Medicines & Supplements A to Z > Ertapenem


Last updated on 02/07/2021.

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




DRUG CLASS: Antibiotics

SUB CLASS: Carbapenem

USED FOR: Community-acquired pneumonia, skin and soft tissue infections, prevention of surgical infections

– 1 g (injections/infusions)

What is Ertapenem for?

Ertapenem belongs to a class of medications called carbapenem antibiotics. It works by killing bacteria that cause infections and is used to treat various bacterial infections. It does not work for virus or fungus infections.

How to use it?

Kanamycin is injected through a needle into a vein or muscle as directed by your doctor. It is given as 1 g dose once daily or before surgery for adults. For children aged 3 months to 13 years, the dosage is 15 mg per kg body weight twice daily, with a maximum dosage of 1 g per day.
The common treatment length is 10-14 days for infections.

What are the side effects of Ertapenem?

Common side effects of Ertapenem include diarrhoea, headache, nausea and vomiting, thrombophlebitis, and injection site reactions.

Who should not take Ertapenem?

– People allergic to Ertapenem or any component of the formulation.
– People who are allergic to carbapenems.
– People who are allergic to beta-lactams, e.g. Penicillins and Cephalosporins.

Pharmacist Tips:

– Report to your doctor immediately if you experience bloody diarrhoea when you use this medication.
– Drink plenty of water to replace any lost fluids due to diarrhoea.

Common dosing schedule:
Ertapenem should be administered once daily.

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

Some common medications Ertapenem may interact with:
– Anticonvulsants, e.g. Phenobarbital, Phenytoin, Sodium Valproate

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

Where to buy Ertapenem in Hong Kong?

In Hong Kong, Ertapenem 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 Ertapenem 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.