Medicines & Supplements A to Z > Ciprofloxacin


Last updated on 19/03/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Ciprofloxacin


BRAND NAME(S) IN HONG KONG: Ciloxan, Ciprol, Ciproxin, Ciproxyl, Microcip

DRUG CLASS:  Fluoroquinolone antibiotic

USED FOR: Urinary tract infections, bacterial eye infections, outer ear infections, pneumonia and other respiratory tract infections, and other bacterial infections

OTHER DRUGS IN THE SAME CLASS: Levofloxacin, Moxifloxacin, Norfloxacin, Ofloxacin, Prulifloxacin

– 250mg, 500mg (tablets)
– 0.3% (eye drops)

What is Ciprofloxacin for?

Ciprofloxacin is an antibiotic used for treating bacterial infections, including but not limited to the following: 

– Bladder infections (urinary tract infections [UTIs])
– Superficial bacterial eye infection
– Acute otitis externa
– Respiratory-tract infections
– Pseudomonal lower respiratory tract infection
– Acute or chronic prostatitis
– Gonorrhoea
– Traveller’s diarrhoea

How to use it?

Usual dosing range


250–750 mg twice daily

For superficial bacterial eye infection

To the eye, using eye drops

Adult / Child
Apply 4 times a day for maximum duration of treatment 21 days

To the eye, using eye ointment

Adult / Child 1-17 years
Apply 1.25 cm 3 times a day for 2 days, then apply 1.25 cm twice daily for 5 days


For superficial bacterial eye infection (severe infection)

To the eye, using eye drops

Adult / Child
Apply every 2 hours during waking hours for 2 days, then apply 4 times a day for a maximum duration of treatment 21 days


For acute otitis externa

To the ear

Adult / Child 1-17 years
Apply 0.25 mL (contains 0.5 mg Ciprofloxacin) twice daily for 7 days

What are the side effects of Ciprofloxacin?

Common side effects of Ciprofloxacin include joint pain, diarrhea, dizziness, and gastrointestinal discomfort. Eye discomfort and eye disorders may also occur associated with the use of eye drops. 

Who should not take Ciprofloxacin?

Anyone who has an allergy to Ciprofloxacin.

Pharmacist Tips:

Do not take Ciprofloxacin alone with milk products. However, this drug can be taken with meals containing milk products. Moreover, if you have to take magnesium or aluminium-containing antacids, take Ciprofloxacin 2 hours before or 6 hours after taking antacids.

Common dosing schedule:
Ciprofloxacin can be taken with or without food.

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Ciprofloxacin (oral) may interact with:
– Calcium
– Oral iron products

This medication may interact with a number of drugs. Notify your doctor/pharmacist if you are taking other medications and discuss with them whether or not you need dose adjustments for the medications.

Where to buy Ciprofloxacin in Hong Kong?

In Hong Kong, Ciprofloxacin is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Ciprofloxacin in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.