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Flunox Injection is an antibiotic used to treat a variety of bacterial infections. It is effective in infections of the throat, ear, nasal sinuses, respiratory tract, skin, and soft tissue, bones and joints, and blood.

Written By Dr. Sakshi Jain, MS, BDS,
Reviewed By Dr. Sachin Gupta, MD Pharmacology, MBBS,
Last updated on 25 Nov 2025 | 03:05 PM (IST)
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Flunox Injection image
Flunox Injection image
Flunox Injection image
Flunox Injection image

Product introduction

Flunox Injection is a penicillin-type of antibiotic, which mainly fights and stops the growth of the gram-positive type of bacteria. It is given as a drip (intravenous infusion) or as an injection directly into a vein or a muscle under the supervision of a healthcare professional.

This medicine should be used regularly at evenly spaced intervals as per the schedule prescribed by your doctor. Do not skip any doses and finish the full course of treatment even if you feel better. Stopping the medicine too early may lead to the infection returning or worsening. The total duration of treatment and precise dosage will be decided by your doctor, depending on the type of infection that you have and how well you respond to the medication. Before taking this medicine, inform your doctor if you are allergic to penicillin or penicillin-type of medicine.

Allergic reactions, injection site reactions like pain, swelling or redness, vomiting, nausea, and diarrhea may be seen as side effects in some patients. These are temporary and usually resolve quickly. Consult your doctor if any of these side effects persist or if your condition worsens. This medicine is generally regarded as safe to use during pregnancy if used under a doctor’s supervision.

Uses of Flunox Injection

Benefits of Flunox Injection

Bacterial infections
Flunox Injection is an antibiotic medicine that works by killing the infection-causing bacteria in your body. It is effective for bacterial infections of the throat, ears, urinary tract, skin, and soft tissues. Flunox Injection is given by a doctor or a nurse and should not be self-administered. This medicine usually makes you feel better within a few days, but you should continue taking it as prescribed even when you feel better. Stopping it early may make the infection come back and harder to treat.

Side effects of Flunox Injection

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Flunox
  • Gastrointestinal disturbance

How to use Flunox Injection

Your doctor or nurse will give you this medicine. Kindly do not self administer.

How Flunox Injection works

Flunox Injection is an antibiotic. It kills bacteria by preventing them from forming their own protective covering (cell wall) which is needed for them to survive. This treats your infection.

Quick tips

  • You have been prescribed Flunox Injection for the treatment of bacterial infections.
  • It is given by an injection into a vein or muscle, or via a drip into a vein.
  • Finish the prescribed course, even if you start to feel better. Stopping it early may make the infection come back and harder to treat.
  • Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it doesn't stop or if you find blood in your stools.
  • Inform your doctor immediately if you develop an itchy rash, swelling of the face, throat or tongue or breathing difficulties while taking this medicine.
  • You have been prescribed Flunox Injection for the treatment of bacterial infections.
  • It is given by an injection into a vein or muscle, or via a drip into a vein.
  • Finish the prescribed course, even if you start to feel better. Stopping it early may make the infection come back and harder to treat.
  • Diarrhea may occur as a side effect but should stop when your course is complete. Inform your doctor if it doesn't stop or if you find blood in your stools.
  • Inform your doctor immediately if you develop an itchy rash, swelling of the face, throat or tongue or breathing difficulties while taking this medicine.

Safety advice

Alcohol

Alcohol

CONSULT YOUR DOCTOR
It is not known whether it is safe to consume alcohol with Flunox Injection. Please consult your doctor.
Pregnancy

Pregnancy

SAFE IF PRESCRIBED
Flunox Injection is generally considered safe to use during pregnancy. Animal studies do not indicate harmful effects. However, there are limited human studies.
Breast feeding

Breast feeding

CAUTION
Flunox Injection should be used with caution during breastfeeding. Breastfeeding should be held until the treatment of the mother is completed and the drug is eliminated from the body.
Driving

Driving

SAFE
Flunox Injection does not usually affect your ability to drive.
Kidney

Kidney

CAUTION
Flunox Injection should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.
Liver

Liver

CAUTION
Flunox Injection should be used with caution in patients with liver disease. Dose adjustment may be needed.

Interaction with drugs

Taking Flunox with any of the following medicines can modify the effect of either of them and cause some undesirable side effects
Severe

Cholera Vaccine (Inactivated) (Oral Route)

Do not consume Cholera Vaccine (Inactivated) two weeks before and at least 10 days after consuming Flucloxacillin Sodium. Please consult your doctor. Flucloxacillin Sodium may reduce the efficacy of Cholera Vaccine (Inactivated).
Severe

Purified Vi Polysaccharide Typhoid Vaccine (Injection Route)

Flucloxacillin Sodium may reduce the efficacy of Purified Vi Polysaccharide Typhoid Vaccine. Flucloxacillin Sodium may reduce the efficacy of Purified Vi Polysaccharide Typhoid Vaccine.
Moderate

Amikacin (Injection Route)

Talk to your doctor if you notice any unusual symptoms.
Moderate

Pemetrexed (Injection Route)

Your doctor may monitor your creatinine clearance along with your overall treatment and adjust the doses as per the observations. Flucloxacillin Sodium may slow down the removal of Pemetrexed from the body.
Moderate

Kanamycin (Injection Route)

Let your doctor know if you have a history of kidney disease. Your doctor may monitor your kidney function regularly.

Frequently asked questions

Although it is rare but yes, Flunox Injection can cause allergic reaction and is harmful in patients with known allergy to penicillins. Get emergency medical help if you have any of the signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Fact Box

Chemical Class

Dipeptides

Habit Forming

No

Therapeutic Class

ANTI INFECTIVES

Action Class

Penicillinase-Resistant Penicillins
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Qualimed Life Sciences
Address: Sr.No 149/A/3,Office No 6,Vijay Sainik Colony,Manjari Bk,Pune -412307

Vendor Details

Country of origin: India
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