Chloramphenicol Eye Drops: Uses, Brands & Dosage

Chloramphenicol is an antibiotic eye medicine used to treat bacterial eye infections like conjunctivitis, blepharitis, and styes.

Drug class	Antibiotic (Amphenicol)
Type	Single
Forms	Eye Drop / Eye Ointment
Common strength	0.5% drop / 1% ointment
Common Indian brands	Chloromycetin, Chlormax (multiple generics)
Prescription status	Prescription

What Chloramphenicol is used for

Chloramphenicol is an anti-infective medicine, specifically an antibiotic, used to treat various bacterial eye conditions. It is very effective and commonly prescribed for:

Bacterial conjunctivitis: This is an infection of the conjunctiva, the clear membrane that covers the white part of your eye and the inside of your eyelids. It often causes redness, itching, and discharge.
Blepharitis: An inflammation of the eyelids, often at the base of the eyelashes, which can be caused by bacterial infection. It can lead to red, itchy, and crusty eyelids.
Stye: A painful, red bump that forms on the edge of the eyelid, often caused by a bacterial infection of an oil gland in the eyelid.

These conditions can be uncomfortable and affect your vision, and chloramphenicol helps to clear the infection.

How it works

Chloramphenicol is a broad-spectrum antibiotic. This means it is effective against a wide range of different types of bacteria. When applied to the eye, it works by stopping these bacteria from growing and multiplying. By halting their growth, it allows your body’s immune system to clear the infection, reducing symptoms and promoting healing.

How it’s used

Chloramphenicol is available as eye drops and eye ointment. Your ophthalmologist will advise you on which form to use and for how long. It is crucial to follow their instructions precisely.

For Eye Drops (0.5% strength): The typical dose is 1 drop applied into the affected eye(s) 4 to 6 times a day.
For Eye Ointment (1% strength): The ointment is usually applied at bedtime. This provides prolonged contact with the eye while you sleep.

Always wash your hands thoroughly before and after applying eye drops or ointment. Avoid touching the tip of the dropper or tube to your eye or any other surface to prevent contamination. If you are using both drops and ointment, your doctor will guide you on the correct order and timing.

Always follow your ophthalmologist’s exact instructions.

Brands available in India

Chloromycetin
Chlormax (multiple generics)

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 chloramphenicol is a very effective and widely used medicine for simple bacterial conjunctivitis and other eye infections, it is important to be aware of certain precautions:

Prescription Medicine: Chloramphenicol is a prescription-only medicine. Always use it only as directed by a qualified ophthalmologist. Do not self-medicate or use an old prescription, even if your symptoms seem similar.
Avoid Prolonged/Repeated Courses: Although rare, there is a risk of bone marrow suppression with prolonged or repeated courses of chloramphenicol, especially when used systemically (taken by mouth or injection). When used as eye drops or ointment, the absorption into the body is minimal, making this risk extremely rare. However, it is still a reason why your doctor will prescribe it for a specific duration and advise against overuse.
Cost-Effective: It is a very cheap and effective option for common bacterial eye infections.
General Hygiene: Always maintain good hand hygiene when handling eye medicines. Avoid sharing eye drops or ointments with others, as this can spread infection.
Consult Your Doctor: If your symptoms do not improve within a few days of starting treatment, or if they worsen, contact your ophthalmologist immediately.

Your ophthalmologist will weigh the benefits and risks and determine if chloramphenicol is the right treatment for your condition.

Understanding Common Eye Infections

Our eyes are delicate and can sometimes get infected by bacteria, leading to uncomfortable conditions. Chloramphenicol is an antibiotic specifically designed to combat these bacterial invaders. Let’s briefly understand some of the common conditions it treats:

Bacterial Conjunctivitis: Often called ‘pink eye’, this is an inflammation of the conjunctiva, the clear membrane covering the white part of your eye and the inside of your eyelids. It’s highly contagious and can cause redness, itching, a gritty feeling, and discharge that might make your eyelids stick together, especially in the morning. It’s important to treat it promptly to prevent it from spreading and to relieve discomfort.

Blepharitis: This condition involves inflammation of the eyelids, often at the base of the eyelashes. It can make your eyelids red, itchy, swollen, and sometimes crusty. Blepharitis can be chronic and may require ongoing management, with antibiotics like chloramphenicol used to treat acute bacterial flare-ups.

