of tendon problems with these antibiotics.

Interactions with other medicines

Antacids, iron, zinc, calcium and milk markedly reduce absorption — separate them by at least two hours. Tell your doctor if you take steroids, a blood thinner or a medicine for heart rhythm. Antacids, iron, zinc and calcium reduce the absorption of tetracyclines — separate them by a couple of hours. Tell your doctor if you take a blood thinner.

How to store Entrozyme O Tablet

Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.

Expert advice for Entrozyme O Tablet

<div class="style__desktop-container___1hcBT"><div class="style__desktop-video___2GTR9"><div class="styles__video-img___1rCzR"><div class=""/><div class=""/></div></div><div><div><div><div><div class="ExpertAdviceItem__content___1Djk2"><ul><li>Your doctor has prescribed this combination medicine for the treatment of diarrhea and dysentery.</li> <li>Diarrhea can cause dehydration. Drink plenty of fluids to help rehydrate you. </li> <li>Consult your doctor if your diarrhea lasts for more than 48 hours.</li> <li>Do not use Entrozyme O Tablet if you have blood in your stool or if you are severely constipated.</li> <li>It may cause dizziness and sleepiness. Do not drive or do anything that requires mental focus until you know how it affects you.</li> <li>Avoid consuming alcohol when taking Entrozyme O Tablet as it may irritate your stomach and also cause excessive drowsiness.</li> <li>Notify your doctor if you feel pain in your tendons, numbness, or tingling sensations.</li> <li>Inform your doctor if you are pregnant or planning to conceive or breastfeeding.</li></ul></div></div></div></div></div></div>

Manufacturer and class

Manufacturer:
STADMED (P) LTD
Therapeutic class:
Antibiotic
Drug class:
Fluoroquinolone and Antibacterial agent

Substitutes for Entrozyme O Tablet

Medicines with the same active ingredient (Ofloxacin (200mg) + Ornidazole (500mg)). Ask your doctor or pharmacist before switching brands.

MedicinePackPricevs Entrozyme O Tablet
Norilet OzDr Reddys Laboratories Ltd10`S₹8731% cheaper
Ofzo TabletCOMED CHEMICALS`tablet · 10`s₹9724% cheaper
Eldeflox Oz Tablet10'S₹10022% cheaper
Floxant-Oz TabletCELTIC PHARMAtablet · 10`S₹10716% cheaper
Bactezoa TabletSTEDMAN PHARMACEUTICALS(P)LTDtablet · 10`S₹10815% cheaper
Ofloren Oz Tablet1X10₹1215% cheaper
Onoff Oz Tablet1X10₹127same price
Oflonir Oz Tablet [Blister]1X10₹1388% more
Oflokem Oz Novo Tablet1X10₹14917% more
Zil-O TabletAbbott Healthcare Pvt Ltdtablet · 10`S₹18344% more
SarilRALLIS INDIA LTD`10`S₹19352% more
Zanocin Oz TabletSUN PHARMA 2tablet · 10`S₹19553% more
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Entrozyme O Tablet FAQs

What is Entrozyme O Tablet used for?
Entrozyme O Tablet is commonly used for Entrozyme-O 200mg/500mg Tablet is used in the treatment of bacterial & parasitic infections. It is used to treat gastrointestinal infections such as acute diarrhea or dysentery, gynecological infections, lung infections, and urinary infections. Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Entrozyme O Tablet?
Entrozyme O Tablet contains Ofloxacin (200mg) + Ornidazole (500mg). If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Entrozyme O Tablet?
Take this medicine in the dose and duration as advised by your doctor. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Entrozyme O Tablet work?
Entrozyme-O 200mg/500mg Tablet is a combination of two antibiotics: Ofloxacin and Ornidazole.
Is Entrozyme O Tablet a prescription medicine?
Yes. Entrozyme O Tablet is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Entrozyme O Tablet?
The side effects reported most often with Entrozyme O are Nausea Loss of appetite Dizziness Headache. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Entrozyme O Tablet be taken during pregnancy?
Entrozyme-O 200mg/500mg Tablet may be unsafe to use during pregnancy.<br>Animal studies have shown adverse effects on the foetus, however, there are limited human studies. Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Entrozyme O.
Can I drink alcohol while taking Entrozyme O Tablet?
Entrozyme-O 200mg/500mg Tablet may cause symptoms such as flushing, increased heartbeat, nausea, thirst, chest pain and low blood pressure with alcohol (Disulfiram reactions).
What if I miss a dose of Entrozyme O Tablet?
Take it as soon as you remember.
Is Entrozyme O Tablet habit forming?
No. Entrozyme O Tablet is not known to be habit forming when taken as prescribed.
Is there a cheaper substitute for Entrozyme O Tablet?
Norilet Oz has the same active ingredient and strength and is listed from ₹87 on PingMeDoc Pharmacy. Ask your doctor or pharmacist before switching brands, the salt is the same, but excipients and release profiles can differ.
How much does Entrozyme O Tablet cost on PingMeDoc Pharmacy?
Entrozyme O Tablet starts at ₹127 (MRP ₹134) on PingMeDoc Pharmacy. Available in tablet 200mg + 500mg 10`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Entrozyme O Tablet?
Entrozyme O Tablet is manufactured by STADMED (P) LTD. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Entrozyme O Tablet delivered?
Entrozyme O Tablet is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.

Entrozyme O Tablet, Quick facts

Salt
Ofloxacin (200mg) + Ornidazole (500mg)
Form
tablet
Best price
₹127 (₹12.73 per tablet)
MRP
₹134
Prescription
Required (Rx)
Schedule
Schedule H
Brand
STADMED (P) LTD
Manufacturer
STADMED (P) LTD
Therapeutic class
Antibiotic
Drug class
Fluoroquinolone and Antibacterial agent
Habit forming
No
Variants
tablet 200mg + 500mg 10`S
Delivery
Standard across India

References

The information on Entrozyme O Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.

  1. PingMeDoc clinical monograph library — compiled from Indian package inserts, the Indian Pharmacopoeia
  2. CDSCO schedules and standard pharmacology references. Reviewed for patient readability. This is general information, not a substitute for your doctor's advice.
  3. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  4. National List of Essential Medicines (NLEM) 2022, Government of India.
  5. Manufacturer's package insert / prescribing information for Entrozyme O Tablet.
  6. World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.

Next steps

Safety disclaimer

Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.