Co‑amoxiclav (Amoxicillin and Clavulanic Acid) — Uses, Dosage, Side Effects & Safety

Drug class: Antibiotic (Penicillin/Beta-lactamase inhibitor combination)

Overview

Co‑amoxiclav is a combination antibiotic used to treat a wide range of bacterial infections, including respiratory tract infections, urinary tract infections, skin infections, and dental infections. It contains two active ingredients: amoxicillin, a penicillin-type antibiotic that kills bacteria, and clavulanic acid, which helps prevent certain bacteria from becoming resistant to amoxicillin. This medicine works by stopping the growth of bacteria and overcoming resistance mechanisms that would otherwise make amoxicillin less effective. Co‑amoxiclav is not effective against viral infections such as the common cold or flu. Key points for patients: Always take the full course as prescribed, even if you feel better. Stopping early can lead to the infection returning and increase the risk of antibiotic resistance. If you develop severe diarrhea, rash, or signs of an allergic reaction, seek medical attention immediately.

Therapeutic uses

• Bacterial infections
• Respiratory infections
• Skin infections

For related Co‑amoxiclav guidance, compare Augmentin (amoxicillin/clavulanate), Sultamicillin and Amoxicillin in Australia.

Common side effects

• Diarrhea
• Nausea
• Vomiting
• Rash
• Hives
• C. difficile-associated diarrhea
• Anaphylaxis

Frequently Asked Questions about Co‑amoxiclav

What infections does Co‑amoxiclav treat?

Co‑amoxiclav is used to treat bacterial infections such as sinusitis, pneumonia, bronchitis, urinary tract infections, skin infections, and dental infections.

Can I take Co‑amoxiclav if I am allergic to penicillin?

No. Do not take Co‑amoxiclav if you have a known allergy to penicillins or cephalosporins, as serious allergic reactions may occur.

Should I take Co‑amoxiclav with food?

Yes, it is best taken at the start of a meal to reduce stomach upset and improve absorption.

What should I do if I develop diarrhea while taking Co‑amoxiclav?

Mild diarrhea is common, but if you develop severe, persistent, or bloody diarrhea, contact your doctor immediately as this may indicate a serious condition.

Is Co‑amoxiclav safe during pregnancy or breastfeeding?

Co‑amoxiclav is generally considered safe in pregnancy and breastfeeding when prescribed by a doctor, but always consult your healthcare provider before use.

Can Co‑amoxiclav affect birth control pills?

Co‑amoxiclav may reduce the effectiveness of oral contraceptives. Use additional contraception while taking this antibiotic.

How should I store Co‑amoxiclav oral suspension?

Store the oral suspension in the refrigerator and discard any unused portion after 7-10 days. Do not freeze.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.