Stye: A stye is a painful, red bump that forms on the edge of your eyelid, resembling a pimple. It’s usually caused by a bacterial infection of an oil gland in the eyelid. While often harmless, styes can be quite uncomfortable and sometimes require antibiotic treatment to help them heal.

Recognizing these conditions and seeking timely medical advice from an ophthalmologist is key to effective treatment and preventing complications.

Correctly Using Your Eye Medicine

Using eye drops or ointment correctly is vital for the medicine to work effectively and to prevent further infection or irritation. Here’s a step-by-step guide:

Wash Your Hands: Always start by washing your hands thoroughly with soap and water. This is the most important step to prevent introducing more germs into your eye.
Prepare the Medicine: If using eye drops, shake the bottle gently if instructed. If using ointment, ensure the tube is ready.
Position Yourself: Tilt your head back slightly or lie down. Gently pull down your lower eyelid with one finger to create a small pocket.
Apply the Medicine:
For Eye Drops: Hold the dropper tip directly over your eye, being careful not to touch your eye or eyelashes. Squeeze the bottle gently to release one drop into the pocket you created. Close your eye gently for a minute or two to allow the medicine to spread.
For Eye Ointment: Squeeze a small amount (about a rice grain size) of ointment into the pocket of your lower eyelid. Close your eye gently and roll your eyeball around to help spread the ointment. You might experience temporary blurred vision after applying ointment.
Clean Up: Blot any excess medicine from around your eye with a clean tissue. Do not wipe the tip of the dropper or tube. Replace the cap tightly immediately after use.
Wash Hands Again: Wash your hands again to remove any medicine residue.

If you are using more than one type of eye medicine (e.g., drops and ointment), your doctor will advise you on the correct order and timing. Generally, if using both drops and ointment, drops are applied first, waiting at least 5-10 minutes before applying the ointment.

General Eye Care and When to Seek Help

Maintaining good eye hygiene is crucial, especially when dealing with an infection. Always use clean tissues to wipe your eyes and avoid rubbing them, as this can worsen irritation or spread the infection. Do not share towels, pillowcases, or eye makeup with others, especially when you have an eye infection.

Store your chloramphenicol eye drops or ointment as directed on the packaging, usually in a cool, dry place away from direct sunlight. Always check the expiry date and discard any leftover medicine after your treatment course is complete, or if it has expired. Do not save it for future use.

It is important to remember that this medicine is for bacterial infections. If your eye condition is caused by a virus, allergy, or other factors, chloramphenicol will not be effective. Therefore, a proper diagnosis from an ophthalmologist is essential.

When to contact your ophthalmologist:

If your symptoms do not improve after a few days of using the medicine.
If your symptoms worsen at any point.
If you experience severe eye pain, sudden vision changes, or intense sensitivity to light.
If you develop new or unusual symptoms.

Your doctor is your best resource for managing your eye health. Always follow their advice and never hesitate to reach out if you have concerns.

Frequently asked questions

What is Chloramphenicol used for?

Chloramphenicol is an antibiotic eye medicine used to treat bacterial eye infections such as bacterial conjunctivitis (pink eye), blepharitis (eyelid inflammation), and styes.

How does Chloramphenicol work?

Chloramphenicol is a broad-spectrum antibiotic that works by stopping the growth of various types of bacteria responsible for eye infections. By preventing bacteria from multiplying, it helps your body clear the infection.

What are the common brands of Chloramphenicol in India?

In India, Chloramphenicol is available under brand names like Chloromycetin and Chlormax, as well as multiple generic versions.

How should I use Chloramphenicol eye drops or ointment?

For eye drops (0.5% strength), the typical dose is 1 drop into the affected eye(s) 4 to 6 times a day. For eye ointment (1% strength), it is usually applied at bedtime. Always follow your ophthalmologist's specific instructions for dosing and duration. Remember to wash your hands before and after application and avoid touching the tip of the dropper or tube to your eye.

Do I need a prescription for Chloramphenicol?

Yes, Chloramphenicol is a prescription-only medicine. You should only use it as directed by a qualified ophthalmologist. Do not self-medicate or reuse an old prescription.

Are there any important precautions I should know about Chloramphenicol?

Yes, it is crucial to use Chloramphenicol only as prescribed by your ophthalmologist. Avoid prolonged or repeated courses, as there is a very rare risk of bone marrow suppression, although this risk is extremely low with eye drops/ointment. It is a very effective and cost-effective treatment for simple bacterial conjunctivitis. If your symptoms do not improve or worsen, contact your doctor immediately.

References

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.