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Prescription requiredSun PharmaAntibiotic

Zanocin DS 400 mg

Ofloxacin 400 mg

Zanocin DS 400 mg is used for treatment of susceptible bacterial infections such as urinary tract infections (UTI), gastrointestinal infections (including infectious diarrhoea), respiratory tract infections, skin and soft tissue infections, and certain genital infections as prescribed.

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

₹295
100% genuine medicinesPharmacist-verified orderDelivered across India

Key details

Salt: Ofloxacin 400 mg
Available variants: 400 mg 10`S
Best price: ₹295
Prescription: Required
Manufacturer: SUN PHARMA 2

Ordering notes

Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy

Composition of Zanocin DS 400 mg

Zanocin DS 400 mg contains Ofloxacin 400 mg. It belongs to the Fluoroquinolone antibiotic class of medicines.

Uses of Zanocin DS 400 mg

  • Treatment of susceptible bacterial infections such as urinary tract infections (UTI)
  • gastrointestinal infections (including infectious diarrhoea)
  • respiratory tract infections
  • skin and soft tissue infections
  • and certain genital infections as prescribed.

Key benefits

  • Treats susceptible bacterial infections
  • Effective in UTIs
  • Useful in infectious diarrhoea/GI infections
  • Helps in certain respiratory and skin infections
  • Broad-spectrum antibacterial action

How Zanocin DS 400 mg works

Ofloxacin is a fluoroquinolone antibiotic that inhibits bacterial DNA gyrase and topoisomerase IV. This blocks DNA replication and repair, leading to bacterial cell death.

How to take Zanocin DS 400 mg

Oral tablet. Take exactly as prescribed by the doctor; commonly taken once or twice daily with water. Can be taken with or without food, but avoid taking with milk/dairy, antacids or iron/calcium/zinc supplements within 2 hours before or after the dose. Complete the full course.

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 the missed dose of Zanocin DS as soon as you remember. If it is almost time for the next dose, skip the missed one and carry on with the usual schedule. Do not take two doses together to make up for a missed dose.

If you take too much

Taking more Zanocin DS than prescribed can be harmful. If you suspect an overdose, contact a doctor or go to the nearest emergency department at once, and carry the pack or strip with you. In India the emergency number is 112.

Side effects of Zanocin DS 400 mg

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

  • Nausea
  • vomiting
  • diarrhoea
  • abdominal pain
  • dizziness
  • headache
  • insomnia
  • rash
  • photosensitivity

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 Zanocin DS 400 mg

PregnancyNot recommended (use only if clearly needed and prescribed by doctor)
AlcoholUse with caution (may increase dizziness; avoid excessive alcohol)
Habit formingNo

Warnings and precautions

Prescription-only antibiotic; use only for bacterial infections. Stop and seek medical help if tendon pain/swelling occurs (risk of tendinitis/rupture), severe diarrhoea occurs (possible C. difficile), allergic reaction, seizures, confusion, or symptoms of peripheral neuropathy (tingling/numbness). Use with caution in elderly, kidney disease (dose adjustment may be needed), epilepsy/CNS disorders, myasthenia gravis, diabetes (risk of hypo/hyperglycaemia), and QT prolongation/heart rhythm disorders. Avoid excessive sunlight; may cause dizziness—use caution while driving.

Interactions with other medicines

Antacids containing magnesium/aluminium, sucralfate, iron/calcium/zinc supplements (reduced absorption), warfarin and other anticoagulants (increased bleeding risk), antiarrhythmics/QT-prolonging drugs (e.g., amiodarone, sotalol, certain antipsychotics/macrolides), corticosteroids (increased tendon rupture risk), NSAIDs (increased CNS stimulation/seizure risk), antidiabetic drugs/insulin (blood sugar changes), theophylline (possible increased levels)

How to store Zanocin DS 400 mg

Store below 25°C in a dry place, protected from light and moisture. Keep out of reach of children.

Manufacturer and class

Manufacturer:
SUN PHARMA 2
Therapeutic class:
Antibiotic
Drug class:
Fluoroquinolone antibiotic

Substitutes for Zanocin DS 400 mg

Medicines with the same active ingredient (Ofloxacin 400 mg). Ask your doctor or pharmacist before switching brands.

MedicinePackPricevs Zanocin DS 400 mg
Zenflox-400MANKIND (PHARMA)10`S₹15548% cheaper
Oflomac 400 TabletMacleods Pharmaceuticals Pvt Ltdtablet · 10 Tablet₹19036% cheaper
Zanocin OD 400 mgSUN PHARMA 25`S₹23919% cheaper
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Zanocin DS 400 mg FAQs

What is Zanocin DS 400 mg used for?
Zanocin DS 400 mg is commonly used for Treatment of susceptible bacterial infections such as urinary tract infections (UTI), gastrointestinal infections (including infectious diarrhoea), respiratory tract infections, skin and soft tissue infections, and certain genital infections as prescribed. 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 Zanocin DS 400 mg?
Zanocin DS 400 mg contains Ofloxacin 400 mg. 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 Zanocin DS 400 mg?
Oral tablet. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Zanocin DS 400 mg work?
Ofloxacin is a fluoroquinolone antibiotic that inhibits bacterial DNA gyrase and topoisomerase IV.
Is Zanocin DS 400 mg a prescription medicine?
Yes. Zanocin DS 400 mg 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 Zanocin DS 400 mg?
The side effects reported most often with Zanocin DS are Nausea, vomiting, diarrhoea, abdominal pain, dizziness. 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 Zanocin DS 400 mg be taken during pregnancy?
Not recommended (use only if clearly needed and prescribed by doctor) Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Zanocin DS.
Can I drink alcohol while taking Zanocin DS 400 mg?
Use with caution (may increase dizziness; avoid excessive alcohol)
What if I miss a dose of Zanocin DS 400 mg?
Take the missed dose of Zanocin DS as soon as you remember. If it is almost time for the next dose, skip the missed one and carry on with the usual schedule. Do not take two doses together to make up for a missed dose.
Is Zanocin DS 400 mg habit forming?
No. Zanocin DS 400 mg is not known to be habit forming when taken as prescribed.
Is there a cheaper substitute for Zanocin DS 400 mg?
Zenflox-400 has the same active ingredient and strength and is listed from ₹155 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 Zanocin DS 400 mg cost on PingMeDoc Pharmacy?
Zanocin DS 400 mg starts at ₹295 on PingMeDoc Pharmacy. Available in 400 mg 10`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Zanocin DS 400 mg?
Zanocin DS 400 mg is manufactured by SUN PHARMA 2. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Zanocin DS 400 mg delivered?
Zanocin DS 400 mg 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.

Zanocin DS 400 mg, Quick facts

Salt
Ofloxacin 400 mg
Best price
₹295
Prescription
Required (Rx)
Schedule
Schedule H
Brand
SUN PHARMA 2
Manufacturer
SUN PHARMA 2
Therapeutic class
Antibiotic
Drug class
Fluoroquinolone antibiotic
Habit forming
No
Variants
400 mg 10`S
Delivery
Standard across India

References

The information on Zanocin DS 400 mg 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. Manufacturer labeling/pack insert, established medical literature on ofloxacin (fluoroquinolones)
  2. Indian drug information references
  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 Zanocin DS 400 mg.
  6. World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.

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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.