> Western Medicines > Cefaclor


Used for: Skin and soft tissue infections, Respiratory tract infections, Acute otitis media, Urinary tract infections (UTIs), Bronchitis, Pneumonia
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What is Cefaclor for?

Cefaclor belongs to a class of medications called cephalosporin antibiotics. It kills bacteria by interrupting the integrity of bacterial cell walls. It is used to treat bacterial infections, including pneumonia and other respiratory tract infections, and skin and soft tissue infections. Cefaclor does not work for virus or fungus infections.

How to use it?

Cefaclor is available as a tablet, a capsule and an oral suspension to be taken with or without food. If you take an oral suspension, shake the bottle well before use to mix the medication evenly.


Acute otitis media
250-500 mg every 8-12 hours. Maximum dosage is 4 g daily.

40 mg/kg body weight daily in 3 divided doses. Maximum dosage is 1 g daily.


Skin and soft tissue infections
250-500 mg every 8 hours.

20-40 mg/kg body weight daily in 3 divided doses. Maximum dosage is 1 g daily.


Lower respiratory tract infection
250-500 mg every 8 hours.

20-40 mg/kg body weight daily in 3 divided doses. Maximum dosage is 1 g daily.

What are the side effects of Cefaclor?

Common side effects of Cefaclor include abdominal pain, diarrhoea, dizziness, headache, nausea and vomiting, and allergic skin reactions.

Who should not take Cefaclor?

  • People who are allergic to Cefaclor or any component of the formulation.
  • Anyone who is allergic to cephalosporins.

Pharmacist Tips:

  • Report severe diarrhoea and ask your doctor or pharmacist before taking antidiarrheal medicines.
  • Drink plenty of water to replace any lost fluids due to diarrhoea.
  • If you experience symptoms like skin rash or enlarged lymph nodes, report to your doctor immediately.

Common dosing schedule:
Cefaclor is usually administered every 8 hours. You can take Cefaclor with or without food.


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


Some common medications Cefaclor may interact with:

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Cefaclor in Hong Kong?

In Hong Kong, Cefaclor 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 https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Cefaclor 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.

Brands in Hong Kong
Available dosage
  • 250mg / 500mg (Capsules)
  • 125mg/5mL / 250mg/5mL / (Oral Suspension)
  • 375mg (Tablets)
Drug class
Sub class
Cephalosporins (Second Generation)
Other drugs in same class
Used for: Urinary tract infections (UTIs), Bacterial skin infection, Gonorrhea, Acute bacterial exacerbation of chronic bronchitis (ABECB), Bacterial otitis media
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Used for: Urinary tract infections (UTIs), Ear infections, Inflammation of the kidney
Chinese name: