Norfloxacin is an antibiotic eye drop used to treat bacterial eye infections like bacterial conjunctivitis.
| Drug class | Antibiotic (Fluoroquinolone) |
|---|---|
| Type | Single |
| Forms | Eye Drop |
| Common strength | 0.3% |
| Common Indian brands | Norflox (eye), Norbactin |
| Prescription status | Prescription |
What Norfloxacin is used for
Norfloxacin is an anti-infective medicine, specifically an antibiotic, used in ophthalmology. It is prescribed to treat certain bacterial infections of the eye.
- Bacterial conjunctivitis
How it works
Norfloxacin belongs to a class of antibiotics called fluoroquinolones. It works by stopping the growth and replication of bacteria that cause eye infections. Specifically, it interferes with the bacteria’s DNA, preventing them from multiplying and spreading, which helps to clear up the infection.
How it’s used
Norfloxacin eye drops are typically prescribed for use in the affected eye(s). The usual dosing involves applying one drop into the affected eye four times a day. It is crucial to follow your ophthalmologist’s specific instructions regarding the frequency and duration of use. Do not stop using the drops even if your symptoms improve, unless advised by your doctor, as stopping early can lead to the infection returning or becoming more difficult to treat.
Always follow your ophthalmologist’s exact instructions.
Brands available in India
- Norflox (eye)
- Norbactin
Brand availability and pricing vary; confirm with your pharmacist.
Good to know
Prescription eye medicine — use only as directed by a qualified ophthalmologist. This page is for general education and is not a substitute for professional medical advice, diagnosis or a prescription. Do not self-medicate or reuse an old prescription.
Precautions & side effects
While Norfloxacin is an effective antibiotic, it’s important to be aware of certain considerations:
- This medicine is a prescription eye medicine. Always use it only as directed by a qualified ophthalmologist.
- This page is for general education and is not a substitute for professional medical advice, diagnosis, or a prescription. Do not self-medicate or reuse an old prescription.
- Norfloxacin is considered an older agent for bacterial conjunctivitis and has largely been superseded by newer fluoroquinolones like moxifloxacin and gatifloxacin.
- It may have weaker coverage against certain types of bacteria, specifically gram-positive bacteria, compared to newer antibiotics.
- If you experience any unusual or severe eye irritation, redness, swelling, or vision changes after using the drops, contact your ophthalmologist immediately.
- Always inform your doctor about any other medications you are taking, including over-the-counter drugs, supplements, and herbal remedies, as well as any allergies you may have.
Understanding Bacterial Conjunctivitis
Bacterial conjunctivitis is a common eye infection that affects the conjunctiva, the clear membrane that covers the white part of your eye and lines the inside of your eyelids. It’s often referred to as ‘pink eye’ because one of its most noticeable symptoms is redness of the eye. This condition occurs when bacteria infect the conjunctiva, leading to inflammation. Symptoms can include redness, itching, a gritty feeling in the eye, discharge (which can be watery, thick, or pus-like), and sometimes crusting around the eyelids, especially in the morning. While it can be uncomfortable and unsightly, bacterial conjunctivitis is usually not serious and typically responds well to antibiotic treatment, such as Norfloxacin eye drops. It’s important to remember that bacterial conjunctivitis is contagious, so good hygiene practices are essential to prevent its spread to others or to your other eye.
Correct Way to Use Eye Drops
Using eye drops correctly is vital for the medicine to work effectively and to prevent contamination. Here’s a step-by-step guide:
- Wash Your Hands: Always start by thoroughly washing your hands with soap and water. This is crucial to prevent introducing germs into your eye.
- Prepare the Drop: Gently shake the bottle if instructed by your doctor or pharmacist. Remove the cap, being careful not to touch the tip of the dropper.
- Position Yourself: Tilt your head back or lie down. With the index finger of one hand, gently pull down your lower eyelid to create a small pocket.
- Administer the Drop: Hold the dropper bottle upside down with your other hand, positioning it directly over your eye. Avoid touching your eye or eyelid with the tip of the dropper to prevent contamination. Look upwards and squeeze the bottle gently to release one drop into the pocket you created.
- Close Your Eye: Gently close your eye for a minute or two. Avoid blinking or squeezing your eye shut tightly, as this can push the medicine out. You can also gently press your finger to the inner corner of your eye (near your nose) for a minute to help keep the medicine in your eye.
- Clean Up: Replace the cap on the bottle. Wash your hands again to remove any medicine that may have gotten on them.
If you are using more than one type of eye drop, wait at least 5-10 minutes between different medications to allow each drop to be absorbed properly.
General Eye Care, Hygiene, and When to Seek Help
Maintaining good eye hygiene is paramount, especially when dealing with an eye infection. Always wash your hands before and after touching your eyes or applying eye drops. Avoid sharing towels, pillowcases, or eye makeup with others, as this can spread the infection. If you wear contact lenses, you must remove them before applying eye drops and refrain from wearing them until your infection has completely cleared, and your doctor advises it is safe to resume. Always use a fresh, sterile pair of lenses when you do restart. Store your eye drops as directed on the packaging, usually at room temperature, and keep them out of reach of children. Do not use eye drops beyond their expiry date or for longer than prescribed, even if the bottle isn’t empty. Once opened, eye drop bottles have a limited shelf life, typically 28 days, after which they should be discarded to prevent contamination.
While Norfloxacin is generally effective, it’s important to know when to seek further medical attention. If your symptoms do not improve within a few days of starting the medication, or if they worsen, contact your ophthalmologist immediately. Also, seek urgent medical advice if you experience severe eye pain, sudden changes in vision, extreme sensitivity to light, or if you develop a fever or other systemic symptoms. These could indicate a more serious condition that requires different treatment. Remember, your ophthalmologist is your best resource for personalized advice and care regarding your eye health.
Frequently asked questions
What is Norfloxacin used for?
Norfloxacin is an antibiotic eye drop used to treat bacterial eye infections, specifically bacterial conjunctivitis.
How does Norfloxacin work?
Norfloxacin works by stopping the growth and replication of bacteria that cause eye infections. It interferes with the bacteria's DNA, preventing them from multiplying.
What are the common Indian brands of Norfloxacin eye drops?
Some common Indian brands for Norfloxacin eye drops include Norflox (eye) and Norbactin.
How should I use Norfloxacin eye drops?
Typically, you should apply one drop into the affected eye four times a day. Always follow your ophthalmologist's specific instructions for dosing and duration.
Do I need a prescription for Norfloxacin eye drops?
Yes, Norfloxacin is a prescription medicine and should only be used as directed by a qualified ophthalmologist.
What precautions should I take while using Norfloxacin?
Use only as directed by your ophthalmologist. Do not self-medicate or reuse old prescriptions. Norfloxacin is an older antibiotic and has been largely superseded by newer agents like moxifloxacin or gatifloxacin, and it may have weaker coverage against certain bacteria. If you experience severe irritation or worsening symptoms, contact your doctor immediately.
References
- Pink Eye (Conjunctivitis) – American Academy of Ophthalmology
- Conjunctivitis – MedlinePlus
- Learn about eye health – National Eye Institute (NIH)
- Blindness and vision impairment – World Health Organization
- StatPearls – NCBI Bookshelf
Medically reviewed by Dr. C Jagadesh Reddy, Chief Surgeon: Cornea, Cataract and Refractive Surgery — last reviewed 2026-07-28.
This page is for general education only and is not a substitute for professional medical advice, diagnosis or treatment. Never self-medicate or reuse an old prescription. Always consult a qualified ophthalmologist before starting, changing or stopping any eye medicine.